Science.gov

Sample records for delaware basin class

  1. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin), Class III

    SciTech Connect

    Dutton, Shirley P.; Flanders, William A.; Mendez, Daniel L.

    2001-05-08

    The objective of this Class 3 project was demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstone's of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover oil more economically through geologically based field development. This project was focused on East Ford field, a Delaware Mountain Group field that produced from the upper Bell Canyon Formation (Ramsey sandstone). The field, discovered in 9160, is operated by Oral Petco, Inc., as the East Ford unit. A CO2 flood was being conducted in the unit, and this flood is the Phase 2 demonstration for the project.

  2. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin), Class III

    SciTech Connect

    Dutton, Shirley P.; Flanders, William A.

    2001-11-04

    The objective of this Class III project was demonstrate that reservoir characterization and enhanced oil recovery (EOR) by CO2 flood can increase production from slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico. Phase 1 of the project, reservoir characterization, focused on Geraldine Ford and East Ford fields, which are Delaware Mountain Group fields that produce from the upper Bell Canyon Formation (Ramsey sandstone). The demonstration phase of the project was a CO2 flood conducted in East Ford field, which is operated by Orla Petco, Inc., as the East Ford unit.

  3. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin), Class III

    SciTech Connect

    Dutton, Shirley P.; Flanders, William A.; Zirczy, Helena H.

    2000-05-24

    The objective of this Class 3 project was to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Phase 1 of the project, reservoir characterization, was completed this year, and Phase 2 began. The project is focused on East Ford field, a representative Delaware Mountain Group field that produces from the upper Bell Canyon Formation (Ramsey sandstone). The field, discovered in 1960, is operated by Oral Petco, Inc., as the East Ford unit. A CO{sub 2} flood is being conducted in the unit, and this flood is the Phase 2 demonstration for the project.

  4. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2001-09-28

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. EPA requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard and must consider inadvertent drilling into the repository at some future time.

  5. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services

    1999-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  6. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2000-09-28

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  7. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2002-09-21

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  8. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2005-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  9. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2004-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  10. Delaware Basin Monitoring Annual Report

    SciTech Connect

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2003-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  11. Selected streamflow data for the Delaware River basin

    USGS Publications Warehouse

    Schopp, Robert D.; Gillespie, Brian D.

    1979-01-01

    Selected streamflow data for the Delaware River basin include runoff-precipitation relationships for 28 selected subbasins for the period 1941-70; low-flow frequency curves for four mainstem Delaware River sites; monthly comparative duration curves and twenty year hydrographs at Montague and Trenton, New Jersey; and flow duration tables based on observed daily streamflow for gaging stations near 21 proposed dam sites. (Woodard-USGS)

  12. Flood peaks and discharge summaries in the Delaware River basin

    USGS Publications Warehouse

    Vickers, A.A.; Farsett, Harry A.; Green, J. Wayne

    1981-01-01

    This report contains streamflow data from 299 continuous and partial-record gaging stations in the Delaware River basin. The location, drainage area, period of record, type of gage, and average flow (discharge) is given for each continuous station. Also included, are annual flood peak discharges and discharges above a selected base, annual and monthly mean discharges, and annual and monthly runoff. (USGS)

  13. The Delaware River Basin Landsat-Data Collection System Experiment

    NASA Technical Reports Server (NTRS)

    Paulson, R. W. (Principal Investigator)

    1975-01-01

    The author has identified the following significant results. This experiment successfully demonstrated that standard U.S. Geological Survey field instrumentation could be easily interfaced with the LANDSAT-DCS and the data made to flow smoothly to water resources management agencies. The experiment was conducted in the Delaware River basin. A truly operational system could not be deployed.

  14. Hydrologic effects of climate change in the Delaware River basin

    USGS Publications Warehouse

    McCabe, Gregory J.; Ayers, Mark A.

    1989-01-01

    The Thornthwaite water balance and combinations of temperature and precipitation changes representing climate change were used to estimate changes in seasonal soil-moisture and runoff in the Delaware River basin. Winter warming may cause a greater proportion of precipitation in the northern part of the basin to fall as rain, which may increase winter runoff and decrease spring and summer runoff. Estimates of total annual runoff indicate that a 5 percent increase in precipitation would be needed to counteract runoff decreases resulting from a warming of 2??C; a 15 percent increase for a warming of 4??C. A warming of 2?? to 4??C, without precipitation increases, may cause a 9 to 25 percent decrease in runoff. The general circulation model derived changes in annual runoff ranged from -39 to +9 percent. Results generally agree with those obtained in studies elsewhere. The changes in runoff agree in direction but differ in magnitude. Additional aspects of the subject are discussed.

  15. Forward stratigraphic modeling of the Permian of the Delaware Basin

    SciTech Connect

    Qiucheng, Ye; Kerans, C.; Bowman, S.

    1996-12-31

    Permian platform-to-basin strata of the Delaware Basin In west Texas and New Mexico represent one of the world`s most complete, best studied, and most hydrocarbon productive records of this geologic period in the world. This superb marriage of a refined stratigraphic framework and active exploration provided impetus to develop a forward stratigraphic model of this section to better predict the distribution of reservoir and seal relationships. The approximately 30 m.y. interval modeled is composed of 2 km of platform strata and 3 km of basinal strata divided into 8 composite sequences (average 3 m.y. duration) and 45 high-frequency sequences (400 ky m.y. duration). A 130 km dip section through the basin margin Guadalupe/Deleware Mountain outcrop is inversely modeled to derive local tectonic subsidence and a sea level curve for the Permian. In this process, the highest and lowest shoreline positions of each sequence are interpreted based on facies description which are assumed to approximate the highest and lowest relative sea level. A eustatic sea level curve is calculated by restoring these shoreline positions and removing local tectonic subsidence using a polynomial fit to the derived relative sea level curve. The quantitatively constrained curve for the Permian contains 2nd, 3rd, and 4th order 180m. This quantitatively constrained accommodation history (calculated eustatic curve and subsidence history) are input into the PHIL forward modeling program. Model variables of sediment supply are depositional system are adjusted to match known outcrop relations. The resulting model is potentially capable of predicting stratigraphy elsewhere in the basin using only subsidence history data from the inverse model.

  16. Forward stratigraphic modeling of the Permian of the Delaware Basin

    SciTech Connect

    Qiucheng, Ye; Kerans, C.; Bowman, S. )

    1996-01-01

    Permian platform-to-basin strata of the Delaware Basin In west Texas and New Mexico represent one of the world's most complete, best studied, and most hydrocarbon productive records of this geologic period in the world. This superb marriage of a refined stratigraphic framework and active exploration provided impetus to develop a forward stratigraphic model of this section to better predict the distribution of reservoir and seal relationships. The approximately 30 m.y. interval modeled is composed of 2 km of platform strata and 3 km of basinal strata divided into 8 composite sequences (average 3 m.y. duration) and 45 high-frequency sequences (400 ky m.y. duration). A 130 km dip section through the basin margin Guadalupe/Deleware Mountain outcrop is inversely modeled to derive local tectonic subsidence and a sea level curve for the Permian. In this process, the highest and lowest shoreline positions of each sequence are interpreted based on facies description which are assumed to approximate the highest and lowest relative sea level. A eustatic sea level curve is calculated by restoring these shoreline positions and removing local tectonic subsidence using a polynomial fit to the derived relative sea level curve. The quantitatively constrained curve for the Permian contains 2nd, 3rd, and 4th order 180m. This quantitatively constrained accommodation history (calculated eustatic curve and subsidence history) are input into the PHIL forward modeling program. Model variables of sediment supply are depositional system are adjusted to match known outcrop relations. The resulting model is potentially capable of predicting stratigraphy elsewhere in the basin using only subsidence history data from the inverse model.

  17. Characterization of a Delaware slope basin reservoir for optimal development

    SciTech Connect

    Weiss, W.W.; Ouenes, A.; Sultan, A.J.

    1995-12-31

    A reliable reservoir description is essential to various scenarios for successful field development. In this study, various new tools have been applied to fully characterize the East Livingston Ridge Delaware reservoir. The Delaware formations in their slope/basin environment are difficult to characterize due to the channels in the submarine fans. Using well logs, a complex 3-D reservoir model composed of a channel through the bottom three layers of a seven layer model with one non-oil bearing zone was constructed to represent this complex depositional setting. Drastic changes in layer lithologies resulting in multiple oil/water contacts and varying water saturations required detailed log interpretation. The porosity logs were tuned with available sidewall core information. Log porosity was determined for each layer at each well and kriging was used to estimate the areal distribution of the porosity. Porosity-permeability correlations for each layer were developed from sidewall core data. The correlations were used to make an initial estimate of the interwell permeabilities. A production history match was not possible with the initial characterization of the reservoir. The production rates of the oil, gas, and water phases of each of the twenty-three wells in the East Livingston Ridge field and the pressure data were automatically history matched using a recently developed simulated annealing technique. The absolute and relative permeabilities of the layers were varied automatically during the history matching phase of the reservoir study. The larger scale properties resulting from the calibrated model were used to forecast the results of continued primary, infill drilling and/or waterflooding.

  18. Delaware basin/Central basin platform margin: The development of a subthrust deep-gas province in the Permian Basin

    SciTech Connect

    Purves, W.J. ); Ting, S.C. )

    1990-05-01

    A deep-gas-prone province was identified along the Delaware basin/Central Basin platform margin, a margin conventionally interpreted to be bounded by high-angle normal or high-angle reverse structures. Redefinition of the tectonic style between the Delaware basin and the adjacent platform resulted in the identification of this Delaware basin/Central Basin platform subthrust province and a giant prospect within it. Definition of a giant-sized gas prospect in northern Pecos County, Texas, revealed that portions of this margin may be characterized by shingled, low-angle, eastward-dipping, basement involved thrust faults. Interpretations suggest that hidden, subthrust footwall structures may trend discontinuously for greater than 100 mi along this structural margin. Subthrust footwall structures formed as basinal buttress points for the Central Basin platform to climb over the Delaware basin. In this area, structural relief of over 19,000 ft over a 10-mi width is believed due to stacking of low-angle thrust sheets. Seismic resolution of this subthrust margin has been complexed by allochtonous hanging-wall gravity-glide blocks and folds and by velocity changes in overlying syn- and posttectonic sediments associated with basin-to-shelf lithofacies changes. Statistical studies indicate that this deep-gas province has a play potential of greater than 10 tcf of gas, with individual prospect sizes exceeding 1 tcfg. The prospects defined along this trend are deep (approximately 20,000 ft) subthrust structural traps that are indigenously sourced and reservoired by dual-matrix porosity. Vitrinite supported maturation modeling suggests that these subthrust structures formed prior to catagenic conversion of the oldest source rocks to oil and later to gas. Tectonically fractured Ordovician Ellenburger and Devonian sediments are considered the principal reservoirs. Shales overlying reservoir intervals form vertical seals.

  19. A checklist of the aquatic invertebrates of the Delaware River Basin, 1990-2000

    USGS Publications Warehouse

    Bilger, Michael D.; Riva-Murray, Karen; Wall, Gretchen L.

    2005-01-01

    This paper details a compilation of aquatic-invertebrate taxa collected at 1,080 sites as part of 13 surface-water-quality studies completed by selected Federal, state, and local environmental agencies during 1990-2000, within the 32,893-km2 area of the Delaware River Basin. This checklist is intended to be a 'working list' of aquatic invertebrates that can be applied successfully to the calculation and interpretation of various biological estimators to determine the status of water quality and can be used as a foundation to document the current state of biodiversity. It is not intended as a comprehensive historical inventory of the literature or of private and public holdings. A total of 11 phyla comprising 20 classes, 46 orders, 196 families, 685 genera, and 835 species were recorded.

  20. Water quality trends in the Delaware River Basin (USA) from 1980 to 2005.

    PubMed

    Kauffman, Gerald J; Homsey, Andrew R; Belden, Andrew C; Sanchez, Jessica Rittler

    2011-06-01

    In 1940, the tidal Delaware River was "one of the most grossly polluted areas in the United States." During the 1950s, water quality was so poor along the river at Philadelphia that zero oxygen levels prevented migration of American shad leading to near extirpation of the species. Since then, water quality in the Delaware Basin has improved with implementation of the 1961 Delaware River Basin Compact and 1970s Federal Clean Water Act Amendments. At 15 gages along the Delaware River and major tributaries between 1980 and 2005, water quality for dissolved oxygen, phosphorus, nitrogen, and sediment improved at 39%, remained constant at 51%, and degraded at 10% of the stations. Since 1980, improved water-quality stations outnumbered degraded stations by a 4 to 1 margin. Water quality remains good in the nontidal river above Trenton and, while improved, remains fair to poor for phosphorus and nitrogen in the tidal estuary near Philadelphia and in the Lehigh and Schuylkill tributaries. Water quality is good in heavily forested watersheds (>50%) and poor in highly cultivated watersheds. Water quality recovery in the Delaware Basin is coincident with implementation of environmental laws enacted in the 1960s and 1970s and is congruent with return of striped bass, shad, blue crab, and bald eagle populations. PMID:20665109

  1. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin)

    SciTech Connect

    Dutton, S.P.; Flanders, W.A.; Guzman, J.I.; Zirczy, H.

    1999-06-08

    The objective of this Class III project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost-effective way to recover a higher percentage of the original oil in place through geologically based field development. This year the project focused on reservoir characterization of the East Ford unit, a representative Delaware Mountain Group field that produces from the upper Bell Canyon Formation (Ramsey Sandstone). The field, discovered in 1960, is operated by Orla Petco, Inc., as the East Ford unit; it contained an estimated 19.8 million barrels (MMbbl) of original oil in place. Petrophysical characterization of the East Ford unit was accomplished by integrating core and log data and quantifying petrophysical properties from wireline logs. Most methods of petrophysical analysis that had been developed during an earlier study of the Ford Geraldine unit were successfully transferred to the East Ford unit. The approach that was used to interpret water saturation from resistivity logs, however, had to be modified because in some East Ford wells the log-calculated water saturation was too high and inconsistent with observations made during the actual production. Log-porosity to core-porosity transforms and core-porosity to core-permeability transforms were derived from the East Ford reservoir. The petrophysical data were used to map porosity, permeability, net pay, water saturation, mobil-oil saturation, and other reservoir properties.

  2. Reservoir Operations and Flow Modeling to Support Decision Making in the Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Quinodoz, H. A.

    2006-12-01

    About five percent of the US population depends on the waters from the Delaware River Basin for its water supply, including New York City and Philadelphia. Water management in the basin is governed by a compact signed in 1961 by the four basin states and the federal government. The compact created the Delaware River Basin Commission (DRBC) and gave it broad powers to plan, regulate, and manage the development of the basin water resources. The compact also recognized a pre-existing (1954) U.S. Supreme Court Decree that grants the City of New York the right to export up to 800 million gallons per day out of the basin, provided that a prescribed minimum flow is met at Montague, New Jersey for the use of the lower-basin states. The Delaware River Basin Compact also allows the DRBC to adjust the releases and diversions under the Decree, subject to the unanimous consent of the decree parties. This mechanism has been used several times over the last 30 years, to implement and modify rules governing drought operations, instream flows, minimum flow targets, and control of salinity intrusion. In every case, decision makers have relied upon extensive modeling of alternative proposals, using a basin-wide daily flow model. Often, stakeholders have modified and used the same model to test and refine their proposals prior to consideration by the decision makers. The flow model has been modified over the years, to simulate new features and processes in a river system partially controlled by more than ten reservoirs. The flow model has proved to be an adaptable tool, able to simulate the dynamics of a complex system driven by conflicting objectives. This presentation reviews the characteristics of the daily flow model in its current form, discuss how model simulations are used to inform the decision-making process, and provide a case study of a recent modification of the system-wide drought operating plan.

  3. Permian Bone Spring formation: Sandstone play in the Delaware basin. Part I - slope

    SciTech Connect

    Montgomery, S.L.

    1997-08-01

    New exploration in the Permian (Leonardian) Bone Spring formation has indicated regional potential in several sandstone sections across portions of the northern Delaware basin. Significant production has been established in the first, second, and third Bone Spring sandstones, as well as in a new reservoir interval, the Avalon sandstone, above the first Bone Spring sandstone. These sandstones were deposited as submarine-fan systems within the northern Delaware basin during periods of lowered sea level. The Bone Spring as a whole consists of alternating carbonate and siliciclastic intervals representing the downdip equivalents to thick Abo-Yeso/Wichita-Clear Fork carbonate buildups along the Leonardian shelf margin. Hydrocarbon exploration in the Bone Spring has traditionally focused on debris-flow carbonate deposits restricted to the paleoslope. Submarine-fan systems, in contrast, extend a considerable distance basinward of these deposits and have been recently proven productive as much as 40-48 km south of the carbonate trend.

  4. Preliminary analysis of ERTS-relayed water resources data in the Delaware River Basin

    NASA Technical Reports Server (NTRS)

    Paulson, R. W.

    1973-01-01

    Preliminary analysis of ERTS-DCS data from water-resources stations in the Delaware River Basin indicates that the Data-Collection System is performing well. Data-Collections Platforms have been successfully interfaced with five stream-gaging station and three ground-water observation wells and are being interfaced with 12 water-quality monitors in the basin. Data are being relayed during four or five ERTS orbital passes per day, which is within the design specifications of the ERTS-DCS.

  5. Estimation of daily mean streamflow for ungaged stream locations in the Delaware River Basin, water years 1960–2010

    USGS Publications Warehouse

    Stuckey, Marla H.

    2016-01-01

    The ability to characterize baseline streamflow conditions, compare them with current conditions, and assess effects of human activities on streamflow is fundamental to water-management programs addressing water allocation, human-health issues, recreation needs, and establishment of ecological flow criteria. The U.S. Geological Survey, through the National Water Census, has developed the Delaware River Basin Streamflow Estimator Tool (DRB-SET) to estimate baseline (minimally altered) and altered (affected by regulation, diversion, mining, or other anthropogenic activities) and altered streamflow at a daily time step for ungaged stream locations in the Delaware River Basin for water years 1960–2010. Daily mean baseline streamflow is estimated by using the QPPQ method to equate streamflow expressed as a percentile from the flow-duration curve (FDC) for a particular day at an ungaged stream location with the percentile from a FDC for the same day at a hydrologically similar gaged location where streamflow is measured. Parameter-based regression equations were developed for 22 exceedance probabilities from the FDC for ungaged stream locations in the Delaware River Basin. Water use data from 2010 is used to adjust the baseline daily mean streamflow generated from the QPPQ method at ungaged stream locations in the Delaware River Basin to reflect current, or altered, conditions. To evaluate the effectiveness of the overall QPPQ method contained within DRB-SET, a comparison of observed and estimated daily mean streamflows was performed for 109 reference streamgages in and near the Delaware River Basin. The Nash-Sutcliffe efficiency (NSE) values were computed as a measure of goodness of fit. The NSE values (using log10 streamflow values) ranged from 0.22 to 0.98 (median of 0.90) for 45 streamgages in the Upper Delaware River Basin and from -0.37 to 0.98 (median of 0.79) for 41 streamgages in the Lower Delaware River Basin.

  6. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin)

    SciTech Connect

    Andrew G. Cole; George B. Asquith; Jose I. Guzman; Mark D. Barton; Mohammad A. Malik; Shirley P. Dutton; Sigrid J. Clift

    1998-04-01

    The objective of this Class III project is to demonstrate that detailed reservoir characterization of clastic reservoirs in basinal sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost-effective way to recover more of the original oil in place by strategic infill-well placement and geologically based enhanced oil recovery. The study focused on the Ford Geraldine unit, which produces from the upper Bell Canyon Formation (Ramsey sandstone). Reservoirs in this and other Delaware Mountain Group fields have low producibility (average recovery <14 percent of the original oil in place) because of a high degree of vertical and lateral heterogeneity caused by depositional processes and post-depositional diagenetic modification. Outcrop analogs were studied to better interpret the depositional processes that formed the reservoirs at the Ford Geraldine unit and to determine the dimensions of reservoir sandstone bodies. Facies relationships and bedding architecture within a single genetic unit exposed in outcrop in Culberson County, Texas, suggest that the sandstones were deposited in a system of channels and levees with attached lobes that initially prograded basinward, aggraded, and then turned around and stepped back toward the shelf. Channel sandstones are 10 to 60 ft thick and 300 to 3,000 ft wide. The flanking levees have a wedge-shaped geometry and are composed of interbedded sandstone and siltstone; thickness varies from 3 to 20 ft and length from several hundred to several thousands of feet. The lobe sandstones are broad lens-shaped bodies; thicknesses range up to 30 ft with aspect ratios (width/thickness) of 100 to 10,000. Lobe sandstones may be interstratified with laminated siltstones.

  7. 33 CFR 165.556 - Regulated Navigation Area; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... areas, found in 33 CFR 165.13, apply to the regulated navigation area described in paragraph (a) of this...; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD. 165.556 Section 165.556 Navigation and..., Chesapeake City Anchorage Basin, MD. (a) Location. The following area is a regulated navigation area:...

  8. 33 CFR 165.556 - Regulated Navigation Area; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... areas, found in 33 CFR 165.13, apply to the regulated navigation area described in paragraph (a) of this...; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD. 165.556 Section 165.556 Navigation and..., Chesapeake City Anchorage Basin, MD. (a) Location. The following area is a regulated navigation area:...

  9. 33 CFR 165.556 - Regulated Navigation Area; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... areas, found in 33 CFR 165.13, apply to the regulated navigation area described in paragraph (a) of this...; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD. 165.556 Section 165.556 Navigation and..., Chesapeake City Anchorage Basin, MD. (a) Location. The following area is a regulated navigation area:...

  10. 33 CFR 165.556 - Regulated Navigation Area; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... areas, found in 33 CFR 165.13, apply to the regulated navigation area described in paragraph (a) of this...; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD. 165.556 Section 165.556 Navigation and..., Chesapeake City Anchorage Basin, MD. (a) Location. The following area is a regulated navigation area:...

  11. 33 CFR 165.556 - Regulated Navigation Area; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... areas, found in 33 CFR 165.13, apply to the regulated navigation area described in paragraph (a) of this...; Chesapeake and Delaware Canal, Chesapeake City Anchorage Basin, MD. 165.556 Section 165.556 Navigation and..., Chesapeake City Anchorage Basin, MD. (a) Location. The following area is a regulated navigation area:...

  12. Dynamic Management of Releases for the Delaware River Basin using NYC's Operations Support Tool

    NASA Astrophysics Data System (ADS)

    Weiss, W.; Wang, L.; Murphy, T.; Muralidhar, D.; Tarrier, B.

    2011-12-01

    The New York City Department of Environmental Protection (DEP) has initiated design of an Operations Support Tool (OST), a state-of-the-art decision support system to provide computational and predictive support for water supply operations and planning. Using an interim version of OST, DEP and the New York State Department of Environmental Conservation (DEC) have developed a provisional, one-year Delaware River Basin reservoir release program to succeed the existing Flexible Flow Management Program (FFMP) which expired on May 31, 2011. The FFMP grew out of the Good Faith Agreement of 1983 among the four Basin states (New York, New Jersey, Pennsylvania, and Delaware) that established modified diversions and flow targets during drought conditions. It provided a set of release schedules as a framework for managing diversions and releases from New York City's Delaware Basin reservoirs in order to support multiple objectives, including water supply, drought mitigation, flood mitigation, tailwaters fisheries, main stem habitat, recreation, and salinity repulsion. The provisional program (OST-FFMP) defines available water based on current Upper Delaware reservoir conditions and probabilistic forecasts of reservoir inflow. Releases are then set based on a set of release schedules keyed to the water availability. Additionally, OST-FFMP attempts to provide enhanced downstream flood protection by making spill mitigation releases to keep the Delaware System reservoirs at a seasonally varying conditional storage objective. The OST-FFMP approach represents a more robust way of managing downstream releases, accounting for predicted future hydrologic conditions by making more water available for release when conditions are forecasted to be wet and protecting water supply reliability when conditions are forecasted to be dry. Further, the dynamic nature of the program allows the release decision to be adjusted as hydrologic conditions change. OST simulations predict that this

  13. The Role of Remotely Sensed and Relayed Data in the Delaware River Basin

    NASA Technical Reports Server (NTRS)

    Paulson, R. W.

    1971-01-01

    The planned integration of the existing water quality monitoring and data processing systems in the Delaware River Basin with a data relay experiment proposed for the ERTS-1 is discussed. The experiment is designed to use ERTS-1 as a data relay link for a maximum of 20 hydrologic stations in the basin, including stream gaging, reservoir level, ground water level, and water quality monitoring stations. This experiment has the potential for reducing the time lag between data collection and dissemination to less than 12 hours. The experiment will also provide impetus to develop an operational system of real time data processing and dissemination to handle the large quantity of data that will be obtained from the stations in the basin. The results of this experiment will demonstrate the relative merits of satellite relay of data versus conventional means of data telemetry and will provide a basis for the development of operational satellite relay of hydrologic data.

  14. User’s guide for the Delaware River Basin Streamflow Estimator Tool (DRB-SET)

    USGS Publications Warehouse

    Stuckey, Marla H.; Ulrich, James E.

    2016-01-01

    IntroductionThe Delaware River Basin Streamflow Estimator Tool (DRB-SET) is a tool for the simulation of streamflow at a daily time step for an ungaged stream location in the Delaware River Basin. DRB-SET was developed by the U.S. Geological Survey (USGS) and funded through WaterSMART as part of the National Water Census, a USGS research program on national water availability and use that develops new water accounting tools and assesses water availability at the regional and national scales. DRB-SET relates probability exceedances at a gaged location to those at an ungaged stream location. Once the ungaged stream location has been identified by the user, an appropriate streamgage is automatically selected in DRB-SET using streamflow correlation (map correlation method). Alternately, the user can manually select a different streamgage or use the closest streamgage. A report file is generated documenting the reference streamgage and ungaged stream location information, basin characteristics, any warnings, baseline (minimally altered) and altered (affected by regulation, diversion, mining, or other anthropogenic activities) daily mean streamflow, and the mean and median streamflow. The estimated daily flows for the ungaged stream location can be easily exported as a text file that can be used as input into a statistical software package to determine additional streamflow statistics, such as flow duration exceedance or streamflow frequency statistics.

  15. Holocene depocenter migration and sediment accumulation in Delaware Bay: a submerging marginal marine sedimentary basin

    USGS Publications Warehouse

    Fletcher, C. H., III; Knebel, H. J.; Kraft, J.C.

    1992-01-01

    The Holocene transgression of the Delaware Bay estuary and adjacent Atlantic coast results from the combined effect of regional crustal subsidence and eustasy. Together, the estuary and ocean coast constitute a small sedimentary basin whose principal depocenter has migrated with the transgression. A millenial time series of isopach and paleogeographic reconstructions for the migrating depocenter outlines the basin-wide pattern of sediment distribution and accumulation. Upland sediments entering the basin through the estuarine turbidity maximum accumulate in tidal wetland or open water sedimentary environments. Wind-wave activity at the edge of the tidal wetlands erodes the aggraded Holocene section and builds migrating washover barriers. Along the Atlantic and estuary coasts of Delaware, the area of the upland environment decreases from 2.0 billion m2 to 730 million m2 during the transgression. The area of the tidal wetland environment increases from 140 million to 270 million m2, and due to the widening of the estuary the area of open water increases from 190 million to 1.21 billion m2. Gross uncorrected rates of sediment accumulation for the tidal wetlands decrease from 0.64 mm/yr at 6 ka to 0.48 mm/yr at 1 ka. In the open water environments uncorrected rates decrease from 0.50 mm/yr to 0.04 mm/yr over the same period. We also present data on total sediment volumes within the tidal wetland and open water environments at specific intervals during the Holocene. ?? 1992.

  16. Flood of June 26-29, 2006, Mohawk, Delaware, and Susquehanna River Basins, New York

    USGS Publications Warehouse

    Suro, Thomas P.; Firda, Gary D.; Szabo, Carolyn O.

    2009-01-01

    A stalled frontal system caused tropical moisture to be funneled northward into New York, causing severe flooding in the Mohawk, Delaware, and Susquehanna River basins during June 26-29, 2006. Rainfall totals for this multi-day event ranged from 2 to 3 inches to greater than 13 inches in southern New York. The storm and flooding claimed four lives in New York, destroyed or damaged thousands of homes and businesses, and closed hundreds of roads and highways. Thousands of people evacuated their homes as floodwaters reached new record elevations at many locations within the three basins. Twelve New York counties were declared Federal disaster areas, more than 15,500 residents applied for disaster assistance, and millions of dollars in damages resulted from the flooding. Disaster-recovery assistance for individuals and businesses adversely affected by the floods of June 2006 reached more than $227 million. The National Weather Service rainfall station at Slide Mountain recorded storm totals of more than 8 inches of rainfall, and the stations at Walton and Fishs Eddy, NY, recorded storm totals of greater than 13 inches of rainfall. The U.S. Geological Survey (USGS) stream-gaging stations at Mohawk River at Little Falls, West Branch Delaware River at Hale Eddy, and Susquehanna River at Vestal, NY, among others, recorded peak discharges of 35,000 ft3/s, 43,400 ft3/s, and 119,000 ft3/s respectively, with greater than 100-year recurrence intervals. The peak water-surface elevation 21.47 ft and the peak discharge 189,000 ft3/s recorded on June 28, 2006, at the Delaware River at Port Jervis stream-gaging station were the highest recorded since the flood of August 1955. At the Susquehanna River at Conklin, NY, stream-gaging station, which has been in operation since 1912, the peak water-surface elevation 25.02 ft and peak discharge 76,800 ft3/s recorded on June 28, 2006, exceeded the previous period-of-record maximums that were set during the flood of March 1936. Documented

  17. Spatial Characterization of Flood Magnitudes from Hurricane Irene (2011) over Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Lu, P.; Smith, J. A.; Cunha, L.; Lin, N.

    2014-12-01

    Flooding from landfalling tropical cyclones can affect drainage networks over a large range of basin scales. We develop a method to characterize the spatial distribution of flood magnitudes continuously over a drainage network, with focus on flooding from landfalling tropical cyclones. We use hydrologic modeling to translate precipitation fields into a continuous representation of flood peaks over the drainage network. The CUENCAS model (Cunha 2012) is chosen because of its ability to predict flooding over various scales with minimal calibration. Taking advantage of scaling properties of flood magnitudes, a dimensionless flood index (Smith 1989, Villarini and Smith 2010) is obtained for a better representation of flood magnitudes for which the effects of basin scales are reduced. Case study analyses from Hurricane Irene are carried for the Delaware River using Stage IV radar rainfall fields. Reservoir regulation is implemented in CUENCAS since the Delaware River, like many large rivers, is strongly regulated. With limited info of dam operation and initial water level, reservoirs are represented as filters that directly reduce streamflow downstream, as a trade-off between efficiency and accuracy. Results show a correlation coefficient greater than 0.9 for all the available flood peak observations. Uncertainties are mostly from errors in rainfall fields for small watersheds, and reservoir regulation for large ones. The hydrological modeling can also be driven by simulated rainfall from historical or synthetic storms: this study fits into our long-term goal of developing a methodology to quantify the risk of inland flooding associated with landfalling tropical cyclone.

  18. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, west Texas (Delaware Basin). Annual progress report, March 31, 1995--March 31, 1996

    SciTech Connect

    Dutton, S.P.; Hovorka, S.D.; Cole, A.G.

    1996-08-01

    The objective of this Class III project is to demonstrate that detailed reservoir characterization of clastic reservoirs in basinal sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost-effective way to recover more of the original oil in place by strategic infill-well placement and geologically based field development. Reservoirs in the Delaware Mountain Group have low producibility (average recovery <14 percent of the original oil in place) because of a high degree of vertical and lateral heterogeneity caused by depositional processes and post-depositional diagenetic modification. Detailed correlations of the Ramsey sandstone reservoirs in Geraldine Ford field suggest that lateral sandstone continuity is less than interpreted by previous studies. The degree of lateral heterogeneity in the reservoir sandstones suggests that they were deposited by eolian-derived turbidites. According to the eolian-derived turbidite model, sand dunes migrated across the exposed shelf to the shelf break during sea-level lowstands and provided well sorted sand for turbidity currents or grain flows into the deep basin.

  19. Sequence stratigraphy of the Pennsylvanian Morrow Formation, northern Delaware basin, New Mexico

    SciTech Connect

    Bay, A.R.; Baltensperger, P.A. )

    1990-05-01

    Stratigraphic sequence analysis of the Pennsylvanian Morrow Formation is a new technique useful in predicting and understanding shifts in sand trends that can help locate Morrow gas reservoirs in the mature northern Delaware basin. Morrow sandstone reservoirs are fluvial deltaic channel fill and transgressive beach deposits that typically are 10-30 ft thick and consistently less than 1 mi wide. Detailed mapping and correlation within the systems tracts of each sequence can high-grade specific areas in the basin for exploration. Based on subsurface log correlations, the Morrow clastics and Atoka carbonates in the northern Delaware basin are interpreted as three stratigraphic sequences bounded by subregional type I unconformities. The post-Mississippian unconformity represents the oldest sequence boundary in the Morrow-to-Atoka succession and formed as the base level dropped and the shoreline shifted at least 50 mi basinward. The uplifted Pedernal Highlands supplied sediment to dip-trending lower Morrow channels that downcut into the exposed Mississippian carbonate ramp surface. The transgressive systems tract in this sequence consists of landward-stepping, wave-dominated deltaic deposit. The Morrow shale, a regionally correlatable organic-rich shale that separates the lower Morrow from the middle Morrow, represents the highstand deposits as base level that rose to a maximum. Another base level drop occurred at the end of Morrow shale deposition and resulted in dip-trending channel-fill sandstones and, stacked landward stepping transgressive beach and offshore ridge deposits oriented parallel to strike. The highstand progradational deposits of this sequence formed a terrace that supplied a shelf margin system of deltaic and slope-apron sediments during the succeeding third sequence. The shelf margin deposits are capped by highstand shelf carbonates of the upper Morrow and lower Atoka.

  20. Dissolved methane in groundwater, Upper Delaware River Basin, Pennsylvania and New York, 2007-12

    USGS Publications Warehouse

    Kappel, William M.

    2013-01-01

    The prospect of natural gas development from the Marcellus and Utica Shales has raised concerns about freshwater aquifers being vulnerable to contamination. Well owners are asking questions about subsurface methane, such as, “Does my well water have methane and is it safe to drink the water?” and “Is my well system at risk of an explosion hazard associated with a combustible gas like methane in groundwater?” This newfound awareness of methane contamination of water wells by stray gas migration is based upon studies such as Molofsky and others (2011) who document the widespread natural occurrence of methane in drinking-water wells in Susquehanna County, Pennsylvania. In the same county, Osborn and others (2011) identified elevated methane concentrations in selected drinking-water wells in the vicinity of Marcellus Shale gas-development activities, although pre-development groundwater samples were not available for comparison. A compilation of dissolved methane concentrations in groundwater for New York State was published by Kappel and Nystrom (2012). Recent work documenting the occurrence and distribution of methane in groundwater was completed in southern Sullivan County, Pennsylvania (Sloto, 2013). Additional work is ongoing with respect to monitoring for stray gases in groundwater (Jackson and others, 2013). These studies and their results indicate the importance of collecting baseline or pre-development data. While such data are being collected in some areas, published data on methane in groundwater are sparse in the Upper Delaware River Basin of Pennsylvania, New York, and New Jersey. To manage drinking-water resources in areas of gas-well drilling and hydraulic fracturing in the Upper Delaware River Basin, the natural occurrence of methane in the tri-state aquifers needs to be documented. The purpose of this report is to present data on dissolved methane concentrations in the groundwater in the Upper Delaware River Basin. The scope is restricted to

  1. Decadal Change in Forest Carbon Stocks in the Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Xu, B.; Plante, A. F.; Pan, Y.; Johnson, A. H.

    2013-12-01

    Forest carbon dynamics at different scales are controlled by different factors, which may alter the forest structure and processes. Long-term measurements of biomass and soil carbon stocks in a nested watershed DRB provide good opportunity for monitoring forest carbon dynamics at multiple scale, calibrating a regional forest process model, and exploring the carbon-water interaction. The Delaware River Basin (DRB) is an ideal watershed for forest carbon cycle research because the basin features diverse forest types and land-use history, and includes physiographic provinces representative of the eastern US. In 2001-2003, the Delaware River Basin Monitoring and Research Initiative established 66 forest plots in three intensive monitoring research sites (nested sub-watersheds in DRB) using Forest Service inventory protocols and enhanced measurements. Mean biomass carbon density was 235.7 × 93.7 Mg C ha-1 in French Creek, 193.2 × 83.9 Mg C ha-1 in Delaware Water Gap, and 264.7 × 74.4 Mg C ha-1 in Neversink River Basin. Soil carbon density (including forest floor and mineral soil to depth of 20 cm) was 80.1 Mg C ha-1, 85.4 Mg C ha-1, and 88.6 Mg C ha-1, respectively. These plots were revisited and re-measured in 2012-2013. In French Creek, where the biomass remeasurement was conducted in fall 2012, results show that, the average biomass carbon density increased by 17.9 Mg C ha-1 over the past decade. Changes in live biomass (live tree, sapling, shrub, herb etc.) and dead biomass (dead tree, coarse woody debris, litter, duff etc.) contribute equally to the total biomass change. However, in a few plots total biomass carbon density decreased by 7.6 to 43.1 Mg C ha-1 due to disturbance from logging or invasive species. Based on the preliminary result, the different effects of climatic, topographic and geological factors on carbon stocks could be detected among the small watersheds. But within a watershed, changes in biomass and soil carbon stocks may depend mainly on

  2. Sensitivity of water resources in the Delaware River basin to climate variability and change

    USGS Publications Warehouse

    Ayers, Mark A.; Wolock, David M.; McCabe, Gregory J.; Hay, Lauren E.; Tasker, Gary D.

    1993-01-01

    Because of the "greenhouse effect," projected increases in atmospheric carbon dioxide levels might cause global warming, which in turn could result in changes in precipitation patterns and evapotranspiration and in increases in sea level. This report describes the greenhouse effect; discusses the problems and uncertainties associated with the detection, prediction, and effects of climatic change, and presents the results of sensitivity-analysis studies of the potential effects of climate change on water resources in the Delaware River basin. On the basis of sensitivity analyses, potentially serious shortfalls of certain water resources in the basin could result if some climatic-change scenarios become true. The results of basin streamflow-model simulations in this study demonstrate the difficulty in distinguishing effects of climatic change on streamflow and water supply from effects of natural variability in current climate. The future direction of basin changes in most water resources, furthermore, cannot be determined precisely because of uncertainty in current projections of regional temperature and precipitation. This large uncertainty indicates that, for resource planning, information defining the sensitivities of water resources to a range of climate change is most relevant. The sensitivity analyses could be useful in developing contingency plans on how to evaluate and respond to changes, should they occur.

  3. Sensitivity of water resources in the Delaware River basin to climate variability and change

    USGS Publications Warehouse

    Ayers, Mark A.; Wolock, David M.; McCabe, Gregory J.; Hay, Lauren E.; Tasker, Gary D.

    1994-01-01

    Because of the greenhouse effect, projected increases in atmospheric carbon dioxide levels might cause global warming, which in turn could result in changes in precipitation patterns and evapotranspiration and in increases in sea level. This report describes the greenhouse effect; discusses the problems and uncertainties associated with the detection, prediction, and effects of climate change; and presents the results of sensitivity analyses of how climate change might affect water resources in the Delaware River basin. Sensitivity analyses suggest that potentially serious shortfalls of certain water resources in the basin could result if some scenarios for climate change come true . The results of model simulations of the basin streamflow demonstrate the difficulty in distinguishing the effects that climate change versus natural climate variability have on streamflow and water supply . The future direction of basin changes in most water resources, furthermore, cannot be precisely determined because of uncertainty in current projections of regional temperature and precipitation . This large uncertainty indicates that, for resource planning, information defining the sensitivities of water resources to a range of climate change is most relevant . The sensitivity analyses could be useful in developing contingency plans for evaluating and responding to changes, should they occur.

  4. Estimating probabilities of reservoir storage for the upper Delaware River basin

    USGS Publications Warehouse

    Hirsch, Robert M.

    1981-01-01

    A technique for estimating conditional probabilities of reservoir system storage is described and applied to the upper Delaware River Basin. The results indicate that there is a 73 percent probability that the three major New York City reservoirs (Pepacton, Cannonsville, and Neversink) would be full by June 1, 1981, and only a 9 percent probability that storage would return to the ' drought warning ' sector of the operations curve sometime in the next year. In contrast, if restrictions are lifted and there is an immediate return to normal operating policies, the probability of the reservoir system being full by June 1 is 37 percent and the probability that storage would return to the ' drought warning ' sector in the next year is 30 percent. (USGS)

  5. Analysis of stream-temperature variations in the Upper Delaware River Basin, New York

    USGS Publications Warehouse

    Williams, Owen O.

    1971-01-01

    The effect of climatologic conditions and reservoir releases on downstream conditions was determined by means of statistical and graphical analyses of stream-temperature variations measured in the upper Delaware River basin, May-September 1964-67. Climatologic conditions normally increase water temperatures from February through July and decrease them from August through January. Summer releases from New York City's Cannonsville Reservoir were observed to decrease water temperatures by 13?C (Celsius) in 8.1 miles and by 1?C, 55.9 miles downstream from this reservoir. Releases from New York City's Pepacton Reservoir were observed to decrease water temperatures by 11?C in 31.0 miles and between 1?-3?C in 71.0 miles downstream from this reservoir. The influence of releases from these reservoirs is dependent upon five factors: thermal stratification in the reservoir, depth at which water is withdrawn from the reservoir, rate of release, distance downstream from the reservoir, and climatologic conditions.

  6. Potential well yields from unconsolidated deposits in the lower Hudson and Delaware River basins, New York

    USGS Publications Warehouse

    Wolcott, Stephen W.

    1987-01-01

    A comprehensive groundwater protection plan, developed by the New York State Department of Environmental Conservation in 1985, identified the need to delineate significant aquifers within the state. A map of the unconsolidated aquifers in the lower Hudson and Delaware River basins was compiled from available data on the surficial geology and well yields. It delineates the significant unconsolidated aquifers and indicates the potential yield of wells that tap these aquifers. The potential well yield is categorized into three ranges: < 10 gal/min; 10 to 100 gal/min; and > 100 gal/min. No yield range is given for till, but some large diameter or dug wells in till may yield up 10 gal/min. (Lantz-PTT)

  7. Advanced reservoir characterization for improved oil recovery in a New Mexico Delaware basin project

    SciTech Connect

    Martin, F.D.; Kendall, R.P.; Whitney, E.M.

    1997-08-01

    The Nash Draw Brushy Canyon Pool in Eddy County, New Mexico is a field demonstration site in the Department of Energy Class III program. The basic problem at the Nash Draw Pool is the low recovery typically observed in similar Delaware fields. By comparing a control area using standard infill drilling techniques to a pilot area developed using advanced reservoir characterization methods, the goal of the project is to demonstrate that advanced technology can significantly improve oil recovery. During the first year of the project, four new producing wells were drilled, serving as data acquisition wells. Vertical seismic profiles and a 3-D seismic survey were acquired to assist in interwell correlations and facies prediction. Limited surface access at the Nash Draw Pool, caused by proximity of underground potash mining and surface playa lakes, limits development with conventional drilling. Combinations of vertical and horizontal wells combined with selective completions are being evaluated to optimize production performance. Based on the production response of similar Delaware fields, pressure maintenance is a likely requirement at the Nash Draw Pool. A detailed reservoir model of pilot area was developed, and enhanced recovery options, including waterflooding, lean gas, and carbon dioxide injection, are being evaluated.

  8. Modeling the Effects of Land Use and Climate Change on Streamflow in the Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Kwon, P. Y. S.; Endreny, T. A.; Kroll, C. N.; Williamson, T. N.

    2014-12-01

    Forest-cover loss and drinking-water reservoirs in the upper Delaware River Basin of New York may alter summer low streamflows, which could degrade the in-stream habitat for the endangered dwarf wedgemussel. Our project analyzes how flow statistics change with land-cover change for 30-year increments of model-simulated streamflow hydrographs for three watersheds of concern to the National Park Service: the East Branch, West Branch, and main stem of the Delaware River. We use four treatments for land cover ranging from historical high to low forest cover. We subject each land cover to adjusted GCM climate scenarios for 1600, 1900, 1940, and 2040 to isolate land cover from potential climate-change effects. Hydrographs are simulated using the Water Availability Tool for Environmental Resources (WATER), a TOPMODEL-based United States Geological Survey hydrologic decision-support tool, which uses the variable-source-area concept and water budgets to generate streamflow. Model parameters for each watershed change with land-use, and capture differences in soil-physical properties that control how rainfall infiltrates, evaporates, transpires, is stored in the soil, and moves to the stream. Our results analyze flow statistics used as indicators of hydrologic alteration, and access streamflow events below the critical flow needed to provide sustainable habitat for dwarf wedgemussels. These metrics will demonstrate how changes in climate and land use might affect flow statistics. Initial results show that the 1940 WATER simulation outputs generally match observed unregulated low flows from that time period, while performance for regulated flow from the same time period and from 1600, 1900, and 2040 require model input adjustments. Our study will illustrate how increased forest cover could potentially restore in-stream habitat for the endangered dwarf wedgemussel for current and future climate conditions.

  9. Orbital forced rhythmites in the upper Lamar Limestone (Guadalupian) of the Delaware Basin, West Texas, USA

    NASA Astrophysics Data System (ADS)

    Jin, Y.; Xuan, C.; Noble, P. J.

    2010-12-01

    Gray scale data, radiolarian relative abundance, and three types of geochemical data (oxygen isotope of bulk carbonates, organic carbon isotope, and total organic carbon) collected from an ~8 m section of the upper Lamar Limestone (Guadalupian) in the Delaware Basin, West Texas, USA, show apparent rhythms that mimic orbital variations. Spectral analyses on the radiolarian relative abundance and geochemical data, using Blackman-Tukey, multi-taper, maximum entropy, and REDFIT (Schulz, M., Mudelsee, M., 2002, REDFIT: estimating red-noise spectra directly from unevenly spaced paleoclimatic time series. Comput. Geosci. 28, 421-426) methods, reveal a common period with cycle length of ~1.16 m. Another spectral peak, which corresponds to period with cycle length of ~5.50 m, appears to be common in power spectra of the geochemical proxies. Power spectra of the high-resolution gray scale data are dominated by periods that have cycle length around 1.2-1.6 m, 0.67 m, 0.24-0.31 m, 0.14-0.18 m, and 0.07-0.09 m. Wavelet analyses confirm the existence of these cycles, and suggest that the power of the dominant periods in these parameters varies through the section, presumably due to accumulation rate variations. Average spectral misfit calculation (Meyers, S.R., Sageman, B.B., 2007, Quantification of deep-time orbital forcing by average spectral misfit. Am. J. Sci. 307, 773-792) using dominant frequencies from the power spectra of the gray scale data implies that average accumulation rates of ~1.5 cm/kyr provide the best fit of the data to orbital frequencies. Statistic tests for rejecting the null hypothesis (no orbital signal), on a wide range of average accumulation rates, also suggest lowest significance levels of the tests for accumulation rates around 1.5 cm/kyr. The ~1.5 cm/kyr accumulation rates are within the accumulation rate range estimated for the Capitanian strata in the basin-margin facies of the Delaware Basin. The Lamar Limestone appears to record the eccentricity

  10. The role of remotely sensed and relayed data in the Delaware River Basin

    NASA Technical Reports Server (NTRS)

    Paulson, R. W.

    1970-01-01

    A discussion is presented of the planned integration of the existing Delaware River Basin water quality monitoring and data processing systems with a data relay experiment proposed for the Earth Resources Technology Satellite (ERTS)-A, which will be launched in 1972. The experiment is designed to use ERTS-A as a data relay link for a maximum of 20 hydrologic stations in the basin, including streamgaging, reservoir level, ground water level,and water quality monitoring stations. This experiment has the potential for reducing the timelag between data collection and dissemination to less than 12 hours. At present there is a significant timelag between the time when the data are recorded at a monitoring site and the water resources agencies receive the data. The timelag exists because most of these instruments operate in remote locations without telementry, and the data records are removed manually, generally at a weekly frequency. For most water quality monitoring, the data do not reach water resources agencies for a period of 2 weeks to 2 months.

  11. Application of advanced reservoir characterization, simulation and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin). Annual report

    SciTech Connect

    Dutton, S.P.; Asquith, G.B.; Barton, M.D.; Cole, A.G.; Gogas, J.; Malik, M.A.; Clift, S.J.; Guzman, J.I.

    1997-11-01

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost-effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. This project involves reservoir characterization of two Late Permian slope and basin clastic reservoirs in the Delaware Basin, West Texas, followed by a field demonstration in one of the fields. The fields being investigated are Geraldine Ford and Ford West fields in Reeves and Culberson Counties, Texas. Project objectives are divided into two major phases, reservoir characterization and implementation. The objectives of the reservoir characterization phase of the project were to provide a detailed understanding of the architecture and heterogeneity of the two fields, the Ford Geraldine unit and Ford West field. Reservoir characterization utilized 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once reservoir characterized was completed, a pilot area of approximately 1 mi{sup 2} at the northern end of the Ford Geraldine unit was chosen for reservoir simulation. This report summarizes the results of the second year of reservoir characterization.

  12. DELAWARE ESTUARY PCB MODEL

    EPA Science Inventory

    The Delaware River Basin Commission recently completed the first phase of a program to develop and implement Total Maximum Daily Loads (TMDLs) for toxic pollutants for the Delaware Estuary. This complex body of water extends from the head of tide at Trenton, NJ (River Mile 133.2...

  13. Groundwater quality in the Delaware and St. Lawrence River Basins, New York, 2010

    USGS Publications Warehouse

    Nystrom, Elizabeth A.

    2012-01-01

    Water quality in both study areas is generally good, but concentrations of some constituents equaled or exceeded current or proposed Federal or New York State drinking-water standards. The standards exceeded are color (one sample in the St. Lawrence study area), pH (three samples in the Delaware study area), sodium (one sample in the St. Lawrence study area), total dissolved solids (one sample in the St. Lawrence study area), aluminum (one sample in the Delaware study area and one sample in the St. Lawrence study area), iron (seven samples in the St. Lawrence study area), manganese (one sample in the Delaware study area and five samples in the St. Lawrence study area), gross alpha radioactivity (one sample in the St. Lawrence study area), radon-222 (10 samples in the Delaware study area and 14 samples in the St. Lawrence study area), and bacteria (

  14. Radiometric dating of Ochoan (Permian) evaporites, WIPP (Waste Isolation Pilot Plant) site, Delaware Basin, New Mexico, USA

    SciTech Connect

    Brookins, D.G.; Lambert, S.J.

    1986-01-01

    We have attempted radiometric dating of halide-sulfate salts and clay minerals from the Delaware Basin, New Mexico, USA, as part of geochemical study of the stability of the evaporite sequence at the WIPP (Waste Isolation Pilot Plant - a US DOE facilty) site. We undertook this dating to determine: (1) primary age of evaporite genesis or time(s) of recrystallization; (2) if previously undated evaporite minerals (leonite, polyhalite, kieserite) give useful data; and (3) if the detrital clay minerals have been radiometrically reset at any time following their incorporation into the evaporite medium. We have shown earlier that polyhalites can indeed be successfully dated by the K-Ar method, and once corrections are applied for admixed halide minerals, dates of 210-230 Ma for the Delaware Basin are obtained. Rb-Sr isochrons from early stage sylvites-polyhalites- anhydrites yield 220 +- 10 Ma, even when some sylvites yield lower K-Ar dates due to loss of *40-Ar. K-Ar dates on leonites and kieserities are also low due to *40-Ar loss, but their Rb-Sr dates are higher. Detrital clay minerals from the Delaware Basin collectively yield a highly scattered isochron (390 +- 77 Ma), but samples from a local area, such as the WIPP Site, give a much better age of 428 +- 7 Ma. These dates show that the interaction between the clay minerals and the evaporitic brines was insufficient to reset the clay minerals Rb-Sr systematics. In a related study, we note that a dike emplaced into the evaporite at 34 Ma had only very limited effect on the intruded rocks; contact phenomena were all within 2 m of the dike. All of our geochemical (radio-metric and trace element) studies of the WIPP site argue for preservation of the isotopic and chemical integrity of the major minerals for the past 200 Ma.

  15. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin)

    SciTech Connect

    Shirley P. Dutton

    1997-07-30

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir-characterization study of both fields is completed, a pilot area of approximately 1 mi 2 in one of the fields will be chosen for reservoir simulation.

  16. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope, and Basin Clastic Reservoirs, West Texas (Delaware Basin)

    SciTech Connect

    Shirley P. Dutton

    1997-04-30

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir-characterization study of both fields is completed, a pilot area of approximately 1 mi 2 in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO 2 flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Through technology transfer workshops and other presentations, the knowledge gained in the comparative study of these two fields can then be applied to increase production from the more

  17. Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope and Basin Clastic Reservoirs, West Texas (Delaware Basin).

    SciTech Connect

    Dutton, S.P.

    1997-10-30

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir- characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sub 2} flood, water flood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Through technology transfer workshops and other present at ions, the knowledge gained in the comparative study of these two fields can then be applied to increase product ion

  18. Effects of climatic change and climatic variability on the Thornthwaite moisture index in the Delaware River basin

    USGS Publications Warehouse

    McCabe, G.J., Jr.; Wolock, D.M.

    1992-01-01

    The Thornthwaite moisture index is useful as an indicator of the supply of water in an area relative to the demand under prevailing climatic conditions. This study examines the effects of long-term changes in climate (temperature and precipitation) on the Thornthwaite moisture index in the Delaware River basin. Temperature and precipitation estimates for doubled-CO2 conditions derived from three general circulation models (GCMs) are used to study the response of the moisture index for steady-state doubled-CO2 conditions and for gradual changes from present to doubled-CO2 conditions. Results of the study indicate that temperature and precipitation under doubled-CO2 conditions will cause the Thornthwaite moisture index to decrease, implying significantly drier conditions in the Delaware River basin than currently exist. The amount of decrease depends, however, on the GCM climatic-change scenario used. The results also indicate that future changes in the moisture index will be partly masked by natural year-to-year variability in temperature and precipitation. ?? 1992 Kluwer Academic Publishers.

  19. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin). Technical progress report

    SciTech Connect

    Dutton, S.P.

    1996-04-30

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. One the reservoir-characterization study of both field is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to: (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area; (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments; and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced recovery program (CO{sub 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill well will be drilled and cored. Technical progress is summarized for: geophysical characterization; reservoir characterization; outcrop characterization; and producibility problem characterization.

  20. Sulfuric acid speleogenesis of Carlsbad Cavern and its relationship to hydrocarbons, Delaware basin, New Mexico and Texas

    SciTech Connect

    Hill, C.A. )

    1990-11-01

    Sulfur-isotope data and pH-dependence of the mineral endellite support the hypothesis that Carlsbad Cavern and other caves in the Guadalupe Mountains were dissolved primarily by sulfuric acid rather than by carbonic acid. Floor gypsum deposits up to 10 m thick and native sulfur in the caves are significantly enriched in {sup 32}S; {delta}{sup 34}S values as low as {minus}25.8 {per thousand} (CDT) indicate that the cave sulfur and gypsum are the end products of microbial reactions associated with hydrocarbons. A model for a genetic connection between hydrocarbons in the basin and caves in the Guadalupe Mountains is proposed. As the Guadalupe Mountains were uplifted during the late Pliocene-Pleistocene, oil and gas moved updip in the basin. The gas reacted with sulfate anions derived from dissolution of the Castile anhydrite to form H{sub 2}S, CO{sub 2}, and castile limestone. The hydrogen sulfide rose into the Capitan reef along joints, forereef carbonate beds, or Bell Canyon siliciclastic beds and there reacted with oxygenated groundwater to form sulfuric acid and Carlsbad Cavern. A sulfuric-acid mode of dissolution may be responsible for large-scale porosity of some Delaware basin reservoirs and for oil-field karst reservoirs in other petroleum basins of the world. 8 figs.

  1. Role of sea-level change in deep water deposition along a carbonate shelf margin, Early and Middle Permian, Delaware Basin: implications for reservoir characterization

    NASA Astrophysics Data System (ADS)

    Li, Shunli; Yu, Xinghe; Li, Shengli; Giles, Katherine A.

    2015-04-01

    The architecture and sedimentary characteristics of deep water deposition can reflect influences of sea-level change on depositional processes on the shelf edge, slope, and basin floor. Outcrops of the northern slope and basin floor of the Delaware Basin in west Texas are progressively exposed due to canyon incision and road cutting. The outcrops in the Delaware Basin were measured to characterize gravity flow deposits in deep water of the basin. Subsurface data from the East Ford and Red Tank fields in the central and northeastern Delaware Basin were used to study reservoir architectures and properties. Depositional models of deep water gravity flows at different stages of sea-level change were constructed on the basis of outcrop and subsurface data. In the falling-stage system tracts, sandy debris with collapses of reef carbonates are deposited on the slope, and high-density turbidites on the slope toe and basin floor. In the low-stand system tracts, deep water fans that consist of mixed sand/mud facies on the basin floor are comprised of high- to low-density turbidites. In the transgression and high-stand system tracts, channel-levee systems and elongate lobes of mud-rich calciturbidite deposits formed as a result of sea level rise and scarcity of sandy sediment supply. For the reservoir architecture, the fan-like debris and high-density turbidites show high net-to-gross ratio of 62 %, which indicates the sandiest reservoirs for hydrocarbon accumulation. Lobe-like deep water fans with net-to-gross ratio of 57 % facilitate the formation of high quality sandy reservoirs. The channel-levee systems with muddy calciturbidites have low net-to-gross ratio of 30 %.

  2. Bridging the GAPS from Space: A Research/Educational Partnership in the Upper Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Brown de Colstoun, E.; Robin, J.; Minelli, S.; Katsaros, M.; Peterec, I.; Sandt, K.

    2006-05-01

    The National Park Service (NPS) Inventory and Monitoring (I&M) Program is currently developing scientific protocols to inventory and monitor the natural resources of 270 park units at the national level. These are aimed at providing critical tools needed by park managers for effective decision-making regarding the management and stewardship of the resources they are charged with protecting. We are currently developing a satellite-based regional land cover and land use monitoring protocol that addresses the immediate needs of the NPS I&M. This is a pilot project that examines land cover/use changes in and around the Upper Delaware Scenic and Recreational River and Delaware Water Gap National Recreation Area national parks from Landsat data for the period 1984 to 2005, in one the fastest growing regions in the country. The products resulting from the application of the protocols are then used to guide the simulation of land cover/use changes within a simple Soil-Vegetation-Atmosphere-Transfer (SVAT) model called GAPS in order to better understand the consequences of the measured land cover/use change on the water and energy cycles of the parks and surrounding areas. The data needed for product validation and model parameterization are being acquired with the assistance of students and educators from area schools using protocols established through the GLOBE program. Through focused workshops organized in collaboration with NPS educational specialists and PA regional educational service agencies called Intermediate Units, and participation in hands-on field measurement campaigns, students and educators are learning about satellite remote sensing interpretation, land cover classification, and how to measure/monitor changes in land cover/use in their communities. Students will also assist in the model simulations using the data they acquire in the field. This partnership between the Principal Investigator, the NPS, Intermediate Units and area students and educators is

  3. Assessment of the potential effects of climate change on water resources of the Delaware River basin; work plan for 1988-90

    USGS Publications Warehouse

    Ayers, M.A.; Leavesley, G.H.

    1989-01-01

    The current consensus is that some global atmospheric warming will occur as a result of increasing ' greenhouse ' gases. Water resources scientists, planners, and managers are concerned about the uncertainty associated with climatic-change effects on water supplies and what planning might be necessary to mitigate the effects. Collaborative studies between climatologists, hydrologists, biologists, and others are needed to gain this understanding. The Delaware River basin study is an interdisciplinary effort on the part of the U.S. Geological Survey that was initiated to improve understanding of the sensitivity of the basin 's water resources to the potential effects of climate change. The Delaware River basin is 12,765 sq mi in area, crosses five physiographic provinces, and supplies water for an estimated 20 million people within and outside the basin. Climate change presumably will result in changes in precipitation and temperature and could have significant effects on evapotranspiration, streamflow, and groundwater recharge. A rise in sea level is likely to accompany global warming and, depending on changes in freshwater inflows, could alter the salinity of the Estuary and increase saline-water intrusion into adjacent aquifer systems. Because the potential effects are not well understood, this report discusses how the effects of climate change on the basin 's water resources might be defined and evaluated. The study objective is to investigate the basin 's hydrologic response, under existing water management policy and infrastructure, to various scenarios of climate change. Specific objectives include defining the temporal and spatial variability of basin hydrology under existing climate conditions , developing climate-change scenarios, and evaluating the potential effects and sensitivities of basin water availability to these scenarios. The objectives will be accomplished through intensive modeling analysis of the basin 's climate, watershed, estuary, and

  4. Landscape characteristics affecting streams in urbanizing regions of the Delaware River Basin (New Jersey, New York, and Pennsylvania, U.S.)

    USGS Publications Warehouse

    Riva-Murray, K.; Riemann, R.; Murdoch, P.; Fischer, J.M.; Brightbill, R.

    2010-01-01

    Widespread and increasing urbanization has resulted in the need to assess, monitor, and understand its effects on stream water quality. Identifying relations between stream ecological condition and urban intensity indicators such as impervious surface provides important, but insufficient information to effectively address planning and management needs in such areas. In this study we investigate those specific landscape metrics which are functionally linked to indicators of stream ecological condition, and in particular, identify those characteristics that exacerbate or mitigate changes in ecological condition over and above impervious surface. The approach used addresses challenges associated with redundancy of landscape metrics, and links landscape pattern and composition to an indicator of stream ecological condition across a broad area of the eastern United States. Macroinvertebrate samples were collected during 2000-2001 from forty-two sites in the Delaware River Basin, and landscape data of high spatial and thematic resolution were obtained from photointerpretation of 1999 imagery. An ordination-derived 'biotic score' was positively correlated with assemblage tolerance, and with urban-related chemical characteristics such as chloride concentration and an index of potential pesticide toxicity. Impervious surface explained 56% of the variation in biotic score, but the variation explained increased to as high as 83% with the incorporation of a second land use, cover, or configuration metric at catchment or riparian scales. These include land use class-specific cover metrics such as percent of urban land with tree cover, forest fragmentation metrics such as aggregation index, riparian metrics such as percent tree cover, and metrics related to urban aggregation. Study results indicate that these metrics will be important to monitor in urbanizing areas in addition to impervious surface. ?? 2010 US Government.

  5. Hydrogeology of the Beaver Kill basin in Sullivan, Delaware, and Ulster Counties, New York

    USGS Publications Warehouse

    Reynolds, Richard J.

    2000-01-01

    The hydrogeology of the 299-square-mile Beaver Kill basin in the southwestern Catskill Mountains of southeastern New York is depicted in a surficial geologic map and five geologic sections, and is summarized through an analysis of low-flow statistics for the Beaver Kill and its major tributary, Willowemoc Creek. Surficial geologic data indicate that the most widespread geologic units within the basin are ablation and lodgment till. Large masses of ablation till as much as 450 feet thick were deposited as lateral embankments within the narrow Beaver Kill and Willowemoc Creek valleys and have displaced the modern stream courses by as much as 1,000 feet from the preglacial bedrock-valley axis. Low-flow statistics for the Beaver Kill and Willowemoc Creeks indicate that the base flows (discharges that are exceeded 90 percent of the time) of these two streams--0.36 and 0.39 cubic feet per square mile,respectively--are the highest of 13 Catskill Mountain streams studied. High base flows elsewhere in the glaciated northeastern United States are generally associated with large stratified-drift aquifers, however, stratified drift in these two basins accounts for only about 5 percent and 4.4 percent of their respective surface areas, respectively. The high base flows in these two basins appear to correlate with an equally high percentage of massive sandstone members of the Catskill Formation, which underlies the entire region. Ground-water seepage from these sandstone members may be responsible for the high base flows of these two streams.

  6. Assessing potential impacts of a wastewater rapid infiltration basin system on groundwater quality: a delaware case study.

    PubMed

    Andres, A S; Sims, J Thomas

    2013-01-01

    Rapid infiltration basin systems (RIBS) are receiving increased interest for domestic wastewater disposal in rural areas. They rely on natural treatment processes to filter pollutants and use extremely high effluent loading rates, much greater than natural precipitation, applied to a small geographic area instead of disposal to surface water. Concerns exist today that adopting RIBS in areas with shallow groundwater and sandy soils may increase ground and surface water pollution. We conducted a field study of RIBS effects on N and P concentrations in soils and groundwater at Cape Henlopen State Park, Delaware, where a RIBS designed and operated following USEPA guidance has been used for >25 yr. Site and wastewater characteristics (water table of 8 m, Fe- and Al-oxide coatings on soils, organic-rich effluent) were favorable for denitrification and P sorption; however, we found high P saturation, reduced soil P sorption capacity, and significant total P accumulation at depths >1.5 m, factors that could lead to dissolved P leaching. Very low soil inorganic N levels suggest that wastewater N was converted rapidly to NO-N and leached from the RIBS. Extensive groundwater monitoring supported these concerns and showed rapid offsite transport of N and P at concentrations similar to the effluent. Results suggest that high hydraulic loads and preferential flow led to flow velocities that were too large, and contact times between effluent and soils that were too short, for effective N and P attenuation processes. These findings indicate the need for better site characterization and facility designs to reduce and monitor contaminant loss from RIBS in similar settings. PMID:23673831

  7. Uncertainties in forest soil carbon and nitrogen estimates related to soil sampling methods in the Delaware River Basin

    NASA Astrophysics Data System (ADS)

    Xu, B.; Plante, A. F.; Johnson, A. H.; Pan, Y.

    2014-12-01

    Estimating forest soil carbon and nitrogen (CN) is critical to understanding ecosystem responses to changing climate, disturbance and forest management practices. Most of the uncertainty in soil CN cycling is associated with the difficulty in characterizing soil properties in field sampling because forest soils can be rocky, inaccessible and spatially heterogeneous. A composite coring technique is broadly applied as the standard FIA soil sampling protocol. However, the accuracy of this method might be limited by soil compaction, rock obstruction and plot selection problems during sampling. In contrast, the quantitative soil pit sampling method may avoid these problems and provides direct measurements of soil mass, rock volume and CN concentration representative of a larger ground surface area. In this study, the two sampling methods were applied in 60 forest plots, randomly located in three research areas in the Delaware River Basin in the U.S. Mid-Atlantic region. In each of the plots, one quantitative soil pit was excavated and three soil cores were collected. Our results show that average soil bulk density in the top 20 cm mineral soil measured from the soil cores was consistently lower than bulk density measured by soil pits. However, the volume percentage of coarse fragments measured by the core method was also significantly lower than the pit method. Conversely, CN concentrations were greater in core samples compared to pit samples. The resulting soil carbon content (0-20 cm) was estimated to be 4.1 ± 0.4 kg m-2 in the core method compared to 4.5 ± 0.4 kg m-2 in the pit method. Lower bulk density but higher CN concentration and lower coarse fragments content from the cores have offset each other, resulting in no significant differences in CN content from the soil pit method. Deeper soil (20-40 cm), which is not accessible in the core method, accounted for 29% of the total soil carbon stock (0-40 cm) in the pit method. Our results suggest that, although soil

  8. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin). Quarterly report, April 1,1996 - June 30, 1996

    SciTech Connect

    Dutton, S.P.

    1996-07-01

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir- characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sub 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Progress to date is summarized for reservoir characterization.

  9. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin). Quarterly report, October 1 - December 31, 1996

    SciTech Connect

    Dutton, S.P.

    1997-01-01

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir-characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sub 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Technical progress is summarized for: geophysical characterization; reservoir characterization; outcrop characterization; and recovery technology identification and analysis.

  10. Application of advanced reservoir characterization, simulation, and production optimization strategies to maximize recovery in slope and basin clastic reservoirs, West Texas (Delaware Basin). Quarterly report, July 1 - September 30, 1996

    SciTech Connect

    Dutton, S.P.

    1996-10-01

    The objective of this project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two major phases. The objectives of the reservoir characterization phase of the project are to provide a detailed understanding of the architecture and heterogeneity of two fields, the Ford Geraldine unit and Ford West field, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, of the Delaware Mountain Group and to compare Bell Canyon and Cherry Canyon reservoirs. Reservoir characterization will utilize 3-D seismic data, high-resolution sequence stratigraphy, subsurface field studies, outcrop characterization, and other techniques. Once the reservoir- characterization study of both fields is completed, a pilot area of approximately 1 mi{sup 2} in one of the fields will be chosen for reservoir simulation. The objectives of the implementation phase of the project are to (1) apply the knowledge gained from reservoir characterization and simulation studies to increase recovery from the pilot area, (2) demonstrate that economically significant unrecovered oil remains in geologically resolvable untapped compartments, and (3) test the accuracy of reservoir characterization and flow simulation as predictive tools in resource preservation of mature fields. A geologically designed, enhanced-recovery program (CO{sup 2} flood, waterflood, or polymer flood) and well-completion program will be developed, and one to three infill wells will be drilled and cored. Accomplishments for this past quarter are discussed.

  11. Sulfur redox reactions: Hydrocarbons, native sulfur, Mississippi Valley-type deposits, and sulfuric acid karst in the Delaware Basin, New Mexico and Texas

    SciTech Connect

    Hill, C.A.

    1995-02-01

    Hydrocarbons, native sulfur, Mississippi Valley-type (MVT) deposits, and sulfuric acid karst in the Delaware Basin, southeastern New Mexico, and west Texas, USA, are all genetically related through a series of sulfur redox reactions. The relationship began with hydrocarbons in the basin that reacted with sulfate ions from evaporite rock to produce isotopically light ({delta}{sup 34}S = -22 to -12) H{sub 2}S and bioepigenetic limestone (castiles). This light H{sub 2}S was then oxidized at the redox interface to produce economic native sulfur deposits ({delta}{sup 34}S = -15 to +9) in the castiles, paleokarst, and along graben-boundary faults. This isotopically light H{sub 2}S also migrated from the basin into its margins to accumulate in structural (anticlinal) and stratigraphic (Yates siltstone) traps, where it formed MVT deposits within the zone of reduction ({delta}{sup 34}S = -15 to +7). Later in time, in the zone of oxidation, this H{sub 2}S reacted with oxygenated water to produce sulfuric acid, which dissolved the caves (e.g., Carlsbad Cavern and Lechuguilla Cave, Guadalupe Mountains). Massive gypsum blocks on the floors of the caves ({delta}{sup 34}S = -25 to +4) were formed as a result of this reaction. The H{sub 2}S also produced isotopically light cave sulfur ({delta}{sup 34}S = -24 to -15), which is now slowly oxidizing to gypsum in the presence of vadose drip water. 16 refs., 10 figs.

  12. 18 CFR 415.20 - Class I projects.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Class I projects. 415.20 Section 415.20 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION ADMINISTRATIVE MANUAL BASIN REGULATIONS-FLOOD PLAIN REGULATIONS Types of Projects and Jurisdiction § 415.20...

  13. 18 CFR 415.20 - Class I projects.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 2 2011-04-01 2011-04-01 false Class I projects. 415.20 Section 415.20 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION ADMINISTRATIVE MANUAL BASIN REGULATIONS-FLOOD PLAIN REGULATIONS Types of Projects and Jurisdiction § 415.20...

  14. 18 CFR 415.21 - Class II projects.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 18 Conservation of Power and Water Resources 2 2012-04-01 2012-04-01 false Class II projects. 415.21 Section 415.21 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION... flooded, would pollute the waters of the basin or threaten damage to off-site areas, including,...

  15. 18 CFR 415.21 - Class II projects.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 18 Conservation of Power and Water Resources 2 2013-04-01 2012-04-01 true Class II projects. 415.21 Section 415.21 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION... flooded, would pollute the waters of the basin or threaten damage to off-site areas, including,...

  16. 18 CFR 415.21 - Class II projects.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 18 Conservation of Power and Water Resources 2 2014-04-01 2014-04-01 false Class II projects. 415.21 Section 415.21 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION... flooded, would pollute the waters of the basin or threaten damage to off-site areas, including,...

  17. 18 CFR 415.21 - Class II projects.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 2 2011-04-01 2011-04-01 false Class II projects. 415.21 Section 415.21 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION... flooded, would pollute the waters of the basin or threaten damage to off-site areas, including,...

  18. 18 CFR 415.21 - Class II projects.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Class II projects. 415.21 Section 415.21 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION... flooded, would pollute the waters of the basin or threaten damage to off-site areas, including,...

  19. Overview of the structural geology and tectonics of the Central Basin Platform, Delaware Basin, and Midland Basin, West Texas and New Mexico

    SciTech Connect

    Hoak, T.; Sundberg, K.; Ortoleva, P.

    1998-12-31

    The structural geology and tectonics of the Permian Basin were investigated using an integrated approach incorporating satellite imagery, aeromagnetics, gravity, seismic, regional subsurface mapping and published literature. The two primary emphases were on: (1) delineating the temporal and spatial evolution of the regional stress state; and (2) calculating the amount of regional shortening or contraction. Secondary objectives included delineation of basement and shallower fault zones, identification of structural style, characterization of fractured zones, analysis of surficial linear features on satellite imagery and their correlation to deeper structures. Gandu Unit, also known as Andector Field at the Ellenburger level and Goldsmith Field at Permian and younger reservoir horizons, is the primary area of interest and lies in the northern part of Ector county. The field trends northwest across the county line into Andrews County. The field(s) are located along an Ellenburger thrust anticline trap on the eastern margin of the Central Basin Platform.

  20. Strategic Reinvention: The Rodel Foundation of Delaware's Journey to Catalyzing a System of World-Class Schools. Principles for Effective Education Grantmaking. Case Study No. 10

    ERIC Educational Resources Information Center

    Jenkins, Lynn; Wisdom, Michelle

    2014-01-01

    As the summer of 2014 began, Paul Herdman, President and CEO of the Rodel Charitable Foundation of Delaware, paused to reflect on what Delaware had accomplished over the past decade in the public education realm. Academic standards had been raised across the K-12 system, and a new assessment system aligned to those standards was being implemented.…

  1. 76 FR 50188 - Notice of Proposed Methodology for the Delaware River and Bay Integrated List Water Quality...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-12

    ... From the Federal Register Online via the Government Publishing Office DELAWARE RIVER BASIN COMMISSION Notice of Proposed Methodology for the Delaware River and Bay Integrated List Water Quality Assessment AGENCY: Delaware River Basin Commission. ACTION: Notice. SUMMARY: Notice is hereby given that...

  2. Delaware's Dream Team

    ERIC Educational Resources Information Center

    Berry, John N., III

    2007-01-01

    To librarians at the Delaware Division of Libraries, Governor Ruth Ann Minner, Secretary of State Harriet Smith Windsor, and Assistant Secretary of State Rick Geisenberger are "the Delaware Dream Team." The governor and her team supported funding for the 2004 statewide effort that resulted in the Delaware Master Plan for Library Services and…

  3. Analysis of Flood-Magnitude and Flood-Frequency Data for Streamflow-Gaging Stations in the Delaware and North Branch Susquehanna River Basins in Pennsylvania

    USGS Publications Warehouse

    Roland, Mark A.; Stuckey, Marla H.

    2007-01-01

    The Delaware and North Branch Susquehanna River Basins in Pennsylvania experienced severe flooding as a result of intense rainfall during June 2006. The height of the flood waters on the rivers and tributaries approached or exceeded the peak of record at many locations. Updated flood-magnitude and flood-frequency data for streamflow-gaging stations on tributaries in the Delaware and North Branch Susquehanna River Basins were analyzed using data through the 2006 water year to determine if there were any major differences in the flood-discharge data. Flood frequencies for return intervals of 2, 5, 10, 50, 100, and 500 years (Q2, Q5, Q10, Q50, Q100, and Q500) were determined from annual maximum series (AMS) data from continuous-record gaging stations (stations) and were compared to flood discharges obtained from previously published Flood Insurance Studies (FIS) and to flood frequencies using partial-duration series (PDS) data. A Wilcoxon signed-rank test was performed to determine any statistically significant differences between flood frequencies computed from updated AMS station data and those obtained from FIS. Percentage differences between flood frequencies computed from updated AMS station data and those obtained from FIS also were determined for the 10, 50, 100, and 500 return intervals. A Mann-Kendall trend test was performed to determine statistically significant trends in the updated AMS peak-flow data for the period of record at the 41 stations. In addition to AMS station data, PDS data were used to determine flood-frequency discharges. The AMS and PDS flood-frequency data were compared to determine any differences between the two data sets. An analysis also was performed on AMS-derived flood frequencies for four stations to evaluate the possible effects of flood-control reservoirs on peak flows. Additionally, flood frequencies for three stations were evaluated to determine possible effects of urbanization on peak flows. The results of the Wilcoxon signed

  4. Migrant Farmworkers in Delaware.

    ERIC Educational Resources Information Center

    Delaware Advisory Committee to the U.S. Commission on Civil Rights, Dover.

    The Delaware Advisory Committee to the United States Commission on Civil Rights examined housing, employment, and health among the state's more than 1,500 migrants. Committee findings indicated: (1) there is no accurate count of migrants in the state or migrants in need of housing on a seasonal basis; (2) Delaware has pursued an aggressive policy…

  5. Ground-water quality and its relation to hydrogeology, land use, and surface-water quality in the Red Clay Creek basin, Piedmont Physiographic Province, Pennsylvania and Delaware

    USGS Publications Warehouse

    Senior, Lisa A.

    1996-01-01

    The Red Clay Creek Basin in the Piedmont Physiographic Province of Pennsylvania and Delaware is a 54-square-mile area underlain by a structurally complex assemblage of fractured metamorphosed sedimentary and igneous rocks that form a water-table aquifer. Ground-water-flow systems generally are local, and ground water discharges to streams. Both ground water and surface water in the basin are used for drinking-water supply. Ground-water quality and the relation between ground-water quality and hydrogeologic and land-use factors were assessed in 1993 in bedrock aquifers of the basin. A total of 82 wells were sampled from July to November 1993 using a stratified random sampling scheme that included 8 hydrogeologic and 4 land-use categories to distribute the samples evenly over the area of the basin. The eight hydrogeologic units were determined by formation or lithology. The land-use categories were (1) forested, open, and undeveloped; (2) agricultural; (3) residential; and (4) industrial and commercial. Well-water samples were analyzed for major and minor ions, nutrients, volatile organic compounds (VOC's), pesticides, polychlorinated biphenyl compounds (PCB's), and radon-222. Concentrations of some constituents exceeded maximum contaminant levels (MCL) or secondary maximum contaminant levels (SMCL) established by the U.S. Environmental Protection Agency for drinking water. Concentrations of nitrate were greater than the MCL of 10 mg/L (milligrams per liter) as nitrogen (N) in water from 11 (13 percent) of 82 wells sampled; the maximum concentration was 38 mg/L as N. Water from only 1 of 82 wells sampled contained VOC's or pesticides that exceeded a MCL; water from that well contained 3 mg/L chlordane and 1 mg/L of PCB's. Constituents or properties of well-water samples that exceeded SMCL's included iron, manganese, dissolved solids, pH, and corrosivity. Water from 70 (85 percent) of the 82 wells sampled contained radon-222 activities greater than the proposed MCL of

  6. Atrazine in Surface Water and Relation to Hydrologic Conditions Within the Delaware River Basin Pesticide Management Area, Northeast Kansas, July 1992 Through December 1994

    USGS Publications Warehouse

    Pope, Larry M.

    1995-01-01

    Since about 1960, atrazine has been used as an effective pre- and postemergent herbicide in the production of corn and grain sorghum. Atrazine is a triazine-class herbicide and was the most frequently detected herbicide in surface water of the lower Kansas River Basin of southeast Nebraska and northeast Kansas (Stamer and Zelt, 1994). Approximately 95 percent of the atrazine applied in the United States is used in corn and grain-sorghum production, predominately in the Mississippi River Basin where about 82 percent of the Nation's corn acreage is planted (CIBA-GEIGY Corp., 1992). Until recent changes in product labeling, atrazine commonly was applied at relatively high rates to control weeds around commercial and industrial areas and along railroad right-of-ways. Crop yields have increased during the last 40 years due in part to the use of herbicides in reducing weed growth and competition for moisture and nutrients. However, concern on the part of water suppliers, health officials, and the public also has increased regarding the safe and responsible use of herbicides. One issue is whether the widespread use of atrazine may pose a potential threat to public-water supplies in areas where the herbicide is used because of its ability to easily dissolve in water and its possible effects on the health of humans and aquatic life.

  7. Delaware Alternative Classifications

    ERIC Educational Resources Information Center

    Miller, Jay

    1975-01-01

    This article discusses the species designation and taxonomies of Delaware and Algonkian and presents eight classifications of taxa by form, habitat, color, movement, sound, use, relationship, and appearance. Relevant research is also reviewed. (CLK)

  8. A predictive model for anti-degradation monitoring of the Delaware River mainstem

    EPA Science Inventory

    The non-tidal portion of the Delaware River can be considered to be in minimally disturbed condition, but there is increasing pressure on the watershed. Thus, the primary goal of this research was to develop a monitoring tool that can be used by the Delaware River Basin Commissi...

  9. Distributed Leadership in Delaware

    ERIC Educational Resources Information Center

    Buttram, Joan L.; Pizzini, Eric

    2009-01-01

    The Delaware Education Research and Development Center (DERDC) conducted a two-part study to determine the impacts of this program on participating schools in the state. In the first part, DERDC interviewed a sample of administrators and teachers from 6 of the 15 participating schools. Their responses helped design a survey that was administered…

  10. Delaware and SREB

    ERIC Educational Resources Information Center

    Southern Regional Education Board (SREB), 2009

    2009-01-01

    The Southern Regional Education Board (SREB) is a nonprofit organization that works collaboratively with Delaware and 15 other member states to improve education at every level--from pre-K to postdoctoral study--through many effective programs and initiatives. SREB's "Challenge to Lead Goals for Education", which calls for the region to lead the…

  11. The Perceived Readiness of the Graduates of Delaware State University to Transition into the Workforce

    ERIC Educational Resources Information Center

    Scott-Cheatham, Lawita Germaine

    2013-01-01

    This study was designed to explore the perceived readiness of the graduating seniors at Delaware State University to transition from the classroom into the workforce. Delaware State University's undergraduate graduating class of 2012, 547 undergraduate seniors, were invited to participate in an online survey comprised of 23 items--derived…

  12. DELAWARE ESTUARY A MANAGEMENT PLAN FOR THE DELAWARE ESTUARY

    EPA Science Inventory

    Wise conservation and management of the Delaware Estuary is arguably the most important cooperative environmental initiative ever jointly undertaken by the States of New Jersey, Pennsylvania, and Delaware. While much has been accomplished over the past few decades to improve wate...

  13. Transportability Class of Americium in K Basin Sludge under Ambient and Hydrothermal Processing Conditions

    SciTech Connect

    Delegard, Calvin H.; Schmitt, Bruce E.; Schmidt, Andrew J.

    2006-08-01

    This report establishes the technical bases for using a ''slow uptake'' instead of a ''moderate uptake'' transportability class for americium-241 (241Am) for the K Basin Sludge Treatment Project (STP) dose consequence analysis. Slow uptake classes are used for most uranium and plutonium oxides. A moderate uptake class has been used in prior STP analyses for 241Am based on the properties of separated 241Am and its associated oxide. However, when 241Am exists as an ingrown progeny (and as a small mass fraction) within plutonium mixtures, it is appropriate to assign transportability factors of the predominant plutonium mixtures (typically slow) to the Am241. It is argued that the transportability factor for 241Am in sludge likewise should be slow because it exists as a small mass fraction as the ingrown progeny within the uranium oxide in sludge. In this report, the transportability class assignment for 241Am is underpinned with radiochemical characterization data on K Basin sludge and with studies conducted with other irradiated fuel exposed to elevated temperatures and conditions similar to the STP. Key findings and conclusions from evaluation of the characterization data and published literature are summarized here. Plutonium and 241Am make up very small fractions of the uranium within the K Basin sludge matrix. Plutonium is present at about 1 atom per 500 atoms of uranium and 241Am at about 1 atom per 19000 of uranium. Plutonium and americium are found to remain with uranium in the solid phase in all of the {approx}60 samples taken and analyzed from various sources of K Basin sludge. The uranium-specific concentrations of plutonium and americium also remain approximately constant over a uranium concentration range (in the dry sludge solids) from 0.2 to 94 wt%, a factor of {approx}460. This invariability demonstrates that 241Am does not partition from the uranium or plutonium fraction for any characterized sludge matrix. Most of the K Basin sludge characterization

  14. A Decision Support Framework for Water Management inthe Upper Delaware River

    USGS Publications Warehouse

    Bovee, Ken D.; Waddle, Terry J.; Bartholow, John; Burris, Lucy

    2007-01-01

    Introduction The Delaware River Basin occupies an area of 12,765 square miles, in portions of south central New York, northeast Pennsylvania, northeast Delaware, and western New Jersey (fig. 1). The river begins as two streams in the Catskill Mountains, the East and West Branches. The two tributaries flow in a southwesterly direction until they meet at Hancock, N.Y. The length of the river from the mouth of Delaware Bay to the confluence at Hancock is 331 miles. Approximately 200 miles of the river between Hancock, N.Y., and Trenton, N.J., is nontidal.

  15. Identifying baldcypress-water tupelo regeneration classes in forested wetlands of the Atchafalaya Basin, Louisiana

    USGS Publications Warehouse

    Faulkner, Stephen P.; Bhattarai, Prajwol; Allen, Yvonne C.; Barras, John A.; Constant, Glenn C.

    2009-01-01

    Baldcypress-water tupelo (cypress-tupelo) swamps are critically important coastal forested wetlands found throughout the southeastern U.S. The long-term survival and sustainability of these swamp forests is unknown due to large-scale changes in hydrologic regimes that prevent natural regeneration following logging or mortality. We used NWI wetland maps and remotely sensed hydrologic data to map cypress-tupelo communities, surface water, and the extent and location of proposed regeneration condition classes for cypress-tupelo swamps in the Atchafalaya Basin, LA. Only 6,175 ha (5.8%) of the 106,227 ha of cypress-tupelo forest in the Lower Atchafalaya Basin Floodway was classified as capable of naturally regenerating. Over 23% (24,525 ha) of the forest area was mapped as unable to regenerate either naturally or artificially. The loss and conversion of nearly 25,000 ha of cypress-tupelo forest would have significant and long-lasting impacts on ecosystem services such as wildlife habitat for birds and Louisiana black bears. Given the landscape-scale changes in surface elevations and flooding depths and durations throughout southern Louisiana, similar conditions and impacts are likely applicable to all coastal cypress-tupelo forests in Louisiana. Better data on flooding during the growing season are needed to more accurately identify and refine the location and spatial extent of the regeneration condition classes.

  16. Preliminary report on fluid inclusions from halites in the Castile and lower Salado formations of the Delaware Basin, southeastern New Mexico. [Freezing-point depression

    SciTech Connect

    Stein, C.L.

    1985-09-01

    A suite of samples composed primarily of halite from the upper Castile and lower Salado Formations of the Permian Basin was selected from Waste Isolation Pilot Plant (WIPP) core for a reconnaissance study of fluid inclusions. Volume percent of these trapped fluids averaged 0.7% to 1%. Freezing-point depressions varied widely and appeared to be unrelated to fluid-inclusion type, to sedimentary facies, or to stratigraphic depth. However, because very low freezing points were usually associated with anhydrite, a relation may exist between freezing-point data and lithology. Dissolved sulfate values were constant through the Castile, then decreased markedly with lesser depth in the lower Salado. This trend correlates very well with observed mineralogy and is consistent with an interpretation of the occurrence of secondary polyhalite as a result of gypsum or anhydrite alteration with simultaneous consumption of dissolved sulfate from the coexisting fluids. Together with the abundance and distribution of fluid inclusions in primary or ''hopper'' crystal structures, this evidence suggests that inclusions seen in these halites did not migrate any significant geographical distance since their formation. 28 refs., 17 figs., 2 tabs.

  17. The role of run-of-river impoundments in CO2 and CH4 emissions from floodplains of the Delaware Piedmont, Christina River Basin Critical Zone Observatory

    NASA Astrophysics Data System (ADS)

    Pearson, A.; Pizzuto, J. E.; Vargas, R.

    2014-12-01

    There is strong interest in understanding how run-of-river impoundments affect streams and their floodplains. Most recent work has focused on the fate of sediment within these dammed systems both past and current, the geomorphic impacts associated with sediment, and issues associated with removing run-of-the-river dams. Here, we assess how run-of-river impoundments alter the floodplain effluxes of carbon dioxide (CO2), and methane (CH4). We sampled two pairs of floodplains on the Red Clay Creek (140 km2) located in the Christina River Basin Critical Zone Observatory. The floodplain pairs were centered on a current and a former location of a run-of-river dam (one floodplain upstream, one downstream of dam location). Each floodplain was subjected to a suite of measurements that included bi-weekly gas flux (CO2, CH4, and H2O), bi-weekly soil moisture and temperature, monthly biomass sampling, C/N ratio sampling from O and A horizons, and cores that constrain the total organic carbon and nitrogen at depth as well as provide a description of the stratigraphy. Preliminary findings show that all floodplains are sources of CH4 (0.18 - 1.12 nmol m-2s-1) and CO2 (0.42 - 3.12 µmol m-2s-1). Despite temporal variability, the upstream floodplains produce more CH4 and CO2 than downstream floodplains. Our results may suggest that run-of-the-river dams enhance release of carbon from floodplains into the atmosphere.

  18. Delaware River and Catskill Region Hydrologic Observatory

    NASA Astrophysics Data System (ADS)

    Bain, M. B.; Brutsaert, W. H.; Walter, M. T.; Degaetano, A. T.; Steenhuis, T. S.

    2004-12-01

    This poster presents the nationally unique opportunities for hydrology-based research in the Delaware River and Catskill Mountain (DelCat) Region. The DelCat region encompasses all of the Delaware river Basin and the New York City Catskills' source watersheds. It has been a key water resource region prior to the founding of our country. This mountain-river-estuary hydrologic system together with other watersheds in the Catskills has supported the population and economic growth of major metropolitan areas of the early United States by providing water supply, land and forests, transportation, power generation, fisheries, recreation, and pollution elimination. The presentation is an account of a forthcoming effort designed to elicit support and participation. After greatly expanding the user and research community for the DelCat observatory, we will design the facility to serve a large user base interested in studies on a wide range of basic and applied hydrologic science topics and issues. Our current plans are to define the form of the hydrologic observatory, and to forecast the nature of what hydrologic sciences can achieve in the DelCat Region.

  19. Libraries in Delaware: MedlinePlus

    MedlinePlus

    ... this page: https://medlineplus.gov/libraries/delaware.html Libraries in Delaware To use the sharing features on this page, please enable JavaScript. Dover Dover Public Library 45 South State Street Dover, DE 19901 302- ...

  20. English Language Arts. Delaware Teachers' Desk Reference.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover.

    This document represents one section of the Delaware Teachers' Desk Reference to Standards and Performance Indicators for Curriculum Planning and Unit Development produced by the Delaware Department of Education. The Desk Reference is part of the Delaware Department of Education's ongoing efforts to provide assistance and support to local school…

  1. 33 CFR 117.716 - Delaware River.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Delaware River. 117.716 Section... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements New Jersey § 117.716 Delaware River. The following requirements apply to all drawbridges across the Delaware River: (a) The draws of railroad bridges need not...

  2. 33 CFR 117.716 - Delaware River.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Delaware River. 117.716 Section... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements New Jersey § 117.716 Delaware River. The following requirements apply to all drawbridges across the Delaware River: (a) The draws of railroad bridges need not...

  3. 33 CFR 117.716 - Delaware River.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Delaware River. 117.716 Section... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements New Jersey § 117.716 Delaware River. The following requirements apply to all drawbridges across the Delaware River: (a) The draws of railroad bridges need not...

  4. 33 CFR 117.716 - Delaware River.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Delaware River. 117.716 Section... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements New Jersey § 117.716 Delaware River. The following requirements apply to all drawbridges across the Delaware River: (a) The draws of railroad bridges need not...

  5. New School of Management, Delaware State University, Dover, Delaware.

    ERIC Educational Resources Information Center

    Design Cost Data, 2001

    2001-01-01

    Presents features of Delaware State University's New School of Management designed to stimulate positive gains in teaching and learning. The design incorporates state of the art distance learning systems that includes a 350-seat auditorium possessing the same capability, and a commercial kitchen and dining facility for chef and hotel management…

  6. Archaeology in Delaware. Pupil's Guide.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover.

    The archeology of Delaware, for all practical purposes meaning Indian prehistory, is the focus of this set consisting of teacher's and pupil's guides. Intended primarily for use at the fourth grade level, the material can successfully be adapted for use in grades 5 through 8. The teacher's guide is flexible and non-structured, allowing for…

  7. ANALYSIS OF LANDSCAPE AND WATER QUALITY IN THE NEW YORK CATSKILL - DELAWARE WATERSHED (1973-1998)

    EPA Science Inventory

    The primary goal of this study is to improve risk assessment through the development of methods and tools for characterization of landscape and water resource change. Exploring the relationship between landscape pattern and water quality in the Catskill-Delaware basins will impro...

  8. 1. NORTHWEST OBLIQUE AERIAL VIEW OF FORT DELAWARE AND PEA ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. NORTHWEST OBLIQUE AERIAL VIEW OF FORT DELAWARE AND PEA PATCH ISLAND. REMAINS OF SEA WALL VISIBLE IN FOREGROUND AND RIGHT OF IMAGE. - Fort Delaware, Sea Wall, Pea Patch Island, Delaware City, New Castle County, DE

  9. NORTHWEST OBLIQUE AERIAL VIEW OF FORT DELAWARE AND PEA PATCH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    NORTHWEST OBLIQUE AERIAL VIEW OF FORT DELAWARE AND PEA PATCH ISLAND. REMAINS OF SEA WALL VISIBLE IN FOREGROUND AND RIGHT OF IMAGE - Fort Delaware, Pea Patch Island, Delaware City, New Castle County, DE

  10. World class Devonian potential seen in eastern Madre de Dios basin

    SciTech Connect

    Peters, K.E.; Wagner, J.B.; Carpenter, D.G.; Conrad, K.T.

    1997-02-17

    The Madre de Dios basin in northern Bolivia contains thick, laterally extensive, organic-rich Upper Devonian source rocks that reached the oil-generative stage of thermal maturity after trap and seal formation. Despite these facts, less than one dozen exploration wells have been drilled in the Madre de Dios basin, and no significant reserves have been discovered. Mobil geoscientists conducted a regional geological, geophysical, and geochemical study of the Madre de Dios basin. The work reported here was designed to assess the distribution, richness, depositional environment, and thermal maturity of Devonian source rocks. It is supported by data from over 3,000 m of continuous slimhole core in two of the five Mobil wells in the basin. Source potential also exists in Cretaceous, Mississippian, and Permian intervals. The results of this study have important implications for future exploration in Bolivia and Peru.

  11. University of Delaware Energy Institute

    SciTech Connect

    Klein, Michael T

    2012-09-30

    The main goal of this project funded through this DOE grant is to help in the establishment of the University of Delaware Energy Institute (UDEI) which is designed to be a long-term, on-going project. The broad mission of UDEI is to develop collaborative programs encouraging research activities in the new and emerging energy technologies and to partner with industry and government in meeting the challenges posed by the nation's pressing energy needs.

  12. Delaware's Dropouts: 1989-1990.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover, Div. of Research and Evaluation.

    Delaware annually collects information from the state's secondary schools concerning students who drop out of school. The findings for the 1989-1990 school year revealed that, out of an enrollment of 27,109 students, 1,801 students in grades 9 through 12 left school. The statewide annual dropout rate declined (6.6% versus 7.3% the previous year).…

  13. Advanced Oil Recovery Technologies for Improved Recovery from Slope Basin Clastic Reservoirs, Nash Draw Brushy Canyon Pool, Eddy County, New Mexico, Class III

    SciTech Connect

    Murphy, Mark B.

    2000-10-25

    The Nash Draw Brushy Canyon Pool (NDP) is southeast New Mexico is one of the nine projects selected in 1995 by the U.S. Department of Energy (DOE) for participation in the Class III Reservoir Field Demonstration Program. The goals of the DOE cost-shared Class Program are to: (1) extend economic production, (2) increase ultimate recovery, and (3) broaden information exchange and technology application. Reservoirs in the Class III Program are focused on slope-basin and deep-basin clastic depositional types.

  14. 76 FR 62132 - Delaware Disaster #DE-00009

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-06

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION Delaware Disaster DE-00009 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a notice of an Administrative declaration of a disaster for the State of Delaware dated...

  15. 50 CFR 32.27 - Delaware.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 8 2011-10-01 2011-10-01 false Delaware. 32.27 Section 32.27 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) THE NATIONAL WILDLIFE REFUGE SYSTEM HUNTING AND FISHING Refuge-Specific Regulations for Hunting and Fishing § 32.27 Delaware. The following refuge units...

  16. 40 CFR 81.308 - Delaware.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 18 2012-07-01 2012-07-01 false Delaware. 81.308 Section 81.308 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.308 Delaware. Delaware—TSP Designated area Does not...

  17. State Education Finance and Governance Profile: Delaware

    ERIC Educational Resources Information Center

    Canon, Katherine

    2010-01-01

    This article presents the state education finance and governance of Delaware. Funding for public education generally comes from three sources: the federal government (7.6%), the state government (64.3%), and local governments (28.1%). Educational expenditures for K-12 public schools in Delaware total $1.66 billion. Per-pupil expenditure in the…

  18. 33 CFR 117.716 - Delaware River.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Delaware River. 117.716 Section 117.716 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements New Jersey § 117.716 Delaware River. The following requirements apply to all drawbridges across...

  19. 33 CFR 80.503 - Delaware Bay.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Delaware Bay. 80.503 Section 80.503 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Fifth District § 80.503 Delaware Bay. A line drawn from Cape...

  20. 40 CFR 81.308 - Delaware.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.308 Delaware... classified Better than national standards City of Wilmington X Section within City of Newark bounded...

  1. 40 CFR 81.308 - Delaware.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.308 Delaware... classified Better than national standards City of Wilmington X Section within City of Newark bounded...

  2. Report of the River Master of the Delaware River for the period December 1, 2007-November 30, 2008

    USGS Publications Warehouse

    Krejmas, Bruce E.; Paulachok, Gary N.; Blanchard, Stephen F.

    2014-01-01

    A Decree of the Supreme Court of the United States, entered June 7, 1954, established the position of Delaware River Master within the U.S. Geological Survey (USGS). In addition, the Decree authorizes diversions of water from the Delaware River Basin and requires compensating releases from certain reservoirs, owned by New York City, to be made under the supervision and direction of the River Master. The Decree stipulates that the River Master will furnish reports to the Court, not less frequently than annually. This report is the 55th Annual Report of the River Master of the Delaware River. It covers the 2008 River Master report year, the period from December 1, 2007, to November 30, 2008. During the report year, precipitation in the upper Delaware River Basin was 49.79 inches (in.) or 114 percent of the 67 report-year average. Combined storage in Pepacton, Cannonsville, and Neversink Reservoirs remained high from December 2007 to May 2008. Reservoir storage decreased seasonally from June to late October, then increased gradually through the end of November. Delaware River operations during the year were conducted as stipulated by the Decree. Diversions from the Delaware River Basin by New York City and New Jersey were in full compliance with the Decree. Reservoir releases were made as directed by the River Master at rates designed to meet the flow objective for the Delaware River at Montague, New Jersey, on 107 days during the report year. Releases were made at conservation rates—rates designed to relieve thermal stress and protect the fishery and aquatic habitat in the tailwaters of the reservoirs—on all other days. During the report year, New York City and New Jersey complied fully with the terms of the Decree, and directives and requests of the River Master. As part of a long-term program, the quality of water in the Delaware Estuary between Trenton, New Jersey, and Reedy Island Jetty, Delaware, was monitored at various locations. Data on water temperature

  3. The world-class Jinding Zn-Pb deposit: ore formation in an evaporite dome, Lanping Basin, Yunnan, China

    NASA Astrophysics Data System (ADS)

    Leach, David L.; Song, Yu-Cai; Hou, Zeng-Qian

    2016-07-01

    The Jinding Zn-Pb sediment-hosted deposit in western Yunnan, China, is the fourth largest Zn deposit in Asia. Based on field observations of the ore textures, breccias, and the sandstone host rocks, the ores formed in a dome that was created by the diapiric migration of evaporites in the Lanping Basin during Paleogene deformation and thrust loading. Most of the ore occurs in sandstones that are interpreted to be a former evaporite glacier containing a mélange of extruded diapiric material, including breccias, fluidized sand, and evaporites that mixed with sediment from a fluvial sandstone system. A pre-ore hydrocarbon and reduced sulfur reservoir formed in the evaporite glacier that became the chemical sink for Zn and Pb in a crustal-derived metalliferous fluid. In stark contrast to previous models, the Jinding deposit does not define a unique class of ore deposits; rather, it should be classified as MVT sub-type hosted in a diapiric environment. Given that Jinding is a world-class ore body, this new interpretation elevates the exploration potential for Zn-Pb deposit in other diapir regions in the world.

  4. Application of automated multispectral analysis to Delaware's coastal vegetation mapping

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Daiber, D.; Bartlett, D. S.; Crichton, O. W.; Fornes, A. O.

    1973-01-01

    There are no author-identified significant results in this report. Overlay maps of Delaware's wetlands have been prepared, showing the dominant species or group of species of vegetation present. Five such categories of vegetation were used indicating marshes dominated by: (1) salt marsh cord grass; (2) salt marsh hay and spike grass; (3) reed grass; (4) high tide bush and sea myrtle; and (5) a group of fresh water species found in impounded areas built to attract water fowl. Fifteen such maps cover Delaware's wetlands from the Pennsylvania to the Maryland borders. The mapping technique employed utilizes the General Electric multispectral data processing system. This system is a hybrid analog-digital system designed as an analysis tool to be used by an operator whose own judgment and knowledge of ground truth can be incorporated at any time into the analyzing process. The result is a high speed, cost effective method for producing enhanced photomaps showing a number of spectral classes, each enhanced spectral class being representative of a vegetative species or group of species.

  5. 78 FR 14060 - Television Broadcasting Services; Seaford, Delaware and Dover, Delaware

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-04

    ... station WMDE(TV), Channel 5, Seaford, Delaware, requesting an amendment of the DTV Table of Allotments to... modification of WMDE(TV)'s construction permit to specify Dover, Delaware as the station's community license... Channel 5 to Dover is based on the technical specifications currently authorized for WMDE(TV),...

  6. Report of the River Master of the Delaware River for the period December 1, 1983 - November 30, 1984

    USGS Publications Warehouse

    Schaefer, F.T.; Harkness, W.E.; Baebenroth, R.W.; Speight, D.W.

    1985-01-01

    A Decree of the U.S. Supreme Court in 1954 established the position of Delaware River Master. The Decree authorizes diversions of water from the Delaware River basin and requires compensating releases from certain reservoirs of the City of New York to be made under the supervision and direction of the River Master. Reports to the Court, not less frequently than annually were stipulated. During the 1984 report year, December 1, 1983 to November 30, 1984, precipitation and runoff varied from above average to below average in the Delaware River basin. For the year as a whole, precipitation and runoff were near average. Operations were under a status of drought warning December 1, 1983; however, the above normal precipitation the first half of the year increased storage in the reservoirs to record levels by June 1, 1984. Below normal precipitation from August to November coupled with large releases to maintain the Montague flow objective and customary diversions for water supply reduced storage in the reservoirs to the drought-warning level by November 27. Diversions from the Delaware River basin by New York City and New Jersey conformed to the terms of the Amended Decree throughout the year. Releases were made as directed by the River Master at rates designed to meet the Montague flow objective on 127 days between June 23 and November 30. Releases were made at conservation rates or at rates designed to relieve thermal stress in the streams downstream from the reservoirs at other times. (USGS)

  7. Flood of April 2-4, 2005, Delaware River Main Stem from Port Jervis, New York, to Cinnaminson, New Jersey

    USGS Publications Warehouse

    Reed, Timothy J.; Protz, Amy R.

    2007-01-01

    Several conditions, including saturated soils, snowmelt, and heavy rains, caused flooding on the Delaware River on April 2-4, 2005. The event occurred 50 years after the historic 1955 Delaware River flood, and only six months after a smaller but equally notable flood on September 18-19, 2004. The Delaware River flooded for a third time in 22 months in June, 2006. The peak flows and elevations of the 2005 flood were similar to those on June 28-29, 2006. The following report describes the April 2-4, 2005, Delaware River flood, and includes the associated precipitation amounts, peak flows and elevations, and flood frequencies. A comparison of historic Delaware River floods also is presented. The appendix of the report contains detailed information for 156 high-water mark elevations obtained on the main stem of the Delaware River from Port Jervis, New York, to Cinnaminson, New Jersey, for the April 2-4, 2005 flood. The April 2005 event originated with frequent precipitation from December 2004 to March 2005 which saturated the soils in the upper Delaware River Basin. The cold winter froze some of the soils and left a snowpack at higher elevations equivalent to as much as 10 inches of water in some areas. Temperatures rose above freezing, and heavy rains averaging 1 to 3 inches on March 27, 2005, melted some of the snow, causing the Delaware River to rise; however, peak elevations were still 2 to 7 feet below flood stage. Another round of rainfall averaging 2-5 inches in the basin on April 2, 2005, melted the remaining snowpack. The combination of snowmelt and runoff from the two storms produced flood conditions along the main stem of the Delaware River. Flood frequencies of flows at selected tributaries to the Delaware River did not exceed the 35-year recurrence intervals. The Delaware River main stem peak-flow recurrence intervals ranged from 40 to 80 years; flows were approximately 20 percent less than those from the peak of record in 1955. Peak elevations exceeded

  8. 5. ISLAND ROAD BRIDGE. COLWYN, DELAWARE CO., PA. Sec. 1101, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. ISLAND ROAD BRIDGE. COLWYN, DELAWARE CO., PA. Sec. 1101, MP 5.58. - Northeast Railroad Corridor, Amtrak route between Delaware-Pennsylvania & Pennsylvania-New Jersey state lines, Philadelphia, Philadelphia County, PA

  9. 4. COBBS CREEK BRIDGE. COLWYN, DELAWARE CO., PA. Sec. 1101, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. COBBS CREEK BRIDGE. COLWYN, DELAWARE CO., PA. Sec. 1101, MP 5.73 - Northeast Railroad Corridor, Amtrak route between Delaware-Pennsylvania & Pennsylvania-New Jersey state lines, Philadelphia, Philadelphia County, PA

  10. Delaware County Community College Business and International Education Program.

    ERIC Educational Resources Information Center

    Delaware County Community Coll., Media, PA.

    In 1987, Delaware County Community College (DCCC) initiated the Delaware Valley Trade Enhancement Project, comprising a number of activities to promote the involvement of local firms in international trade. One of the first activities of the Delaware Valley Trade Enhancement project was a survey of over 6,000 small and medium-sized businesses in…

  11. 78 FR 42010 - Drawbridge Operation Regulation; Delaware River, NJ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-15

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Delaware River, NJ AGENCY: Coast...-Palmyra Bridge (Route 73), across the Delaware River, mile 107.2, between the townships of Tacony, PA and... 107.2, across the Delaware River, between PA and NJ, has a vertical clearance in the closed...

  12. 33 CFR 165.511 - Security Zone; Atlantic Ocean, Chesapeake & Delaware Canal, Delaware Bay, Delaware River and its...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... escorted passenger vessels in the Captain of the Port, Delaware Bay zone as defined in 33 CFR 3.25-05. (b... vessel in order to ensure safe passage in accordance with the Navigation Rules as seen in 33 CFR chapter... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Security Zone; Atlantic...

  13. 33 CFR 165.511 - Security Zone; Atlantic Ocean, Chesapeake & Delaware Canal, Delaware Bay, Delaware River and its...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... escorted passenger vessels in the Captain of the Port, Delaware Bay zone as defined in 33 CFR 3.25-05. (b... vessel in order to ensure safe passage in accordance with the Navigation Rules as seen in 33 CFR chapter... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Atlantic...

  14. 33 CFR 165.511 - Security Zone; Atlantic Ocean, Chesapeake & Delaware Canal, Delaware Bay, Delaware River and its...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... escorted passenger vessels in the Captain of the Port, Delaware Bay zone as defined in 33 CFR 3.25-05. (b... vessel in order to ensure safe passage in accordance with the Navigation Rules as seen in 33 CFR chapter... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Security Zone; Atlantic...

  15. 33 CFR 165.511 - Security Zone; Atlantic Ocean, Chesapeake & Delaware Canal, Delaware Bay, Delaware River and its...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... escorted passenger vessels in the Captain of the Port, Delaware Bay zone as defined in 33 CFR 3.25-05. (b... vessel in order to ensure safe passage in accordance with the Navigation Rules as seen in 33 CFR chapter... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Security Zone; Atlantic...

  16. 33 CFR 165.511 - Security Zone; Atlantic Ocean, Chesapeake & Delaware Canal, Delaware Bay, Delaware River and its...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... escorted passenger vessels in the Captain of the Port, Delaware Bay zone as defined in 33 CFR 3.25-05. (b... vessel in order to ensure safe passage in accordance with the Navigation Rules as seen in 33 CFR chapter... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Security Zone; Atlantic...

  17. Delaware Early Learning Foundations for School Success.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover.

    Recognizing that children's earliest years are critical, stakeholders in Delaware have joined together to define what types of experiences children should ideally have before they enter kindergarten. A statewide committee with policymakers, parents, and representatives from the early care and education community, schools, higher education, and…

  18. DELAWARE ESTUARY PROGRAM IMPLEMENTATION STREAMLINE REVIEW, 2002

    EPA Science Inventory

    The primary purpose of the Delaware Estuary Program implementation review (formerly known as the biennial review) has been to assist EPA in. making funding decisions for those NEPs that are in the post-CCMP, or implementation, phase, and to evaluate implementation progress. The i...

  19. Subgroup Achievement and Gap Trends: Delaware

    ERIC Educational Resources Information Center

    Center on Education Policy, 2010

    2010-01-01

    In grade 8 (the only grade in which subgroup trends were analyzed by achievement level), Delaware students showed consistent gains in math at the basic, proficient, and advanced levels for racial/ethnic subgroups, low income students, and boys and girls. There were mixed results in reading. Achievement gaps narrowed in both reading and math in…

  20. 77 FR 71667 - Delaware Disaster #DE-00014

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-03

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION Delaware Disaster DE-00014 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a Notice of the Presidential declaration of a major disaster for Public Assistance Only for...

  1. 76 FR 63700 - Delaware Disaster #DE-00010

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-13

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION Delaware Disaster DE-00010 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a Notice of the Presidential declaration of a major disaster for Public Assistance Only for...

  2. 75 FR 18245 - Delaware Disaster # DE-00007

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-09

    ... From the Federal Register Online via the Government Publishing Office SMALL BUSINESS ADMINISTRATION Delaware Disaster DE-00007 AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a Notice of the Presidential declaration of a major disaster for Public Assistance Only for...

  3. 40 CFR 81.308 - Delaware.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.308 Delaware... classified Better than national standards City of Wilmington X Section within City of Newark bounded by...-Wilmington-Atlantic City, PA-NJ-MD-DE: 2 New Castle County Nonattainment Marginal. Seaford: 2 Sussex...

  4. 40 CFR 81.308 - Delaware.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... AREAS FOR AIR QUALITY PLANNING PURPOSES Section 107 Attainment Status Designations § 81.308 Delaware... classified Better than national standards City of Wilmington X Section within City of Newark bounded by... Type Classification Date 1 Type Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE: 2 New Castle...

  5. The Geology of Delaware Coastal Environments.

    ERIC Educational Resources Information Center

    Lewis, Robert E.

    This teachers' manual provides model classroom lessons in earth science. It is specially designed to be used with John C. Kraft's A GUIDE TO THE GEOLOGY OF DELAWARE'S COASTAL ENVIRONMENT. The lessons suggest an approach for using the guide in the science classroom and in field studies. The manual can be used as a complete unit, or individual…

  6. Kids Count in Delaware: Fact Book, 1995.

    ERIC Educational Resources Information Center

    Delaware Univ., Newark. Kids Count in Delaware.

    This Kids Count fact book examines statewide trends in the well-being of Delaware's children. The statistical portrait is based on key indicators in four areas: single-parent families, births to teenage mothers, juvenile crime and violence, and education. Following brief sections on the state's demographics and economic status, the fact book…

  7. Testing the Delaware sand filter's effectiveness for treating stormwater runoff

    SciTech Connect

    Leszczynska, D.; Dzurik, A.

    1998-07-01

    The use of the Delaware Sand Filter for treatment of ultra-urban stormwater is investigated for Florida applications. An experimental Delaware filter is designed in conjunction with a typical sand filter as part of a street improvement project in Tallahassee, Florida. The design allows for testing of different filter media in an attempt to determine the suitability of the Delaware Sand Filter in hot climates with numerous heavy rainfall episodes.

  8. 1. DELAWARE AVE. (right, looking north) AND WASHINGTON AVE. SHOWING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. DELAWARE AVE. (right, looking north) AND WASHINGTON AVE. SHOWING GLORIA DEI CHURCH (note steeple) - Independence National Historical Park, Walnut, Sixth, Chestnut & Second Streets, Philadelphia, Philadelphia County, PA

  9. 6. Northeast elevation of single bin. Delaware, Lackawanna & ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. Northeast elevation of single bin. - Delaware, Lackawanna & Western Railroad, Scranton Yards, Scrap Platform, 350 feet South of South Washington Avenue & River Street, Scranton, Lackawanna County, PA

  10. 4. Perspective view of platform, looking northeast. Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Perspective view of platform, looking northeast. - Delaware, Lackawanna & Western Railroad, Scranton Yards, Scrap Platform, 350 feet South of South Washington Avenue & River Street, Scranton, Lackawanna County, PA

  11. 4. VIEW EAST, WEST ELEVATION Delaware, Lackawanna & Western ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. VIEW EAST, WEST ELEVATION - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  12. 18. DETAIL, INSPECTION PIT Delaware, Lackawanna & Western Railroad ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. DETAIL, INSPECTION PIT - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  13. 22. DETAIL, WOOD BLOCK FLOOR Delaware, Lackawanna & Western ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. DETAIL, WOOD BLOCK FLOOR - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  14. 1. VIEW SOUTH, NORTH ELEVATION Delaware, Lackawanna & Western ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. VIEW SOUTH, NORTH ELEVATION - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  15. 12. DETAIL, TYPICAL WINDOW BAY Delaware, Lackawanna & Western ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. DETAIL, TYPICAL WINDOW BAY - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  16. 2. VIEW NORTH, SOUTH ELEVATION Delaware, Lackawanna & Western ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW NORTH, SOUTH ELEVATION - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  17. 3. VIEW WEST, EAST ELEVATION Delaware, Lackawanna & Western ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. VIEW WEST, EAST ELEVATION - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  18. 19. DETAIL, OVERHEAD CATWALK Delaware, Lackawanna & Western Railroad ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    19. DETAIL, OVERHEAD CATWALK - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  19. Lessons Learned from Delaware State University

    ERIC Educational Resources Information Center

    Overton, James T.

    2008-01-01

    The unfortunate events at Delaware State University (DSU) on September 21, 2007, were a whirlwind of emotions for everyone at DSU. At 12:54 a.m. Friday morning, a gunman (one of its students) shot two students who were leaving the on-campus cafe. Tragically, the female victim died one month later as a result of her injuries. As the Chief of Police…

  20. Concentrations and transport of atrazine in the Delaware River-Perry Lake system, northeast Kansas, July 1992 through September 1995

    USGS Publications Warehouse

    Pope, Larry M.; Brewer, Lesley D.; Foley, Greg A.; Morgan, Scott C.

    1997-01-01

    About 283,000 pounds of atrazine are applied annually in the 1,100-square-mile Delaware River basin. Of this amount, an annual average of 3,500 pounds runs off into Perry Lake, a public-water supply source and main reservoir in the basin. About 90 percent of the atrazine that runs off to streams occurs between May and July. However, annual average concentrations did not exceed the maximum contaminant level in water from any of 10 stream sites or the outflow of Perry Lake for either the 1993 or 1994 crop years.

  1. Evaluating temporal changes in stream condition in three New Jersey rive basins by using an index of biotic integrity

    USGS Publications Warehouse

    Chang, Ming; Kennen, Jonathan G.; Del Corso, Ellyn

    2000-01-01

    An index of biotic integrity (!B!) modified for New Jersey streams was used to compare changes in stream condition from the 1970s to the 1990s in Delaware, Passaic, and Raritan River Basins. Stream condition was assessed at 88 sampling locations. Mean IBI scores for all basins increased from the 1970s to the 1990s, but the stream-condition category improved (from fair to good) only for the Delaware River Basin. The number of benthic insectivores and the proportion of insectivorous cyprinds increased in all three basins; however, the number of white suckers decreased significantly only in the Delaware River Basin. Results of linear-regression analysis indicate a significant correlation between the percentage of altered land in the basin and change in IBI score (1970s to 1990s) for Delaware River sites. Results of analysis of variance of the rank-transformed IBI scores for the 1970s and 1990s indicate that the three basins was equal in the 1970s. Results of a multiple-comparison test demonstrated that the 1990s IBI values for the Delaware River Basin differed significantly from those for the Passaic and Raritan River Basins. Many factors, such as the imposition of the more stringent standards on water-water and industrial discharges during the 1980s and changes in land-use practices, likely contributed to the change in the Delaware River Basin. A general increase in IBI values for the Passaic, Raritan, and Delaware River Basins over the past 25 years appears to reflect overall improvements in water quality.

  2. Delaware Education State Report Card, 2005-2006

    ERIC Educational Resources Information Center

    Delaware Department of Education, 2007

    2007-01-01

    This report, submitted to the U.S. Department of Education, contains summary details of Delaware students' growth in the areas of reading, mathematics, writing, science and social studies. The results reported herein are part of a long-term effort to gather data on Delaware students' educational progress and use the data to inform decisions about…

  3. 33 CFR 110.157 - Delaware Bay and River.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Delaware Bay and River. 110.157 Section 110.157 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Anchorage Grounds § 110.157 Delaware Bay and River. (a) The anchorage grounds—(1) Anchorage A off the entrance to...

  4. Alcoholic Beverage Buying Habits of University of Delaware Students

    ERIC Educational Resources Information Center

    Newton, John P.

    1978-01-01

    Goal of study was comparing alcoholic beverage buying habits of University of Delaware students with those of students at other colleges. Random sample of 639 was drawn from 13,000 undergraduates and interviews conducted. Drinking at Delaware was similar to that at other schools. Seniors spent significantly more on alcohol than freshmen. (Author)

  5. Delaware Pushes to Meet Race to Top Promises

    ERIC Educational Resources Information Center

    McNeil, Michele

    2011-01-01

    This article reports on how Delaware pushes to meet Race to the Top promises. The Delcastle Technical High School teachers are on the front lines of the push to deliver on promises that last year won Delaware, 10 other states, and the District of Columbia shares of the Race to the Top pie, the $4 billion competition that is driving much of the…

  6. Institutional Liability for Fraternity Hazing: Furek v. University of Delaware.

    ERIC Educational Resources Information Center

    Richmond, Douglas R.

    1989-01-01

    Institutional responsibility for hazing injuries was called into question in a Delaware Superior Court in the case of "Furek v. University of Delaware." In ruling in the university's favor, the court signaled that universities may move to eliminate hazing without unreasonable fear of creating institutional liability for hazing incidents. (MLF)

  7. The Early Years of Watomika (James Bouchard): Delaware and Jesuit.

    ERIC Educational Resources Information Center

    Miller, Jay

    1989-01-01

    Publishes and critiques the 1855 autobiography of Jesuit Father James Bouchard, born and raised a Delaware named Watomika. Contains information about Watomika's family, genealogy, and early years; his conversion to Christianity; and Delaware religious beliefs and practices. Examines the literary and ethnographic merits of the autobiography. (SV)

  8. Career Education Resource Bibliography: Delaware's Occupational-Vocational Education Model.

    ERIC Educational Resources Information Center

    Milford Special School District, DE.

    This bibliography lists professional books and instructional materials, concerning aspects of career education, for Delaware's Occupational-Vocational Education Model, at Milford, Delaware. Entries are arranged alphabetically by title under these categories: (1) Educational Theory, including theories relating to career development, child…

  9. Delaware Student Testing Program: A Score Results Guide for Parents.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

    This guide is intended to help parents understand the Delaware Student Testing Program (DSTP) and the reports it generates. The DSTP tests are administered to provide an accurate measure of how well students are doing relative to Delaware's rigorous content standards. DSTP tests are administered in reading, writing, mathematics, science, and…

  10. 77 FR 69490 - Delaware; Emergency and Related Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-19

    ... SECURITY Federal Emergency Management Agency Delaware; Emergency and Related Determinations AGENCY: Federal Emergency Management Agency, DHS. ACTION: Notice. SUMMARY: This is a notice of the Presidential declaration of an emergency for the State of Delaware (FEMA-3357-EM), dated October 29, 2012, and...

  11. 76 FR 60850 - Delaware; Emergency and Related Determinations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-30

    ... SECURITY Federal Emergency Management Agency Delaware; Emergency and Related Determinations AGENCY: Federal Emergency Management Agency, DHS. ACTION: Notice. SUMMARY: This is a notice of the Presidential declaration of an emergency for the State of Delaware (FEMA-3336-EM), dated August 28, 2011, and...

  12. Applications of remote-sensing technology to environmental problems of Delaware and Delaware Bay

    NASA Technical Reports Server (NTRS)

    Bartlett, D.; Klemas, V.; Philpot, W.; Rogers, R.

    1975-01-01

    Digital processing of multispectral LANDSAT data was used to develop a computerized model for predicting oil slick movement within the Delaware Bay. LANDSAT imagery was also used to monitor offshore waste disposal sites for mapping of wetlands, and charting of tidal currents.

  13. Kids Count in Delaware: Fact Book 1999 [and] Families Count in Delaware: Fact Book, 1999.

    ERIC Educational Resources Information Center

    Delaware Univ., Newark. Kids Count in Delaware.

    This Kids Count Fact Book is combined with the Families Count Fact Book to provide information on statewide trends affecting children and families in Delaware. The Kids Count statistical profile is based on 10 main indicators of child well-being: (1) births to teens; (2) low birth weight babies; (3) infant mortality; (4) child deaths; (5) teen…

  14. Kids Count in Delaware, Families Count in Delaware: Fact Book, 2002.

    ERIC Educational Resources Information Center

    Delaware Univ., Newark. Kids Count in Delaware.

    This Kids Count Fact Book is combined with the Families Count Fact Book to provide information on statewide trends affecting children and families in Delaware. The Kids Count statistical profile is based on 11 main indicators of child well-being: (1) births to teens 15-17 years; (2) births to teens 10 to 14 years; (3) low birth weight babies; (3)…

  15. Kids Count in Delaware, Families Count in Delaware: Fact Book, 2003.

    ERIC Educational Resources Information Center

    Delaware Univ., Newark. Kids Count in Delaware.

    This Kids Count Fact Book is combined with the Families Count Fact Book to provide information on statewide trends affecting children and families in Delaware. The Kids Count and Families Count indicators have been combined into four new categories: health and health behaviors, educational involvement and achievement, family environment and…

  16. 33 CFR 162.40 - Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware Canal).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware Canal). 162.40 Section 162.40 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY INLAND WATERWAYS NAVIGATION REGULATIONS...

  17. 33 CFR 207.100 - Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware Canal); use, administration, and navigation. 207.100 Section 207.100 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION...

  18. The Courts, the Legislature, and Delaware's Resegregation: A Report on School Segregation in Delaware, 1989-­2010

    ERIC Educational Resources Information Center

    Niemeyer, Arielle

    2014-01-01

    Delaware's history with school desegregation is complicated and contradictory. The state both advanced and impeded the goals of "Brown v. Board of Education." After implementing desegregation plans that were ineffective by design, Delaware was ultimately placed under the first metropolitan, multi-district desegregation court order in the…

  19. Application of ecological geological and oceanographic ERTS-1 imagery to Delaware's coastal resources planning

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator)

    1973-01-01

    The Author has identified the following significant results. Significant results obtained by analysis of digital ERTS-1 data are: (1) Statistical outputs indicating the reliability of discriminating eight coastal vegetation and land use classes on a given group of training sets included: (a) mean and standard deviation of response in each class chosen; (b) contribution tables indicating importance of each channel in discriminating each thematic class from the background; (c) scatter diagrams showing relationships of thematic spectral signatures in spectral space; and (d) classification table showing reliability (in percent) of identification of each thematic class. (2) Thematic color maps at a scale of 1:1,000,000 showing vegetation and land use categories for Delaware's entire coastal zone. (3) Thematic computer plots at specified smaller (i.e. 1:24,000) scales for comparison with existing map data such as U.S.G.S. topographic maps.

  20. 18 CFR 410.1 - Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 18 Conservation of Power and Water Resources 2 2014-04-01 2014-04-01 false Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations. 410.1 Section 410.1 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION ADMINISTRATIVE MANUAL BASIN REGULATIONS; WATER CODE AND ADMINISTRATIVE MANUAL-PART...

  1. Oxygen isotopic identity of the Delaware Coastal Current

    NASA Astrophysics Data System (ADS)

    Khim, Boo-Keun; Krantz, David E.

    1996-07-01

    Results are presented and discussed from a preliminary study on the oxygen isotopic composition of coastal and inner shelf waters from the Middle Atlantic Bight between the mouths of Delaware Bay and Chesapeake Bay. The water samples were collected during the spring, April/May 1993, in conjunction with a detailed hydrographic survey of the Delaware Coastal Current. The relationship between salinity and δ18O, both of which are generally accepted conservative properties of seawater, allows identification of the fresh and saline mixing end-members for the Delaware Coastal Current. The main source of freshwater to the Delaware Coastal Current is a mixture of runoff into Delaware Bay with an estimated δ18OS = 0 composition of -7.08‰. The freshwater input is dominated by Delaware River discharge with a mean δ18O of -8.0‰ based on previous studies; there appears to be a secondary contribution of freshwater that is isotopically heavier from coastal-plain drainage. The extrapolated δ18OS = 32.35 value (-0.93‰) of the saline component implies exchange with Middle Atlantic Bight Shelf Water through along-shelf and across-shelf mixing processes. Limited data suggest that the oxygen isotopic composition of low-salinity water exiting the Chesapeake Bay mouth is discernible compared with that of the Delaware Coastal Current.

  2. Divergent/passive margin basins

    SciTech Connect

    Edwards, J.D. ); Santogrossi, P.A. )

    1989-01-01

    This book discusses the detailed geology of the four divergent margin basins and establishes a set of analog scenarios which can be used for future petroleum exploration. The divergent margin basins are the Campos basin of Brazil, the Gabon basin, the Niger delta, and the basins of the northwest shelf of Australia. These four petroleum basins present a wide range of stratigraphic sequences and structural styles that represent the diverse evolution of this large and important class of world petroleum basins.

  3. Increased Oil Production and Reserves from Improved Completion Techniques in the Bluebell Field, Uinta Basin, Utah, Class I

    SciTech Connect

    Morgan, Craig D.; Gwynn, Wallace; Deo, Milind D.; Jarrard, Richard; Curtice, Richard; Morris, Thomas H.; Smouse, DeForrest; Tripp, Carol N.

    2000-01-20

    The objective of this project was to increase oil production and reserves by the use of improved reservoir characterization and completion techniques in the Unita Basin Utah. To accomplish this objective, a two-year geologic and engineering characterization of the Bluebell field was conducted. The study evaluated surface and subsurface data, currently used completion techniques, and common production problems. It was determined that advanced case- and open-hole logs could be effective in determining productive beds and that staged-interval (about 500 ft [150 m] per stage) and bed-scale isolation completion techniques could result in improved well performance.

  4. Late Paleozoic structural evolution of Permian basin

    SciTech Connect

    Ewing, T.E.

    1984-04-01

    The southern Permian basin is underlain by the NNW-trending Central Basin disturbed belt of Wolfcamp age (Lower Permian), the deep Delaware basin to its west, and the shallower Midland basin to its eat. The disturbed belt is highly segmented with zones of left-lateral offset. Major segments from south to north are: the Puckett-Grey Ranch zone; the Fort Stockton uplift; the Monahans transverse zone; the Andector ridges and the Eunice ridge; the Hobbs transverse zone; and the Tatum ridges, which abut the broad Roosevelt uplift to the north. The disturbed belt may have originated along rift zones of either Precambrian or Cambrian age. The extent of Lower and Middle Pennsylvanian deformation is unclear; much of the Val Verde basin-Ozona arch structure may have formed then. The main Wolfcamp deformation over thrust the West Texas crustal block against the Delaware block, with local denudation of the uplifted edge and eastward-directed backthrusting into the Midland basin. Latter in the Permian, the area was the center of a subcontinental bowl of subsidence - the Permian basin proper. The disturbed belt formed a pedestal for the carbonate accumulations which created the Central Basin platform. The major pre-Permian reservoirs of the Permian basin lie in large structural and unconformity-bounded traps on uplift ridges and domes. Further work on the regional structural style may help to predict fracture trends, to assess the timing of oil migration, and to evaluate intrareservoir variations in the overlying Permian giant oil fields.

  5. SES discrepancies and Delaware cancer death rates.

    PubMed

    Frelick, Robert W

    2004-03-01

    Cancer can be monitored fairly effectively by using cancer registry data for site, stage, age, sex, and race. Adding to this the patient's years of education, now only found on death certificates, should not be difficult since it is an easily measured major SES factor. Most comorbidities should also be easy to obtain since hospitals usually code them. Capturing all treatment and response data remains a challenge as more and more cancer diagnosis and management is done in outpatient settings. Current efforts to establish electronic medical records in compliance with the Health Insurance Portability and Accountability Act (HIPAA) may be a blessing if adequate software can be standardized and used similar to that already present in the VA hospital in Delaware. Such information would aid efforts to reduce Delaware's high cancer incidence and mortality rates. A proposed state cancer plan should stimulate improved integration of the state's health resources to focus on the quality of individual health care and to use cost-effective measures to improve the public's health. A plan should (1) stimulate a public awareness to reduce risk factors for all major chronic diseases with a special focus on cancer deaths; (2) use medical office settings to provide simple screens to improve the early detection of a number of chronic diseases depending on such risks as age and sex (such studies might include weight, height, blood pressure, sugar, cholesterol, PSAs, exams of skin, oral cavities, breasts, abdomen, rectum, and vagina with pap smears, all of which can be accomplished in a cost-effective fashion); and (3) offer equitable access to a state's health care system for information, screening, and treatment. Current evidence shows that it is less expensive to manage patients with early cancers than those with advanced cases, which often occur because of ignorance and lack of access to health services, and by socioeconomic, educational, and cultural barriers. Implementing the

  6. Integrating petroleum and sulfur data to map the Guadalupian-Ochoan (Middle to Upper Permian) Boundary of the Delaware Basis, Trans-Pecos, Texas

    NASA Astrophysics Data System (ADS)

    Dishron, Joseph B.

    2011-12-01

    The Delaware Basin of the Permian Basin is a classic intra-cratonic basin of West Texas and Southeast New Mexico. Hydrocarbon exploration and production have occurred in the region since the early 1920s, and, as a result, the formations related to these oil and gas reserves have been studied in great detail. Some formations in the Delaware Basin, however, have not been studied in such detail, and this thesis examines one, lesser-known unit that could have economic potential. The Lamar Limestone (Lamar Lime) of the Bell Canyon Formation has commonly been dismissed as a production interval; rather, it has been described as a source and seal rock for the Ramsey Sand of the lower Bell Canyon Formation. However, recent studies found that the Lamar Lime was contributing to production, and it has been described by Trentham (2006) as a potentia "mini Barnett" reservoir. The depths of these deposits are in a range that is ideal for oil accumulation. This study made use of data from wells and test holes drilled in the western Delaware Basin, Culberson County, Texas. Many oil and gas wells have been drilled in the western Delaware Basin, but they are concentrated in the north and east portions of Culberson County. In addition, sulfur wells were drilled in the area in the late 1960s and early 1970s. Analyses of the well logs of these wells and of core and outcrop studies were completed to gain a better understanding of the distribution and economic potential of the Lamar. Both datasets were combined to provide information not readily available in the oil and gas dataset. The Lamar Lime is an excellent marker bed because it underlies thick evaporites. The evaporite sequences are Ochoan in age, and, therefore, the contact of the Lamar Lime (Bell Canyon Formation) and the Castile Formation is the approximate boundary for the Guadalupian-Ochoan Series. The Castile Formation, the Salado Formation, and the Rustler Formation (from oldest to youngest) are the evaporite units that

  7. 5. Perspective view of single bin, looking north. Delaware, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Perspective view of single bin, looking north. - Delaware, Lackawanna & Western Railroad, Scranton Yards, Scrap Platform, 350 feet South of South Washington Avenue & River Street, Scranton, Lackawanna County, PA

  8. 2. Elevated perspective of Scrap Platform, looking south. Delaware, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Elevated perspective of Scrap Platform, looking south. - Delaware, Lackawanna & Western Railroad, Scranton Yards, Scrap Platform, 350 feet South of South Washington Avenue & River Street, Scranton, Lackawanna County, PA

  9. 1. Elevated view of Scrap Platform, looking southwest. Delaware, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Elevated view of Scrap Platform, looking southwest. - Delaware, Lackawanna & Western Railroad, Scranton Yards, Scrap Platform, 350 feet South of South Washington Avenue & River Street, Scranton, Lackawanna County, PA

  10. 13. DETAIL, LATERAL BRACING FOR INTERIOR OVERHEAD CRANE Delaware, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. DETAIL, LATERAL BRACING FOR INTERIOR OVERHEAD CRANE - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  11. 5. VIEW SOUTHWEST, NORTH AND EAST ELEVATIONS Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW SOUTHWEST, NORTH AND EAST ELEVATIONS - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  12. 10. VIEW SOUTHWEST, LEANTO ALONG NORTH ELEVATION Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. VIEW SOUTHWEST, LEAN-TO ALONG NORTH ELEVATION - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  13. 6. VIEW NORTHWEST, SOUTH AND EAST ELEVATIONS Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW NORTHWEST, SOUTH AND EAST ELEVATIONS - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  14. 16. INTERIOR, NORTH INSPECTION TRACK, FACING WEST Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. INTERIOR, NORTH INSPECTION TRACK, FACING WEST - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  15. 7. VIEW SOUTHEAST, NORTH AND WEST ELEVATIONS Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW SOUTHEAST, NORTH AND WEST ELEVATIONS - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  16. 23. CONTEXTUAL, RAIL CARS IN MU SHED Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. CONTEXTUAL, RAIL CARS IN MU SHED - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  17. 8. VIEW EASTNORTHEAST, SOUTH AND WEST ELEVATIONS Delaware, Lackawanna ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. VIEW EAST-NORTHEAST, SOUTH AND WEST ELEVATIONS - Delaware, Lackawanna & Western Railroad Freight & Rail Yard, Multiple Unit Light Inspection Shed, New Jersey Transit Hoboken Terminal Rail Yard, Hoboken, Hudson County, NJ

  18. 2. DELAWARE AVE. (far right, looking north) AND BAINBRIDGE ST. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. DELAWARE AVE. (far right, looking north) AND BAINBRIDGE ST. (lower horizontal line) SHOWING SOCIETY HILL TOWERS (upper left, by I.M. Pei) - Independence National Historical Park, Walnut, Sixth, Chestnut & Second Streets, Philadelphia, Philadelphia County, PA

  19. Introduction to the Delaware River Port Authority's Smart Bridges initiative

    NASA Astrophysics Data System (ADS)

    Box, Robert A.; McCullough, Patrick J.; Bistline, Robert S.

    2000-06-01

    The Delaware River Port Authority, whose mission is to manage, plan and construct transportation facilities and provide transportation services to maximize the safe and efficient movement of people and freight within the Delaware River Valley, located in southwestern Pennsylvania and southern New Jersey, is a self-financing, bi-state Authority, formed by a compact between the Commonwealth of Pennsylvania and the State of New Jersey and approved by the Congress of the United States. The Delaware River Port Authority is firmly committed to the strategic and integrated use of advanced transportation technology to improve traffic flow, operational efficiency and safety on DRPA's four bridges. To this end, the Delaware River Port Authority has initiated a program, appropriately named 'Smart Bridges.' The Delaware River Port Authority has recognized that this type of program is essential to the advancement of the DRPA's mission as an efficient, customer- friendly transportation and regional development agency. Under the Smart Bridges program the Delaware River Port Authority is introducing new technology into its aging infrastructure and transportation systems to ensure that the facilities continue to serve the region into the 21st century and beyond. Initiatives introduced under this program include EZ Pass, video surveillance systems, computerized traffic control systems and partnering with local universities to investigate the application of various innovative technologies to assist in the maintenance of the bridge facilities.

  20. Are historical pollution events on the Delaware River recorded as geochemical marker horizons in adjacent marsh sediments

    SciTech Connect

    Walsh, R.; Yemane, K. . Dept. of Geology Bryn Mawr Coll., PA . Geology Dept.)

    1993-03-01

    In the last two hundred years of massive population and industrial growth, the Delaware River has been subjected to several minor and major pollutions. For example, as recently as June 1989 the tanker Presidente Rivera spilled an estimated hundred thousand to million gallons of oil into the river. In the Lower Delaware Basin tides affect the river and its tributaries up to a hundred kilometers inland. The freshwater marshes adjacent to the creeks that empty into the Delaware River experience diurnal tidal sedimentation. It is thus expected that the pollutants in the waterway would be transported via the tidal channels into the adjacent wetlands. The high sedimentation rate, clay-rich sediments, accumulation of terrestrial organic matter, and the low energy environments in these marshes should ensure rapid burial which may preserve some of the contaminants transported into the marshes. To test this hypothesis the authors selected a freshwater marsh along the Raccoon Creek just south of Philadelphia in New Jersey, and collected a 2 m core from a relatively undisturbed portion of the marsh, about 15 m away from the tidal channels. The pH averages around 6.2, ranges from 5.5--6.8, but, is slightly higher in the middle part of the core. The bulk mineralogy comprises chlorite, illite, kaolinite, feldspars and quartz. Vivianite and vermiculite were observed at places lower in the core. Graminae dominates the pollen/spore taxa. The organic debris is unaltered throughout the core. The authors will measure heavy metals and toxic chemicals on < 2[mu]m clay fractions. Also pristane/phytane ratios, indicative of hydrocarbons (crude oils), will be determined on organic matter extracts. The authors will compare and correlate the results to historically documented events of chemical and petroleum spills on the Delaware River.

  1. 78 FR 68026 - Foreign-Trade Zone (FTZ) 99-Wilmington, Delaware, Notification of Proposed Production Activity...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF COMMERCE Foreign-Trade Zones Board Foreign-Trade Zone (FTZ) 99--Wilmington, Delaware, Notification of Proposed Production Activity, Noramco, Inc., (Pharmaceutical Intermediate), Wilmington, Delaware The Delaware Economic Development Office, grantee of FTZ...

  2. 36 CFR 7.71 - Delaware Water Gap National Recreation Area.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 2013-07-01 2013-07-01 false Delaware Water Gap National... THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.71 Delaware Water Gap National... within the Delaware Water Gap National Recreation Area: (i) Those operated by businesses based within...

  3. 36 CFR 7.71 - Delaware Water Gap National Recreation Area.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 2012-07-01 2012-07-01 false Delaware Water Gap National... THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.71 Delaware Water Gap National... within the Delaware Water Gap National Recreation Area: (i) Those operated by businesses based within...

  4. 36 CFR 7.71 - Delaware Water Gap National Recreation Area.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 1 2014-07-01 2014-07-01 false Delaware Water Gap National... THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.71 Delaware Water Gap National... within the Delaware Water Gap National Recreation Area: (i) Those operated by businesses based within...

  5. 77 FR 41337 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Control Technique...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-13

    ...EPA is proposing to approve revisions to the Delaware State Implementation Plan (SIP) submitted by the Delaware Department of Natural Resources and Environmental Control (DNREC) on April 1, 2010 and March 9, 2012. These SIP revisions consist of amendments to Delaware's regulation for the Control of Volatile Organic Compounds (VOC) and meet the requirement to adopt reasonably available control......

  6. Annual Report of School Climate and Student Conduct in Delaware Schools: 1999-2000.

    ERIC Educational Resources Information Center

    Beyers, Francine Simmons; Houston, Ronald L.

    This report provides information on the conduct of students in Delaware public schools during the 1999-2000 school year. The focus of the analysis is on reported incidence of serious student conduct offenses as defined by Delaware Code or as defined by Delaware State Board of Education regulations and reported incidence of student suspensions and…

  7. Development of the University of Delaware Experimental Watershed Project

    NASA Astrophysics Data System (ADS)

    Campagnini, J. L.; Kauffman, G. J.; Corrozi, M.; Bower, J.

    2001-05-01

    In 2000, a team of University of Delaware undergraduate and graduate students developed the University of Delaware Experimental Watershed Project with a grant from the Delaware Water Resources Center. The University of Delaware (UD) is a land- and sea-grant institution in Newark, Delaware and is perched along the Atlantic seaboard's fall line. A critical mass of UD faculty and students in water resources and related disciplines are interested in the development of an experimental watershed on campus to provide (1) interdisciplinary undergraduate, graduate and faculty research opportunities, and (2) an outdoor education laboratory. Using GIS and field reconnaissance techniques, the three students delineated two small experimental watershed regions respectively located in the Piedmont and Coastal Plain provinces of the White Clay Creek Wild and Scenic River Valley on the UD campus. The Piedmont watershed drains 416 acres of the northern area of campus while the Coastal Plain watershed drains 896 acres including the central and southern sections of campus. The students then developed an ArcView GIS atlas integrating geology, soils, topography, land use, and impervious cover layers with a rating system for water quality and habitat characteristics to issue a "report-card" assessing each watershed's overall health. The White Clay Creek Wild and Scenic River Valley is an ideal on campus location for an outdoor education and research laboratory because of its manageable scale, the diversity of its characteristic land uses and physical environment, and above all its accessibility for students, faculty, researchers, and the public.

  8. Taconic collision in SE Penna and Delaware

    SciTech Connect

    Crawford, M.L.; Crawford, W.A.; Hoersch, A.L.; Srogi, L.A.; Wagner, M.E.

    1985-01-01

    Taconic metamorphism and tectonism in SE Pennsylvania and northern Delaware were a result of the collision of a volcanic arc with North America. The Wilmington Complex, the infrastructure of the arc, is presently the highest structural unit. It consists of granulite facies volcanogenic sediments intruded by gabbro and a ca. 500 Ma gabbronorite-charnockite suite. Latest Precambrian-earliest Paleozoic sediments of the Glenarm series were metamorphosed to conditions above the second sillimanite isograd beneath the overthrust hot (700-800/sup 0/C) Wilmington Complex. As the edge of the continent was depressed and heated under the advancing thrust complex, basement-involved nappes of Grenville age rocks (Avondale anticline, Woodville dome) with the Glenarm sedimentary cover were thrust over still rigid autochthonous basement (West Chester Prong). On the NW flank of the orogen, Grenville age gneiss-cored massifs (Honey Brook Upland, Mine Ridge, Trenton Prong), unconformably overlain by lower Paleozoic continental shelf sediments, were involved in the thrusting but metamorphosed only to the greenschist facies. Steep anticlines developed later in the Paleozoic, contributing to the present pattern of northeast trending Grenville basement massifs mantled by overlying units.

  9. Vending machine policies and practices in Delaware.

    PubMed

    Gemmill, Erin; Cotugna, Nancy

    2005-04-01

    Overweight has reached alarming proportions among America's youth. Although the cause of the rise in overweight rates in children and adolescents is certainly the result of the interaction of a variety of factors, the presence of vending machines in schools is one issue that has recently come to the forefront. Many states have passed or proposed legislation that limits student access to vending machines in schools or require that vending machines in schools offer healthier choices. The purposes of this study were (a) to assess the food and beverage vending machine offerings in the public school districts in the state of Delaware and (b) to determine whether there are any district vending policies in place other than the current U.S. Department of Agriculture regulations. The results of this study indicate the most commonly sold food and drink items in school vending machines are of minimal nutritional value. School administrators are most frequently in charge of the vending contract, as well as setting and enforcing vending machine policies. Suggestions are offered to assist school nurses, often the only health professional in the school, in becoming advocates for changes in school vending practices and policies that promote the health and well-being of children and adolescents. PMID:15801875

  10. Habitat conditions and correlations of sediment quality triad indicators in Delaware Bay.

    PubMed

    Hartwell, S Ian; Hameedi, M Jawed

    2006-10-01

    This paper summarizes sampling results from NOAA's National Status and Trends (NS&T) Program for marine environmental quality in Delaware Bay. A stratified-random design was used to determine the spatial extent of sediment contamination and toxicity in Delaware Bay from offshore stations in the coastal zone, the lower estuary, the upper estuary, the fresh/salt mixing zone, and tidal fresh areas. Sediment samples were taken for chemical analyses of major classes of environmental contaminants, a suite of toxicity bioassays, and benthic macrofaunal community assessment to identify patterns of resident species. The tidal-fresh areas and portions of the mixing zone of the study area were heavily contaminated. Contaminant concentrations were frequently above the 90th percentile of EMAP Virginian Province levels. PAHs in the sediment were higher than previously documented, with a major component of PAHs being pyrogenic in origin. Bioassay results were highly variable. Toxicity and contaminant levels were correlated when aggregated into indices, but were only marginally correlated with benthic community impacts. High and low abundance stations were found in all zones. Most of the tidal fresh stations were dominated by pollution tolerant species. Species diversity and abundance were generally lowest in the fresh/salt mixing zone. PMID:16741790

  11. Improvements in Correctional HIV Services: A Case Study in Delaware

    PubMed Central

    Swan, Holly; O’Connell, Daniel J.; Visher, Christy A.; Martin, Steven S.; Swanson, Karen R.; Hernandez, Kristin

    2015-01-01

    This article describes the experience and outcomes of the National Institute on Drug Abuse-funded Criminal Justice Drug Abuse Treatment Studies HIV Services and Treatment Implementation in Corrections protocol in the state of Delaware. The protocol was designed to test the effectiveness of a change team model in improving HIV services in correctional settings. In Delaware, a team was created with representatives from correctional and community agencies to work on improving linkage to HIV care for individuals released from incarceration. The team made improvements in the entire HIV service continuum: linkage to HIV care, HIV education, and HIV testing. The experiences in Delaware and the findings from this study suggest that the use of a change team model is a viable method for making organizational change in correctional settings. PMID:25788611

  12. Improvements in Correctional HIV Services: A Case Study in Delaware.

    PubMed

    Swan, Holly; O'Connell, Daniel J; Visher, Christy A; Martin, Steven S; Swanson, Karen R; Hernandez, Kristin

    2015-04-01

    This article describes the experience and outcomes of the National Institute on Drug Abuse-funded Criminal Justice Drug Abuse Treatment Studies HIV Services and Treatment Implementation in Corrections protocol in the state of Delaware. The protocol was designed to test the effectiveness of a change team model in improving HIV services in correctional settings. In Delaware, a team was created with representatives from correctional and community agencies to work on improving linkage to HIV care for individuals released from incarceration. The team made improvements in the entire HIV service continuum: linkage to HIV care, HIV education, and HIV testing. The experiences in Delaware and the findings from this study suggest that the use of a change team model is a viable method for making organizational change in correctional settings. PMID:25788611

  13. Distribution and concentration of suspended matter in Delaware Bay

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Philpot, W.

    1977-01-01

    The author has identified the following significant results. The problem of remote sensing of suspended matter in water was analyzed in terms of the single-scattering albedo, and a semiempirical relationship between satellite radiance measurements and the concentration of suspended matter in the water was developed. The relationship was tested using data from the 7 July 1973 LANDSAT overpass of Delaware Bay with good results. Suspended sediment concentration maps for the entire Delaware Bay were prepared using radiance values extracted from LANDSAT MSS imagery and correlating them with ground truth samples collected from boats and helicopter.

  14. Monitoring estuarine circulation and ocean waste dispersion using an integrated satellite-aircraft-drogue approach. [Delaware coast and Delaware Bay

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Davis, G.; Wang, H.

    1975-01-01

    The author has identified the following significant results. An inexpensive, integrated drogue-aircraft-satellite approach was developed which is based on the Lagrangian technique and employs remotely tracked drogues and dyes together with satellite observation of natural tracers, such as suspended sediment. Results include current circulation studies in Delaware Bay in support of an oil slick movement model; investigations of the dispersion and movement of acid wastes dumped 40 miles off the Delaware coast; and coastal current circulation. In each case, the integrated drogue-aircraft-satellite approach compares favorably with other techniques on the basis of accuracy, cost effectiveness, and performance under severe weather conditions.

  15. Manual for School Building Commissions of the State of Delaware.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover.

    This manual contains provisions of Delaware state law and recommended procedures for construction programs. Areas discussed include--(1) financing, (2) school construction formulae for space allowances, (3) proposed school building budget, (4) procedures for school building construction, (5) a check list for an accounting system, (6) purchase…

  16. 16. Photocopy of a photograph in Delaware Department of Transportation ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. Photocopy of a photograph in Delaware Department of Transportation files, photographer unknown, about 1970 VIEW OF BRIDGE 808, LOOKING SOUTH TOWARD THE MILL - Wagamon Pond Dam & Bridge, Spanning Broadkill River at State Road No. 197 (Mulberry Street), Milton, Sussex County, DE

  17. 15. Photocopy of a photograph in Delaware Department of Transportation ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. Photocopy of a photograph in Delaware Department of Transportation files, photographer unknown, about 1970 VIEW OF THE DOWNSTREAM (EAST) SIDE OF BRIDGE 808 AND THE GATES, LOOKING SOUTH TOWARD THE MILL - Wagamon Pond Dam & Bridge, Spanning Broadkill River at State Road No. 197 (Mulberry Street), Milton, Sussex County, DE

  18. Factors Influencing School Choice in a School District in Delaware

    ERIC Educational Resources Information Center

    Kennedy, John J., Jr.

    2012-01-01

    The purpose of this descriptive study is to examine the factors that influenced parents in a school district in Delaware when they selected a high school for their child. This study also sought to examine the sources of information that parents used. Also examined was the impact of socio-economic status in the high school selection process. A…

  19. Delaware and the Southern Regional Education Board, December 2014

    ERIC Educational Resources Information Center

    Southern Regional Education Board (SREB), 2014

    2014-01-01

    This report details Delaware's participation in Southern Regional Education Board (SREB) programs and services from December 2013 through November 2014. Appropriations from member states support SREB's core operations and general services. SREB leverages the long-standing commitment of member states to attract external funding for an array of…

  20. State of Delaware School Construction Technical Assistance Manual.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover.

    This manual is a reference guide for those involved in school planning, maintenance, repair, and construction funded through the Capital Improvement Program for Delaware public schools. It is an updated version of the previous edition adopted by the state board in May 1991 and presents regulations adopted by the state board. Following each…

  1. National Environmental/Energy Workforce Assessment for Delaware.

    ERIC Educational Resources Information Center

    National Field Research Center Inc., Iowa City, IA.

    This report presents existing workforce levels, training programs and career potentials and develops staffing level projections (1976-1982) based on available information for the State of Delaware. The study concerns itself with the environmental pollution control areas of air, noise, potable water, pesticides, radiation, solid waste, wastewater,…

  2. 33 CFR 167.174 - Off Delaware Bay: Precautionary area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Off Delaware Bay: Precautionary area. 167.174 Section 167.174 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY OFFSHORE TRAFFIC SEPARATION SCHEMES Description of Traffic Separation Schemes and Precautionary...

  3. 33 CFR 167.174 - Off Delaware Bay: Precautionary area.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Off Delaware Bay: Precautionary area. 167.174 Section 167.174 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY OFFSHORE TRAFFIC SEPARATION SCHEMES Description of Traffic Separation Schemes and Precautionary...

  4. Nutrient Management Certification for Delaware: Developing a Water Quality Curriculum

    ERIC Educational Resources Information Center

    Hansen, David J.; Binford, Gregory D.

    2004-01-01

    Water quality is a critical environmental, social, and political issue in Delaware. In the late 1990s, a series of events related to water quality issues led to the passage of a state nutrient management law. This new law required nutrient management planning and established a state certification program for nutrient users in the agricultural and…

  5. Kids Voices Count: Listening to Delaware's Children Talk about Tobacco.

    ERIC Educational Resources Information Center

    Delaware Univ., Newark. Kids Count in Delaware.

    This Kids Count special report examines attitudes of adolescents in Delaware toward smoking and the use of tobacco products. Data are based on interviews with middle and high school students conducted by journalism students at Glasgow High School under the supervision of their teacher, and on statewide data. The report presents statewide data and…

  6. Profile of State College Entrance Exam Policies. Delaware

    ERIC Educational Resources Information Center

    Center on Education Policy, 2011

    2011-01-01

    This individual profile provides information on Delaware's college entrance exam standards and polices. Some of the categories presented include: (1) College entrance exam policy; (2) Purpose; (3) Major changes in college entrance exam policy since the 2009-10 school year for financial reasons; (4) Preparation state offers to students taking…

  7. Delaware State Plan, Fiscal Year 1988-90.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover.

    The Delaware State Plan for fiscal years 88-90, as mandated by Public Law 94-142, the Education for All Handicapped Children Act. Part I consists of various submission statements and certifications required by the law. Part II consists of substantive requirements. Policies, procedures, and descriptions concerning the following are detailed: right…

  8. Delaware's Migrant Education Parent Handbook [in English and Spanish].

    ERIC Educational Resources Information Center

    Capital School District, Dover, DE.

    Written to help migrant parents with day-to-day concerns about their children and their children's schooling, this handbook provides a variety of reference information. A definition of migrant education services is followed by a directory of individuals responsible for migrant education in Delaware at state and local levels. Telephone numbers are…

  9. Case Study: Sussex Technical High School, Georgetown, Delaware.

    ERIC Educational Resources Information Center

    Southern Regional Education Board, Atlanta, GA.

    A vocational-technical center in Delaware, launched a massive restructuring effort in 1988. Educators used frameworks provided by the National Center for Research in Vocational Education and Southern Regional Educational Board and visited High Schools That Work sites. In 1991, Sussex Technical High School opened its doors as a newly designed…

  10. Delaware Student Testing Program: Special Writing Study Report.

    ERIC Educational Resources Information Center

    Zhang, Liru

    A study investigated possible reasons for the low performance in 2000 on the writing portion of the Delaware Student Testing Program (DSTP) by students, especially in grades 3 and 5. The study also investigated ways to improve classroom instruction in writing. A panel of teachers reviewed the anchor papers and the process of testing. Panel members…

  11. Sex, Lies, and Residence Life: Delaware's Thought Reform

    ERIC Educational Resources Information Center

    Kissel, Adam

    2009-01-01

    The University of Delaware has a zero-tolerance policy for anything remotely resembling "hate speech." As such, the school implemented a mandatory training for all 7,000-odd students in its dorms. The sessions were part of a thorough thought-reform curriculum, designed by the school's Office of Residence Life, psychologically to "treat" and…

  12. 33 CFR 165.555 - Safety Zone; Delaware River.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety Zone; Delaware River. 165.555 Section 165.555 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and Limited Access...

  13. Enhancing Knowledge Transfer Efforts at Delaware Technical Community College

    ERIC Educational Resources Information Center

    DePlasco, Patricia Oliver

    2012-01-01

    Delaware Technical Community College employees possess critical knowledge and expertise that could be lost should they leave College employment. This paper investigates best practices in knowledge transfer and high-level staff and administrator responses to a survey concerning the critical knowledge and leadership skills needed to be successful in…

  14. Inventories of Delaware's coastal vegetation and land-use utilizing digital processing of ERTS-1 imagery

    NASA Technical Reports Server (NTRS)

    Klemas, V.; Bartlett, D.; Rogers, R.; Reed, L.

    1974-01-01

    Digital analysis of ERTS-1 imagery was used in an attempt to map and inventory the significant ecological communities of Delaware's coastal zone. Eight vegetation and land use discrimination classes were selected: (1) phragmites communis (Giant Reed grass); (2) spartina alterniflora (Salt marsh cord grass); (3) spartina patens (Salt marsh hay); (4) shallow water and exposed mud; (5) deep water (2 meters); (6) forest; (7) agriculture; and (8) exposed sand and concrete. Canonical analysis showed that classification accuracy was quite good with spartina alterniflora, exposed sand-concrete, and forested land - all discriminated with between 94% and 100% accuracy. The shallow water-mud and deep water categories were classified with accuracies of 88% and 93% respectively. Phragmites communis showed a classification accuracy of 83% with all confusion occurring with spartina patens which may be due to use of mixed stands of these species as training sets. Discrimination of spartina patens was very poor (accuracy 52%).

  15. Application of ecological, geological and oceanographic ERTS-1 imagery to Delaware's coastal resources management

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Bartlett, D. S.; Philpot, W. D.; Davis, G. R.; Rogers, R. H.; Reed, L.

    1974-01-01

    The author has identified the following significant results. Data from twelve successful ERTS-1 passes over Delaware Bay have been analyzed with special emphasis on coastal vegetation, land use, current circulation, water turbidity and pollution dispersion. Secchi depth, suspended sediment concentration and transmissivity as measured from helicopters and boats were correlated with ERTS-1 image radiance. Multispectral signatures of acid disposal plumes, sediment plumes and slick were investigated. Ten vegetative cover and water discrimination classes were selected for mapping: (1) forest-land; (2) Phragmites communis; (3) Spartina patens and Distichlis spicata; (4) Spartina alterniflora; (5) cropland; (6) plowed cropland; (7) sand and bare sandy soil; (8) bare mud; (9) deep water; and (10) sediment-laden and shallow water. Canonical analysis predicted good classification accuracies for most categories. The actual classification accuracies were very close to the predicted values with 8 of 10 categories classified with greater than 90% accuracy indicating that representative training sets had been selected.

  16. 33 CFR 207.100 - Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... navigation. 207.100 Section 207.100 Navigation and Navigable Waters CORPS OF ENGINEERS, DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE NAVIGATION REGULATIONS § 207.100 Inland waterway from Delaware River to... or pass through the waterway. Vessels carrying rods, poles, or other gear extending above the top...

  17. Kids Count in Delaware: Fact Book, 2000-2001 [and] Families Count in Delaware: Fact Book, 2000-2001.

    ERIC Educational Resources Information Center

    Delaware Univ., Newark. Kids Count in Delaware.

    This Kids Count Fact Book is combined with the Families Count Fact Book to provide information on statewide trends affecting children and families in Delaware. The Kids Count statistical profile is based on 11 main indicators of child well-being: (1) births to teens 15 to 17 years; (2) births to teens 15 to 19 years; (3) low birth weight babies;…

  18. Mapping coastal vegetation, land use and environmental impact from ERTS-1. [Delaware coastal zone

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator)

    1973-01-01

    The author has identified the following significant results. Digital analysis of ERTS-1 imagery was used in an attempt to map and inventory the significant ecological communities of Delaware's coastal zone. Eight vegetation and land use discrimination classes were selected: (1) Phragmites communis (giant reed grass); (2) Spartina alterniflora (salt marsh cord grass); (3) Spartina patens (salt marsh hay); (4) shallow water and exposed mud; (5) deep water (greater than 2 m); (6) forest; (7) agriculture; and (8) exposed sand and concrete. Canonical analysis showed the following classification accuracies: Spartina alterniflora, exposed sand, concrete, and forested land - 94% to 100%; shallow water - mud and deep water - 88% and 93% respectively; Phragmites communis 83%; Spartina patens - 52%. Classification accuracy for agriculture was very poor (51%). Limitations of time and available class-memory space resulted in limiting the analysis of agriculture to very gross identification of a class which actually consists of many varied signature classes. Abundant ground truth was available in the form of vegetation maps compiled from color and color infrared photographs. It is believed that with further refinement of training set selection, sufficiently accurate results can be obtained for all categories.

  19. Calibration of a streamflow-routing model for the Delaware River and its principal tributaries in New York, New Jersey, and Pennsylvania

    USGS Publications Warehouse

    Flippo, H.N., Jr.; Madden, T.M., Jr.

    1994-01-01

    The flow-routing module of the Hydrologic Simulation Program-Fortran watershed model was calibrated for 31 reaches on the Delaware River and 5 of it principal tributaries. These calibrations primarily involved the development of discharge-storage volume relations for the defined reaches. Daily discharge records for stream-gaging stations located at the upstream ends of the study reaches on the respective streams provided the primary hydrographic inputs for the routing models. Streamflow records for gaging stations at upstream locations and on other tributaries were used to estimate all other inflows for the 5-year calibration period, 1979-83. Root mean square errors of streamflows that were simulated for the downstream ends of gaged reaches ranged from 0.4 to 9.4 percent for the Delaware River, Lehigh River, Schuylkill River, and Brandywine Creek. Errors of 13 and 30 percent resulted from the streamflow simulations for the Lackawaxen and Neversink Rivers, respectively. Verification simulations for a 3-month period of extreme low flows on the Delaware River in 1966 resulted in overestimation of discharges for the Trenton, NJ, gaging station by approximately 50 percent on many days. Observed (recorded) streamflows at the Trenton gaging station during this time were exceptionally low, owing to comparatively large diversions of flow for public supplies, and into the Delaware and Raritan Canal. A flow-verification simulation for 3 months of the summer and fall of 1985, during which time minimum flows in the basin were comparable to those of 1966, resulted in a root mean square error of 3.3 percent for the Trenton gaging station. There was no diversion to the Delaware and Raritan Canal at the time. Simulated flows closely matched observed flows for upstream gaging stations on the Delaware River as well, thereby confirming the routing calibration for this stream. Information contained in this report can be used, with little modification, to develop routing modules for

  20. User's manual for the upper Delaware River riverine environmental flow decision support system (REFDSS), Version 1.1.2

    USGS Publications Warehouse

    Talbert, Colin; Maloney, Kelly O.; Holmquist-Johnson, Chris; Hanson, Leanne

    2014-01-01

    Between 2002 and 2006, the Fort Collins Science Center (FORT) at the U.S. Geological Survey (USGS) conducted field surveys, organized workshops, and performed analysis of habitat for trout and shad in the Upper Delaware River Basin. This work culminated in the development of decision support system software (the Delaware River DSS–DRDSS, Bovee and others, 2007) that works in conjunction with the Delaware River Basin Commission’s reservoir operations model, OASIS, to facilitate comparison of the habitat and water-delivery effects of alternative operating scenarios for the Basin. This original DRDSS application was developed in Microsoft Excel and is available to all interested parties through the FORT web site (http://www.fort.usgs.gov/Products/Software/DRDSS/). Initial user feedback on the original Excel-based DSS highlighted the need for a more user-friendly and powerful interface to effectively deliver the complex data and analyses encapsulated in the DSS. In order to meet this need, the USGS FORT and Northern Appalachian Research Branch (NARB) developed an entirely new graphical user interface (GUI) application. Support for this research was through the DOI WaterSmart program (http://www.doi.gov/watersmart/html/index.php) of which the USGS component is the National Water Census (http://water.usgs.gov/watercensus/WaterSMART.html). The content and methodology of the new GUI interface emulates those of the original DSS with a few exceptions listed below. Refer to Bovee and others (2007) for the original information. Significant alterations to the original DSS include: • We moved from Excel-based data storage and processing to a more powerful database back end powered by SQLite. The most notable effect of this is that the previous maximum temporal extent of 10 years has been replaced by a dynamic extent that can now cover the entire period of record for which we have data (1928–2000). • We incorporated interactive geographic information system (GIS

  1. Infrared view of Chesapeake Bay showing Virginia, Maryland and Delaware

    NASA Technical Reports Server (NTRS)

    1975-01-01

    An infrared, near view of the Chesapeake Bay area showing portions of Virginia, Maryland and Delaware, as photographed from the Apollo spacecraft in Earth orbit during the joint U.S.-USSR Apollo Soyuz Test Project (ASTP) mission. Richmond and Norfolk can be seen in this picture. Tidewater, Virginia covers much of this view. The photograph was taken at an altitude of 217 kilometers (135 statute miles).

  2. Derivation of Delaware Bay tidal parameters from space shuttle photography

    SciTech Connect

    Zheng, Quanan; Yan, Xiaohai; Klemas, V. )

    1993-06-01

    The tide-related parameters of the Delaware Bay are derived from space shuttle time-series photographs. The water areas in the bay are measured from interpretation maps of the photographs with a CALCOMP 9100 digitizer and ERDAS Image Processing System. The corresponding tidal levels are calculated using the exposure time annotated on the photographs. From these data, an approximate function relating the water area to the tidal level at a reference point is determined. Based on the function, the water areas of the Delaware Bay at mean high water (MHW) and mean low water (MLW), below 0 m, and for the tidal zone are inferred. With MHW and MLW areas and the mean tidal range, the authors calculate the tidal influx of the Delaware Bay, which is 2.76 x 1O[sup 9] m[sup 3]. Furthermore, the velocity of flood tide at the bay mouth is determined using the tidal flux and an integral of the velocity distribution function at the cross section between Cape Henlopen and Cape May. The result is 132 cm/s, which compares well with the data on tidal current charts.

  3. Exploring Marine Science through the University of Delaware's TIDE camp

    NASA Astrophysics Data System (ADS)

    Veron, D. E.; Newton, F. A.; Veron, F.; Trembanis, A. C.; Miller, D. C.

    2012-12-01

    For the past five years, the University of Delaware has offered a two-week, residential, summer camp to rising sophomores, juniors, and seniors who are interested in marine science. The camp, named TIDE (Taking an Interest in Delaware's Estuary) camp, is designed to introduce students to the breadth of marine science while providing them with a college experience. Campers participate in a variety of academic activities which include classroom, laboratory, and field experiences, as well as numerous social activities. Two unique features of this small, focused camp is the large number of university faculty that are involved, and the ability of students to participate in ongoing research projects. At various times students have participated in fish and dolphin counts, AUV deployment, wind-wave tank experiments, coastal water and beach studies, and ROV activities. In addition, each year campers have participated in a local service project. Through communication with former TIDE participants, it is clear that this two-week, formative experience plays a large role in students choice of major when entering college.2012 Tide Camp - Salt marsh in southern Delaware 2012 Tide Camp - Field trip on a small boat

  4. Experiments in water spreading at Newark, Delaware

    USGS Publications Warehouse

    Boggess, Durward Haye; Rima, Donald Robert

    1962-01-01

    Two experiments in water spreading were made at Newark, Del., to evaluate the prospects of using excess storm runoff to recharge the shallow water-table aquifer which serves the community. Water was diverted from 1 of the city's 3 production wells and released into an infiltration ditch near the municipal well field. Although slightly more than 65,000 cubic feet of water (nearly 500,000 gallons ) was spread in the infiltration ditch and allowed to seep into the subsurface, there was no indication that any appreciable amount of water reached the producing aquifer. Instead, a perched zone of saturation was created by the presence of an impermeable or slightly permeable bed above the water table. So effective is this barrier to the downward movement of water that within a period of less than 1 day, the apex of the perched zone rose about 10 feet to the level of the bottom of the infiltration ditch. As more water was added, the mound of saturation spread laterally. On the basis of these experiments, it appears that the principal aquifer at Newark, Del., would not be benefited by spreading water in shallow infiltration ditches or basins. However, the absorptive capacity of the unsaturated materials which occur at a shallow depth, is sufficient to permit the disposal of large volumes of storm runoff.

  5. Literacy at the Core of the Delaware World Language Immersion Programs

    ERIC Educational Resources Information Center

    Fulton-Archer, Lynn

    2013-01-01

    Certain aspects of the implementation of language immersion programs in Delaware are unique given the state's size, demographics, and role in national education initiatives including Race to the Top, Common Core, and Smarter Balance. The Delaware experience typifies what every state, district, or even school goes through as they try to…

  6. The Delaware Geography-Health Initiative: Lessons Learned in Designing a GIS-Based Curriculum

    ERIC Educational Resources Information Center

    Rees, Peter W.; Silberman, Jordan A.

    2010-01-01

    The Delaware Geography-Health Initiative is a Web- and GIS-based set of lesson units for teaching geographic concepts and research methods within the context of the state's high school geography standards. Each unit follows a research-based, inquiry-centered model addressing questions of health because of Delaware's high incidence of cancer,…

  7. Positive Behavior Support in Delaware Schools: Developing Perspectives on Implementation and Outcomes. Executive Summary

    ERIC Educational Resources Information Center

    Ackerman, Cheryl M.; Cooksy, Leslie J.; Murphy, Aideen; Rubright, Jonathan; Bear, George; Fifield, Steve

    2010-01-01

    In Spring 2010, the Delaware Education Research and Development Center conducted an evaluation of Delaware's PBS project, an initiative focused on developing a school-wide system of strategies to reduce behavior problems and foster a positive school climate. The study focused on facilitators and barriers to PBS implementation, and also included…

  8. 75 FR 12449 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Amendment to Electric...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-16

    ...EPA is approving a State Implementation Plan (SIP) revision submitted by the State of Delaware. The revision is an amendment to the Electric Generating Unit Multi-Pollutant Regulation of Delaware's Administrative Code, and it modifies the sulfur dioxide (SO2) mass emissions limit associated with Conectiv Edge Moor Unit 5 beginning in calendar year 2009. This action is being taken......

  9. Delaware Middle Schools Beating the Odds. Technical Report Number T2010.4

    ERIC Educational Resources Information Center

    Grusenmeyer, Linda; Fifield, Steve; Murphy, Aideen; Nian, Qinghua; Qian, Xiaoyu

    2010-01-01

    The investigation identified Delaware public and charter middle schools across the state which outperformed other Delaware middle schools with similar student demographic profiles. Teachers and administrators at six of these "Beating the Odds" schools and at six comparison middle schools were surveyed regarding their schools characteristics and…

  10. 33 CFR 167.173 - Off Delaware Bay: Two-Way Traffic Route.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Off Delaware Bay: Two-Way Traffic... SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY OFFSHORE TRAFFIC SEPARATION SCHEMES Description of Traffic Separation Schemes and Precautionary Areas Atlantic East Coast § 167.173 Off Delaware Bay: Two-Way...

  11. 33 CFR 167.173 - Off Delaware Bay: Two-Way Traffic Route.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Off Delaware Bay: Two-Way Traffic... SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY OFFSHORE TRAFFIC SEPARATION SCHEMES Description of Traffic Separation Schemes and Precautionary Areas Atlantic East Coast § 167.173 Off Delaware Bay: Two-Way...

  12. 33 CFR 167.173 - Off Delaware Bay: Two-Way Traffic Route.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Off Delaware Bay: Two-Way Traffic... SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY OFFSHORE TRAFFIC SEPARATION SCHEMES Description of Traffic Separation Schemes and Precautionary Areas Atlantic East Coast § 167.173 Off Delaware Bay: Two-Way...

  13. 33 CFR 167.173 - Off Delaware Bay: Two-Way Traffic Route.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Off Delaware Bay: Two-Way Traffic... SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY OFFSHORE TRAFFIC SEPARATION SCHEMES Description of Traffic Separation Schemes and Precautionary Areas Atlantic East Coast § 167.173 Off Delaware Bay: Two-Way...

  14. 33 CFR 167.173 - Off Delaware Bay: Two-Way Traffic Route.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Off Delaware Bay: Two-Way Traffic... Separation Schemes and Precautionary Areas Atlantic East Coast § 167.173 Off Delaware Bay: Two-Way Traffic Route. The Two-Way Traffic Route is recommended for use predominantly by tug and tow traffic...

  15. 78 FR 57573 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Attainment Plan for the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-19

    ... (PA-NJ-DE) nonattainment area (the ``Philadelphia Area'') on November 19, 2012 (77 FR 69399). Delaware... FR 60053). EPA's November 19, 2012 notice of proposed rulemaking (NPR), proposed to approve Delaware... requirements of CAA as interpreted in EPA's existing implementation rules.\\3\\ \\2\\ See 77 FR 69399. EPA...

  16. Evaluation of Delaware Stars for Early Success: Year 1 Report. Research Report

    ERIC Educational Resources Information Center

    Schwartz, Heather L.; Karoly, Lynn A.; Le, Vi-Nhuan; Tamargo, Jennifer; Setodji, Claude Messan

    2014-01-01

    Delaware was in the first group of states to receive a federal grant in 2012 to improve early care and education services and increase the number of infants, toddlers, and preschool-age children in high-quality programs. One component of the state's grant is a rigorous validation process for Delaware Stars for Early Success, a voluntary quality…

  17. 75 FR 54026 - Safety Zone; Red Bull Flugtag, Delaware River, Camden, NJ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-03

    ... Marina and South of the Benjamin Franklin Bridge. The safety zone will restrict vessel traffic from a... Delaware River in an area described as north of the Wiggins Park Marina and south of the Benjamin Franklin... vessel intending to transit East of Anchorage Area 13 in the Delaware River South of the...

  18. 36 CFR 7.71 - Delaware Water Gap National Recreation Area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Delaware Water Gap National Recreation Area. 7.71 Section 7.71 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.71 Delaware Water Gap National Recreation Area. (a) (b)...

  19. 36 CFR 7.71 - Delaware Water Gap National Recreation Area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 1 2011-07-01 2011-07-01 false Delaware Water Gap National Recreation Area. 7.71 Section 7.71 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.71 Delaware Water Gap National Recreation Area. (a) (b)...

  20. The Delaware Revitalization Movement of the Early 1760s: A Suggested Reinterpretation.

    ERIC Educational Resources Information Center

    Champagne, Duane

    1988-01-01

    Argues that the Delaware Indian revitalization movement was a response to the threatening British hegemonic political and trade situation after the French defeat in 1759. Examines the new moral order proclaimed by the Delaware prophets and the movement's primary goals of political and economic independence. Contains 47 references. (SV)

  1. Literacy at the Core of the Delaware World Language Immersion Programs

    ERIC Educational Resources Information Center

    Fulton-Archer, Lynn

    2013-01-01

    Certain aspects of the implementation of language immersion programs in Delaware are unique given the state's size, demographics, and role in national education initiatives including Race to the Top, Common Core, and Smarter Balance. The Delaware experience typifies what every state, district, or even school goes through as they try to provide…

  2. 75 FR 73116 - Delaware River and Bay Oil Spill Advisory Committee; Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-29

    ... SECURITY Coast Guard Delaware River and Bay Oil Spill Advisory Committee; Meetings AGENCY: Coast Guard, DHS. ACTION: Notice of advisory committee meetings. SUMMARY: The Delaware River and Bay Oil Spill Advisory Committee (DRBOSAC) will meet in Philadelphia, Pennsylvania, to discuss and approve DRBOSAC's report on...

  3. 75 FR 18524 - Delaware River and Bay Oil Spill Advisory Committee; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-12

    ... SECURITY Coast Guard Delaware River and Bay Oil Spill Advisory Committee; Meeting AGENCY: Coast Guard, DHS. ACTION: Notice of meeting. SUMMARY: The Delaware River and Bay Oil Spill Advisory Committee (DRBOSAC) will meet in Philadelphia, PA to discuss and approve DRBOSAC's report on oil spill prevention...

  4. 75 FR 9426 - Delaware River and Bay Oil Spill Advisory Committee; Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-02

    ... SECURITY Coast Guard Delaware River and Bay Oil Spill Advisory Committee; Meeting AGENCY: Coast Guard, DHS. ACTION: Notice of meeting. SUMMARY: The Delaware River and Bay Oil Spill Advisory Committee (DRBOSAC) will meet in Philadelphia, PA to discuss various issues to improve oil spill prevention and...

  5. 75 FR 12561 - Delaware River and Bay Oil Spill Advisory Committee; Meeting Cancelled

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-16

    ... SECURITY Coast Guard Delaware River and Bay Oil Spill Advisory Committee; Meeting Cancelled AGENCY: Coast Guard, DHS. ACTION: Notice of cancellation of meeting. SUMMARY: The Delaware River and Bay Oil Spill... Federal Register on March 2, 2010 (75 FR 9426) is cancelled. FOR FURTHER INFORMATION CONTACT:...

  6. Delaware River: Evidence for its former extension to Wilmington Submarine Canyon

    USGS Publications Warehouse

    Twichell, D.C.; Knebel, H. J.; Folger, D.W.

    1977-01-01

    Seismic-reflection profiles indicate that during the Pleistocene the Delaware River flowed across the continental shelf east of Delaware Bay and emptied into Wilmington Submarine Canyon. The ancestral valley (width, 3 to 8 kilometers; relief, 10 to 30 meters) is buried, is not reflected in the surface topography, and probably predates the formation of the present canyon head.

  7. 78 FR 22785 - Approval and Promulgation of Air Quality Implementation Plans; Delaware, State Board Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-17

    ...EPA is taking direct final action to approve a revision to the Delaware State Implementation Plan (SIP) submitted by the Delaware Department of Natural Resources and Environmental Control (DNREC) on January 11, 2013. The SIP revision addresses requirements of the Clean Air Act (CAA) for all criteria pollutants of the national ambient air quality standards (NAAQS) in relation to State Boards.......

  8. 76 FR 26679 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Requirements for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-09

    ... NO X found in the Federal Register action for Delaware dated July 27, 1993 (58 FR 40065). Delaware's... Quality Standards (1997 Ozone NAAQS)'' (73 FR 16205). EPA's proposed approval of this SIP submission... November 29, 2005 (70 FR 71612) that finalized NO X as a precursor for ozone regulations set forth at...

  9. Delaware Student Testing Program Item Sampler: Released Items for Social Studies, Grades 8 and 11.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover.

    The Delaware Student Testing Program (DSTP) is designed to assess progress toward the Delaware Content Standards. Every year a certain number of items are removed from the test and then selected for public release. This booklet contains multiple-choice and short-answer (constructed response) items released from the 2000 or 2001 administration of…

  10. Delaware's Rural Assistance Council Promotes the Rural Agenda in the First State.

    ERIC Educational Resources Information Center

    VanSciver, James H.

    The Delaware Research for Better Schools Rural Assistance Council's (RAC) mission is to develop a rural assistance agenda for the state. The Council stated four objectives: (1) identifying the most pressing needs of Delaware's rural schools and school districts; (2) developing plans, in cooperation with appropriate state organizations, for…

  11. Delaware River Streamflow Reconstruction using Tree Rings: Exploration of Hierarchical Bayesian Regression

    NASA Astrophysics Data System (ADS)

    Devineni, N.; Lall, U.; Cook, E.; Pederson, N.

    2011-12-01

    We present the application of a linear model in a Hierarchical Bayesian Regression (HBR) framework for reconstructing the summer seasonal averaged streamflow at five stations in the Delaware River Basin using eight newly developed regional tree ring chronologies. This technique directly provides estimates of the posterior probability distribution of each reconstructed streamflow value, considering model parameter uncertainty. The methodology also allows us to shrink the model parameters towards a common mean to incorporate the predictive ability of each tree chronology on multiple stations. We present the results from HBR analysis along with the results from traditional Point by Point Regression (PPR) analysis to demonstrate the benefits of developing the reconstructions under a Bayesian modeling framework. Further, we also present the comparative results of the model validation using various performance evaluation metrics such as reduction in error (RE) and coefficient of efficiency (CE). The reconstructed streamflow at various stations can be utilized to examine the frequency and recurrence attributes of extreme droughts in the region and their potential connections to known low frequency climate modes.

  12. Increased oil production and reserves utilizing secondary/tertiary recovery techniques on small reservoirs in the Paradox Basin, Utah, Class II

    SciTech Connect

    Chidsey, Thomas C.

    2000-07-28

    The primary objective of this project is to enhance domestic petroleum production by field demonstration and technology transfer of an advanced-oil-recovery technology in the Paradox basin, southeastern Utah. If this project can demonstrate technical and economic feasibility, the technique can be applied to approximately 100 additional small fields in the Paradox basin alone, and result in increased recovery of 150 to 200 million barrels (23,850,000-31,800,000 m{sup 3}) of oil. This project is designed to characterize five shallow-shelf carbonate reservoirs in the Pennsylvanian (Desmoinesian) Paradox Formation and choose the best candidate for a pilot demonstration project for either a waterflood or carbon-dioxide-miscible flood project. The field demonstration, monitoring of field performance, and associated validation activities will take place within the Navajo Nation, San Juan County, Utah.

  13. Quantification and probabilistic modeling of CRT obsolescence for the State of Delaware

    SciTech Connect

    Schumacher, Kelsea A.; Schumacher, Thomas; Agbemabiese, Lawrence

    2014-11-15

    Highlights: • We modeled the obsolescence of cathode ray tube devices in the State of Delaware. • 411,654 CRT units or ∼16,500 metric tons have been recycled in Delaware since 2002. • The peak of the CRT obsolescence in Delaware passed by 2012. • The Delaware average CRT recycling rate between 2002 and 13 was approximately 27.5%. • CRTs will continue to infiltrate the system likely until 2033. - Abstract: The cessation of production and replacement of cathode ray tube (CRT) displays with flat screen displays have resulted in the proliferation of CRTs in the electronic waste (e-waste) recycle stream. However, due to the nature of the technology and presence of hazardous components such as lead, CRTs are the most challenging of electronic components to recycle. In the State of Delaware it is due to this challenge and the resulting expense combined with the large quantities of CRTs in the recycle stream that electronic recyclers now charge to accept Delaware’s e-waste. Therefore it is imperative that the Delaware Solid Waste Authority (DSWA) understand future quantities of CRTs entering the waste stream. This study presents the results of an assessment of CRT obsolescence in the State of Delaware. A prediction model was created utilizing publicized sales data, a variety of lifespan data as well as historic Delaware CRT collection rates. Both a deterministic and a probabilistic approach using Monte Carlo Simulation (MCS) were performed to forecast rates of CRT obsolescence to be anticipated in the State of Delaware. Results indicate that the peak of CRT obsolescence in Delaware has already passed, although CRTs are anticipated to enter the waste stream likely until 2033.

  14. 18 CFR 410.1 - Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Register under 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain or inspect a copy at the Delaware River... 18 Conservation of Power and Water Resources 2 2013-04-01 2012-04-01 true Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations. 410.1 Section 410.1 Conservation...

  15. 18 CFR 410.1 - Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Register under 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain or inspect a copy at the Delaware River... 18 Conservation of Power and Water Resources 2 2011-04-01 2011-04-01 false Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations. 410.1 Section 410.1 Conservation...

  16. 18 CFR 410.1 - Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Register under 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain or inspect a copy at the Delaware River... 18 Conservation of Power and Water Resources 2 2012-04-01 2012-04-01 false Basin regulations-Water Code and Administrative Manual-Part III Water Quality Regulations. 410.1 Section 410.1 Conservation...

  17. Advanced Oil Recovery Technologies for Improved Recovery from Slope Basin Clastic Reservoirs, Nash Draw Brushy Canyon Pool, Eddy County, New Mexico, Class III

    SciTech Connect

    Murphy, Michael B.

    2002-02-21

    The overall objective of this project is to demonstrate that a development program based on advanced reservoir management methods can significantly improve oil recovery at the Nash Draw Pool (NDP). The plan includes developing a control area using standard reservoir management techniques and comparing its performance to an area developed using advanced reservoir management methods. Specific goals are (1) to demonstrate that an advanced development drilling and pressure maintenance program can significantly improve oil recovery compared to existing technology applications and (2) to transfer these advanced methodologies to oil and gas producers in the Permian Basin and elsewhere throughout the U.S. oil and gas industry.

  18. Advanced Oil Recovery Technologies for Improved Recovery from Slope Basin Clastic Reservoirs, Nash Draw Brushy Canyon Pool, Eddy County, New Mexico, Class III

    SciTech Connect

    Murphy, Mark B.

    2002-01-16

    The overall objective of this project was to demonstrate that a development program-based on advanced reservoir management methods-can significantly improve oil recovery at the Nash Draw Pool (NDP). The plan included developing a control area using standard reservoir management techniques and comparing its performance to an area developed using advanced reservoir management methods. Specific goals were (1) to demonstrate that an advanced development drilling and pressure maintenance program can significantly improve oil recovery compared to existing technology applications and (2) to transfer these advanced methodologies to oil and gas producers in the Permian Basin and elsewhere throughout the U.S. oil and gas industry.

  19. Evidence for an Early Cretaceous mineralizing event above the basement/sediment unconformity in the intracratonic Paris Basin: paragenetic sequence and Sm-Nd dating of the world-class Pierre-Perthuis stratabound fluorite deposit

    NASA Astrophysics Data System (ADS)

    Gigoux, Morgane; Delpech, Guillaume; Guerrot, Catherine; Pagel, Maurice; Augé, Thierry; Négrel, Philippe; Brigaud, Benjamin

    2015-04-01

    World-class stratabound fluorite deposits are spatially associated with the basement/sediment unconformity of the intracratonic Paris Basin and the Morvan Massif in Burgundy (France). The reserves are estimated to be about 5.5 Mt of fluorite within six fluorite deposits. In this study, we aim to determine the age of the major fluorite mineralization event of the Pierre-Perthuis deposit (1.4 Mt fluorite) by a combined study of the paragenetic mineral sequence and Sm-Nd dating on fluorite crystals. Fluorite occurs as isolated cubes or filling geodes in a Triassic, silicified, dolomitic formation. Three fluorite stages associated with sphalerite, pyrite, galena, barite, and quartz have been distinguished using optical, cathodoluminescence, and scanning electron microscopes. Seven crystals of the geodic fluorite stage were analyzed for their rare earth element (REE) contents and their 147Sm/144Nd and 143Nd/144Nd isotopic compositions. The normalized REE distribution displays homogeneous bell-shaped patterns for all the geodic fluorite samples with a Mid-REE enrichment over the Light-REE and Heavy-REE. The 147Sm/144Nd varies from 0.3108 to 0.5504 and the 143Nd/144Nd from 0.512313 to 0.512518. A six-point Sm-Nd isochron defines an age of 130 ± 15 Ma (initial 143Nd/144Nd = 0.512054, MSWD = 0.21). This Sm-Nd isochron provides the first age for the stratabound fluorite sediment-hosted deposit, related to an unconformity in the Paris Basin, and highlights a major Early Cretaceous fluid circulation event mainly above the basement/sediment unconformity during a flexural deformation of the Paris Basin, which relates to the rifting of the Bay of Biscay and the formation of the Ligurian Sea in the Western Europe domain.

  20. Bioassessment of fish communities of the upper Delaware River

    USGS Publications Warehouse

    van Snik, Gray E.; Ross, R.M.; Bennett, R.M.

    2005-01-01

    We assessed the biotic integrity of the middle-to-upper Delaware River. We sampled fish and assembled water quality data for eight stations and three habitat types (pool, riffle, and submerged aquatic vegetation [SAV]) of the Delaware River and applied an existing index of biotic integrity (IBI) recently developed for the northern mid-Atlantic slope drainages. We used Spearman's correlation to test IBI scores against measures of water quality (WQI) and cultural pollution. IBI scores were not significantly correlated with WQI, but were significantly negatively correlated with sewage load of adjacent tributaries (rs = -0.647, p = 0.08). Sites ranged from good to fair in biotic integrity. Fish assemblage composition from all three habitat types was necessary in order to accurately characterize biotic integrity. Of the three habitat types, fish assemblages from SAV habitats had the greatest positive effect on biotic integrity. Continued application of the IBI may be useful as a long-term monitoring tool as this river corridor becomes increasingly urbanized.

  1. Skylab and ERTS-1 investigations of coastal land use and water properties. [Delaware Bay

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Bartlett, D.; Rogers, R.

    1974-01-01

    The author has identified the following significant results. ERTS-1 multispectral scanner and Skylab's S190A, S190B, and S192 data products were evaluated for their utility in studying current circulation, suspended sediment concentrations and pollution dispersal in Delaware Bay and in mapping coastal vegetation and land use. Imagery from the ERTS-1 MSS, S190A and S190B cameras shows considerable detail in water structure, circulation, suspended sediment distribution and within waste disposal plumes in shelf waters. These data products were also used in differentiating and mapping twelve coastal vegetation and land use classes. The spatial resolution of the S190A multispectral facility appears to be about 30 to 70 meters while that of the S190B earth terrain camera is about 10 to 30 meters. Such resolution, along with good cartographic quality, indicates a considerable potential for mapping coastal land use and monitoring water properties in estuaries and on the continental shelf. The ERTS-1 MSS has a resolution of about 70-100 meters. Moreover, its regular 18-day cycle permits observation of important changes, including the environmental impact of coastal zone development on coastal vegetation and ecology.

  2. Contrasting fish assemblages in free-flowing and impounded tributaries to the Upper Delaware River: Implications for conserving biodiversity

    USGS Publications Warehouse

    Baldigo, Barry P.; Delucia, Mari-Beth; Keller, Walter D.; Schuler, George E.; Apse, Colin D.; Moberg, Tara

    2015-01-01

    The Neversink River and the Beaver Kill in southeastern New York are major tributaries to the Delaware River, the longest undammed river east of the Mississippi. While the Beaver Kill is free flowing for its entire length, the Neversink River is subdivided by the Neversink Reservoir, which likely affects the diversity of local fish assemblages and health of aquatic ecosystems. The reservoir is an important part of the New York City waster-supply system that provides drinking water to more than 9 million people. Fish population and community data from recent quantitative surveys at comparable sites in both basins were assessed to characterize the differences between free-flowing and impounded rivers and the extent of reservoir effects to improve our capacity to define ecosystems responses that two modified flow-release programs (implemented in 2007 and 2011) should produce in the Neversink River. In general, the continuum of changes in fish assemblages which normally occur between headwaters and mouth was relatively uninterrupted in the Beaver Kill, but disrupted by the mid-basin impoundment in the Neversink River. Fish assemblages were also adversely affected at several acidified sites in the upper Neversink River, but not at most sites assessed herein. The reservoir clearly excluded diadromous species from the upper sub-basin, but it also substantially reduced community richness, diversity, and biomass at several mid-basin sites immediately downstream from the impoundment. There results will aid future attempts to determine if fish assemblages respond to more natural, yet highly regulated, flow regimes in the Neversink River. More important, knowledge gained from this study can help optimize use of valuable water resources while promoting species of special concern, such as American eel (Anguilla rostrata) and conserving biodiversity in Catskill Mountain streams.

  3. ADVANCED OIL RECOVERY TECHNOLOGIES FOR IMPROVED RECOVERY FROM SLOPE BASIN CLASTIC RESERVOIRS, NASH DRAW BRUSHY CANYON POOL, EDDY COUNTY, NM

    SciTech Connect

    Mark B. Murphy

    2001-10-31

    The Nash Draw Brushy Canyon Pool (NDP) in southeast New Mexico is one of the nine projects selected in 1995 by the U.S. Department of Energy (DOE) for participation in the Class III Reservoir Field Demonstration Program. The goals of the DOE cost-shared Class Program are to: (1) extend economic production, (2) increase ultimate recovery, and (3) broaden information exchange and technology application. Reservoirs in the Class III Program are focused on slope basin and deep-basin clastic depositional types. Production at the NDP is from the Brushy Canyon formation, a low-permeability turbidite reservoir in the Delaware Mountain Group of Permian, Guadalupian age. A major challenge in this marginal-quality reservoir is to distinguish oil-productive pay intervals from water-saturated non-pay intervals. Because initial reservoir pressure is only slightly above bubble-point pressure, rapid oil decline rates and high gas/oil ratios are typically observed in the first year of primary production. Limited surface access, caused by the proximity of underground potash mining and surface playa lakes, prohibits development with conventional drilling. Reservoir characterization results obtained to date at the NDP show that a proposed pilot injection area appears to be compartmentalized. Because reservoir discontinuities will reduce effectiveness of a pressure maintenance project, the pilot area will be reconsidered in a more continuous part of the reservoir if such areas have sufficient reservoir pressure. Most importantly, the advanced characterization results are being used to design extended reach/horizontal wells to tap into predicted ''sweet spots'' that are inaccessible with conventional vertical wells. The activity at the NDP during the past year has included the completion of the NDP Well No.36 deviated/horizontal well and the completion of additional zones in three wells, the design of the NDP No.33 directional/horizontal well, The planning and regulatory approval for the

  4. Advanced Oil Recovery Technologies for Improved Recovery from Slope Basin Clastic Reservoirs, Nash Draw Brushy Canyon Pool, Eddy County, NM

    SciTech Connect

    Murphy, Mark B.

    1999-02-24

    The Nash Draw Brushy Canyon Pool in Eddy County New Mexico is a cost-shared field demonstration project in the US Department of Energy Class II Program. A major goal of the Class III Program is to stimulate the use of advanced technologies to increase ultimate recovery from slope-basin clastic reservoirs. Advanced characterization techniques are being used at the Nash Draw project to develop reservoir management strategies for optimizing oil recovery from this Delaware reservoir. Analysis, interpretation, and integration of recently acquired geologic, geophysical, and engineering data revealed that the initial reservoir characterization was too simplistic to capture the critical features of this complex formation. Contrary to the initial characterization, a new reservoir description evolved that provided sufficient detail regarding the complexity of the Brushy Canyon interval at Nash Draw. This new reservoir description is being used as a risk reduction tool to identify ''sweet spots'' for a development drilling program as well as to evaluate pressure maintenance strategies. The reservoir characterization, geological modeling, 3-D seismic interpretation, and simulation studies have provided a detailed model of the Brushy Canyon zones. This model was used to predict the success of different reservoir management scenarios and to aid in determining the most favorable combination of targeted drilling, pressure maintenance, well simulation, and well spacing to improve recovery from this reservoir.

  5. Determination of traveltime in the Delaware River, Hancock, New York, to the Delaware Water Gap by use of a conservative dye tracer

    USGS Publications Warehouse

    White, K.E.; Kratzer, T.W.

    1994-01-01

    Traveltime of a soluble substance was determined for a 120-mile reach of the Delaware River from the confluence of the East Branch Delaware River and the West Branch Delaware River at Hancock, N.Y. to the Delaware Water Gap. Dye studies were conducted at the 85-95 percent and the 25-30 percent flow durations. Discharges ranged from 500-1,740 cubic feet per second during the 85-95 percent flow duration and 3,070-7,500 cubic feet per second for the 25-30 percent flow duration. The data were used to develop a set of time-concentration curves that would enable estimation of the traveltime of a spill at any point in the river within the study reach for 10 flow durations. The leading edge of a contaminant spill at Buckingham Access would take about 70 hours to reach the Delaware Water Gap when flows are at the 30-percent flow duration. The trailing edge (location of the dye cloud when concentrations would decrease to 10 percent of the peak concentration) would take about 50 hours after the arrival of the leading edge.

  6. Application of remotely sensed land-use information to improve estimates of streamflow characteristics, volume 8. [Maryland, Virginia, and Delaware

    NASA Technical Reports Server (NTRS)

    Pluhowski, E. J. (Principal Investigator)

    1977-01-01

    The author has identified the following significant results. Land use data derived from high altitude photography and satellite imagery were studied for 49 basins in Delaware, and eastern Maryland and Virginia. Applying multiple regression techniques to a network of gaging stations monitoring runoff from 39 of the basins, demonstrated that land use data from high altitude photography provided an effective means of significantly improving estimates of stream flow. Forty stream flow characteristic equations for incorporating remotely sensed land use information, were compared with a control set of equations using map derived land cover. Significant improvement was detected in six equations where level 1 data was added and in five equations where level 2 information was utilized. Only four equations were improved significantly using land use data derived from LANDSAT imagery. Significant losses in accuracy due to the use of remotely sensed land use information were detected only in estimates of flood peaks. Losses in accuracy for flood peaks were probably due to land cover changes associated with temporal differences among the primary land use data sources.

  7. ASSESSMENT OF THE ECOLOGICAL CONDITION OF THE DELAWARE AND MARYLAND COASTAL BAYS

    EPA Science Inventory

    The coastal bays of Delaware and Maryland are an important ecological and economic resource whose physical characteristics and location make them particularly vulnerable to the effects of pollutants. This project was undertaken as a collaborative effort between state and federal ...

  8. THE DELAWARE BAY DATA BASE: CHEMICAL, HYDROGRAPHIC AND BIOLOGICAL WATER QUALITY DATA (1978-85)

    EPA Science Inventory

    The National Oceanographic Data Center (NODC) compiled the Delaware Bay database containing 1667 records of discrete water quality observations, collected on 40 oceanographic cruises between May 1978 and October 1985. Each record contains 169 fields, listing hydrographic, chemica...

  9. HAER PA,35SCRAN,4F (sheet 1 of 1) Delaware, Lackawanna & ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    HAER PA,35-SCRAN,4-F- (sheet 1 of 1) - Delaware, Lackawanna & Western Railroad, Scranton Yards, Scrap Platform, 350 feet South of South Washington Avenue & River Street, Scranton, Lackawanna County, PA

  10. NAEP Quality Assurance Checks of the 2002 Reading Assessment Results for Delaware. Working Paper Series.

    ERIC Educational Resources Information Center

    Hoffman, R. Gene; Becker, D. E. (Sunny); Wise, Lauress L.

    In March 2003, the National Center for Education Statistics asked the Human Resources Research Organization to participate in a special study of 2002 reading assessment results for Delaware. This working paper summarizes the findings of that study. (AMT)

  11. The 1769 Transit of Venus Observatory in Lewes, Delaware

    NASA Astrophysics Data System (ADS)

    Morrison, J. E.; Thurston, G.

    2013-03-01

    The highest priority astronomical problem of the eighteenth century was to determine the distance from the Earth to the Sun, from which the scale of the entire solar system could be calculated. The most promising method of solving this problem was based on precise measurements of the rare event of a transit of Venus across the Sun's disc. The American Philosophical Society of Philadelphia embarked on an extensive transit observation programme for the 1769 transit with observatories at Statehouse Square - now named Independence Square - in Philadelphia, David Rittenhouse's farm in Norriton, Pennsylvania and a temporary site in Lewes, Delaware. The Lewes team had a very short time to establish an observatory capable of observing the transit, to determine the observatory's geographic coordinates and to document their transit observation. The methods they used to determine the observatory's coordinates are examined in detail and the probable location of the observation site is deduced.

  12. Improving public addiction treatment through performance contracting: the Delaware experiment.

    PubMed

    McLellan, A Thomas; Kemp, Jack; Brooks, Adam; Carise, Deni

    2008-09-01

    In fiscal 2002, Delaware replaced traditional cost-reimbursement contracts with performance-based contracts for all outpatient addiction treatment programs. Incentives included 90% capacity utilization and active patient participation in treatment. One of the programs failed to meet requirements. Strategies adopted by successful programs included extended hours of operation, facility enhancements, salary incentives for counselors, and two evidence-based therapies (MI and CBT). Average capacity utilization from 2001 to 2006 went from 54% to 95%; and the average proportion of patients' meeting participation requirements went from 53% to 70%--with no notable changes in the patient population. We conclude that properly designed, program-based contract incentives are feasible to apply, welcomed by programs and may help set the financial conditions necessary to implement other evidence-based clinical efforts; toward the overall goal of improving addiction treatment. PMID:18325621

  13. Novel Coronavirus and Astrovirus in Delaware Bay Shorebirds

    PubMed Central

    Honkavuori, Kirsi S.; Briese, Thomas; Krauss, Scott; Sanchez, Maria D.; Jain, Komal; Hutchison, Stephen K.; Webster, Robert G.; Lipkin, W. Ian

    2014-01-01

    Background Wild birds are an important but to some extent under-studied reservoir for emerging pathogens. We used unbiased sequencing methods for virus discovery in shorebird samples from the Delaware Bay, USA; an important feeding ground for thousands of migratory birds. Findings Analysis of shorebird fecal samples indicated the presence of a novel astrovirus and coronavirus. A sanderling sample yielded sequences with distant homology to avian nephritis virus 1, an astrovirus associated with acute nephritis in poultry. A ruddy turnstone sample yielded sequences with homology to deltacoronaviruses. Conclusions Our findings highlight shorebirds as a virus reservoir and the need to closely monitor wild bird populations for the emergence of novel virus variants. PMID:24699424

  14. 76 FR 11961 - Safety Zone, Dredging Operations; Delaware River, Marcus Hook, PA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-04

    ...The Coast Guard is establishing a temporary safety zone on the waters of the Delaware River while the Dredge Pullen conducts dredging operations at the Sunoco Marcus Hook docks in the vicinity of the Marcus Hook Range near Marcus Hook, PA. This action is necessary to maintain the 42 ft. berth draft in this portion of the Delaware River. The dredging action will facilitate commerce and safe......

  15. Surface Currents and Winds at the Delaware Bay Mouth

    SciTech Connect

    Muscarella, P A; Barton, N P; Lipphardt, B L; Veron, D E; Wong, K C; Kirwan, A D

    2011-04-06

    Knowledge of the circulation of estuaries and adjacent shelf waters has relied on hydrographic measurements, moorings, and local wind observations usually removed from the region of interest. Although these observations are certainly sufficient to identify major characteristics, they lack both spatial resolution and temporal coverage. High resolution synoptic observations are required to identify important coastal processes at smaller scales. Long observation periods are needed to properly sample low-frequency processes that may also be important. The introduction of high-frequency (HF) radar measurements and regional wind models for coastal studies is changing this situation. Here we analyze synoptic, high-resolution surface winds and currents in the Delaware Bay mouth over an eight-month period (October 2007 through May 2008). The surface currents were measured by two high-frequency radars while the surface winds were extracted from a data-assimilating regional wind model. To illustrate the utility of these monitoring tools we focus on two 45-day periods which previously were shown to present contrasting pictures of the circulation. One, the low-outflow period is from 1 October through 14 November 2007; the other is the high-outflow period from 3 March through 16 April 2008. The large-scale characteristics noted by previous workers are clearly corroborated. Specifically the M2 tide dominates the surface currents, and the Delaware Bay outflow plume is clearly evident in the low frequency currents. Several new aspects of the surface circulation were also identified. These include a map of the spatial variability of the M2 tide (validating an earlier model study), persistent low-frequency cross-mouth flow, and a rapid response of the surface currents to a changing wind field. However, strong wind episodes did not persist long enough to set up a sustained Ekman response.

  16. Mycobacterial infections in striped bass from Delaware Bay

    USGS Publications Warehouse

    Ottinger, C.A.; Brown, J.J.; Densmore, Christine L.; Starliper, C.E.; Blazer, V.S.; Weyers, H.S.; Beauchamp, K.A.; Rhodes, M.W.; Kator, H.; Gauthier, David T.; Vogelbein, W.K.

    2007-01-01

    Eighty striped bass Morone saxatilis were obtained from Delaware Bay using commercial gill nets set adjacent to Woodland Beach (n = 70) and Bowers Beach (n = 10) in December 2003. Fish were examined for gross lesions. Total lengths (TLs) and eviscerated weights were determined to calculate condition factors (K). Portions of spleens were aseptically harvested for bacterial culture, and portions of spleens, kidneys (anterior and posterior), livers, and gonads were obtained for histological examination. The size distribution of the striped bass was relatively homogeneous; the mean TL was about 600 mm for all samples. Mean K exceeded 0.95 in all samples and was not significantly different (P > 0.05) among samples. Significant differences in mycobacterial infection prevalence (P ??? 0.05) were observed among samples; samples obtained at Woodland Beach (WB) on December 10 (53.8%, n = 13) and December 17 (7.1%, n = 42) exhibited the most striking differences in prevalence. Mycobacterial infection intensity ranged from 1 ?? 102 to 1 ?? 107 colony-forming units per gram of spleen. Acanthocephalan infection prevalence and intensity, non-acid-fast bacterial infection prevalence, and fish sex ratio were also significantly different among the samples (P ??? 0.05). Similar to the mycobacterial infections, differences in sex ratio, acanthocephalan infection, and non-acid-fast bacterial infection were observed between the WB samples taken on December 10 and 17. However, no significant associations (P > 0.05) were observed between sex ratio or these infections and mycobacterial infection. The differences in bacterial and parasite infection prevalence and intensity and fish sex ratio in some samples indicate that these fish had a different history and that the epizootiology of mycobacterial infection in striped bass from Delaware Bay may be relatively complex. ?? Copyright by the American Fisheries Society 2007.

  17. Lateral variability of sediment transport in the Delaware Estuary

    NASA Astrophysics Data System (ADS)

    McSweeney, Jacqueline M.; Chant, Robert J.; Sommerfield, Christopher K.

    2016-01-01

    Lateral processes contribute significantly to circulation and material transport in estuaries. The mechanisms controlling transport may vary spatially such that shallow and deep regions of an estuary contribute differently to the total transport. An observational study was conducted to explore the importance of lateral variability in sediment transport mechanisms in the Delaware Estuary. Seven moorings were deployed across the channel in the region of the estuarine turbidity maximum (ETM) zone from April to August 2011. Time series of along-channel sediment transport reveal a consistent pattern of sediment export across the entire estuary during periods of high river discharge, followed by a transition to import within the channel and export on the flanks during low river flow. There is a persistent divergence of across-channel sediment fluxes on the Delaware side, where sediment from the flank is transported toward both the channel and wetland coast. Decomposition of the fluxes highlight that across-channel sediment transport is driven by mean lateral circulation, whereas along-channel transport is driven primarily by mean advection, with tidal pumping contributing to about 30% of total transport. The spatial and temporal variability of mean advection and tidal pumping were generally complementary, with both contributing to the observed sediment transport pathways. Tidal pumping, linked to tidal asymmetries in stratification and sediment resuspension, was shown to drive both ebb-driven export and flood-driven import depending on the tidal variability of stratification. The spatiotemporal patterns of sediment transport highlight the three-dimensional structure of the ETM and shed light on the variability of sediment transport mechanisms.

  18. Martian lake basins and lacustrine plains

    NASA Astrophysics Data System (ADS)

    de Hon, R. A.

    1992-02-01

    A classification of Martian lake basins based on the location of the basin in respect to water sources is proposed. The classes are type 1: valley-head basins; type 2: intravalley basins; type 3: valley-terminal basins; and type 4: isolated basins. Martian lakes are ephemeral features. Many craters and irregular depressions impounded water only until the basins filled and overflowed. Water escaping by spillover rapidly cut crevasses in the downstream side of basins and drained the ponds. Clastic lacustrine sediments collected in the lakes as flowing water lost velocity and turbulence. Evaporitic deposits may be significant in those basins that were not rapidly drained. Sediments deposited in lake basins form smooth, featureless plains. Lacustrine plains are potentially candidate sites for Mars landings and for the search for evidence of ancient life.

  19. Isolation over 35 years in a heated biotest basin causes selection on MHC class IIß genes in the European perch (Perca fluviatilis L.)

    PubMed Central

    Björklund, Mats; Aho, Teija; Behrmann-Godel, Jasminca

    2015-01-01

    Genes that play key roles in host immunity such as the major histocompatibility complex (MHC) in vertebrates are expected to be major targets of selection. It is well known that environmental conditions can have an effect on host–parasite interactions and may thus influence the selection on MHC. We analyzed MHC class IIß variability over 35 years in a population of perch (Perca fluviatilis) from the Baltic Sea that was split into two populations separated from each other. One population was subjected to heating from cooling water of a nuclear power plant and was isolated from the surrounding environment in an artificial lake, while the other population was not subjected to any change in water temperature (control). The isolated population experienced a change of the allelic composition and a decrease in allelic richness of MHC genes compared to the control population. The two most common MHC alleles showed cyclic patterns indicating ongoing parasite–host coevolution in both populations, but the alleles that showed a cyclic behavior differed between the two populations. No such patterns were observed at alleles from nine microsatellite loci, and no genetic differentiation was found between populations. We found no indications for a genetic bottleneck in the isolated population during the 35 years. Additionally, differences in parasitism of the current perch populations suggest that a change of the parasite communities has occurred over the isolation period, although the evidence in form of in-depth knowledge of the change of the parasite community over time is lacking. Our results are consistent with the hypothesis of a selective sweep imposed by a change in the parasite community. PMID:25897384

  20. "Racializing" Class

    ERIC Educational Resources Information Center

    Hatt-Echeverria, Beth; Urrieta, Luis, Jr.

    2003-01-01

    In an effort to explore how racial and class oppressions intersect, the authors use their autobiographical narratives to depict cultural and experiential continuity and discontinuity in growing up white working class versus Chicano working class. They specifically focus on "racializing class" due to the ways class is often used as a copout by…

  1. Collective Bargaining Agreement between the Board of Trustees of Delaware State College and the Delaware State College Chapter of the American Association of University Professors, 1986-1990.

    ERIC Educational Resources Information Center

    Delaware State Coll., Dover.

    The collective bargaining agreement between the board of trustees and the Delaware State College chapter of the American Association of University Professors (AAUP) covering the period 1986 to 1990 is presented. Items covered in the agreement include: definitions; recognition of unit; non-discrimination; rights and privileges (professional dues…

  2. Establishing Proficiency Levels for the Delaware Student Testing Program in Science and Social Studies, Grades 4 & 6. Report and Recommendations to the Delaware State Board of Education.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

    This document contains the results of a standard setting conducted in January 2002 on the Delaware Student Testing Program (DSTP) Science and Social Studies tests at grades 4 and 6. Each standard setting process entailed convening four groups, one for each grade level and content area, and each group met for 2 days. At the standard setting judges…

  3. Designing virtual science labs for the Islamic Academy of Delaware

    NASA Astrophysics Data System (ADS)

    AlZahrani, Nada Saeed

    Science education is a basic part of the curriculum in modern day classrooms. Instructional approaches to science education can take many forms but hands-on application of theory via science laboratory activities for the learner is common. Not all schools have the resources to provide the laboratory environment necessary for hands-on application of science theory. Some settings rely on technology to provide a virtual laboratory experience instead. The Islamic Academy of Delaware (IAD), a typical community-based organization, was formed to support and meet the essential needs of the Muslim community of Delaware. IAD provides science education as part of the overall curriculum, but cannot provide laboratory activities as part of the science program. Virtual science labs may be a successful model for students at IAD. This study was conducted to investigate the potential of implementing virtual science labs at IAD and to develop an implementation plan for integrating the virtual labs. The literature has shown us that the lab experience is a valuable part of the science curriculum (NBPTS, 2013, Wolf, 2010, National Research Council, 1997 & 2012). The National Research Council (2012) stressed the inclusion of laboratory investigations in the science curriculum. The literature also supports the use of virtual labs as an effective substitute for classroom labs (Babateen, 2011; National Science Teachers Association, 2008). Pyatt and Simms (2011) found evidence that virtual labs were as good, if not better than physical lab experiences in some respects. Although not identical in experience to a live lab, the virtual lab has been shown to provide the student with an effective laboratory experience in situations where the live lab is not possible. The results of the IAD teacher interviews indicate that the teachers are well-prepared for, and supportive of, the implementation of virtual labs to improve the science education curriculum. The investigator believes that with the

  4. Nitrogen loads through baseflow, stormflow, and underflow to Rehoboth Bay, Delaware

    USGS Publications Warehouse

    Volk, J.A.; Savidge, K.B.; Scudlark, J.R.; Andres, A.S.; Ullman, W.J.

    2006-01-01

    A detailed study of water and nitrogen (N) discharge from a small, representative subwatershed of Rehoboth Bay, Delaware, was conducted to determine total N loads to the bay. The concentrations of ammonium (NH 4+), nitrate + nitrite (NO3- + NO2-), and dissolved and particulate organic N were determined in baseflow and storm waters discharging from Bundicks Branch from October 1998 to April 2002. A novel hydrographic separation model that accounts for significant decreases in baseflow during storm events was developed to estimate N loads during unsampled storms. Nitrogen loads based on gauged flows alone (7100-19100 kg/yr) significantly underestimated those based on land use-land cover (LULC) and estimated N export factors from different classes of LULC (32000-40600 kg/yr). However, when ungauged underflow and associated N loads were included in the total loads (25500-33800 kg/yr), there was much better agreement with LULC export models. This suggests that in permeable coastal plain sediments, underflow contributes significantly to N fluxes to estuarine receiving waters, particularly in drier years. Based on the similarity in LULC, N loads from the Bundicks Branch subwatershed were used to estimate upland loads to the entire Rehoboth Bay Watershed (259000-316000 kg/yr). These N loads from the watershed were much greater than those from direct atmospheric deposition (49000-64500 kg/yr) and from a local wastewater treatment plant (9700-13700 kg/yr). While the watershed was the principal source of N at all times during the year, the relative contributions from the watershed, wastewater, and direct atmospheric deposition varied predictably with season. ?? ASA, CSSA, SSSA.

  5. Development, calibration, and analysis of a hydrologic and water-quality model of the Delaware Inland Bays watershed

    USGS Publications Warehouse

    Gutierrez-Magness, Angelica L.; Raffensperger, Jeffrey Peter

    2003-01-01

    Excessive nutrients and sediment are among the most significant environmental stressors in the Delaware Inland Bays (Rehoboth, Indian River, and Little Assawoman Bays). Sources of nutrients, sediment, and other contaminants within the Inland Bays watershed include point-source discharges from industries and wastewater-treatment plants, runoff and infiltration to ground water from agricultural fields and poultry operations, effluent from on-site wastewater disposal systems, and atmospheric deposition. To determine the most effective restoration methods for the Inland Bays, it is necessary to understand the relative distribution and contribution of each of the possible sources of nutrients, sediment, and other contaminants. A cooperative study involving the Delaware Department of Natural Resources and Environmental Control, the Delaware Geological Survey, and the U.S. Geological Survey was initiated in 2000 to develop a hydrologic and water-quality model of the Delaware Inland Bays watershed that can be used as a water-resources planning and management tool. The model code Hydrological Simulation Program - FORTRAN (HSPF) was used. The 719-square-kilometer watershed was divided into 45 model segments, and the model was calibrated using streamflow and water-quality data for January 1999 through April 2000 from six U.S. Geological Survey stream-gaging stations within the watershed. Calibration for some parameters was accomplished using PEST, a model-independent parameter estimator. Model parameters were adjusted systematically so that the discrepancies between the simulated values and the corresponding observations were minimized. Modeling results indicate that soil and aquifer permeability, ditching, dominant land-use class, and land-use practices affect the amount of runoff, the mechanism or flow path (surface flow, interflow, or base flow), and the loads of sediment and nutrients. In general, the edge-of-stream total suspended solids yields in the Inland Bays

  6. Climate Change Impacts in the State of Delaware

    NASA Astrophysics Data System (ADS)

    Snyder, C.

    2011-12-01

    The State of Delaware is currently completing its first statewide climate impacts and vulnerability assessment that will provide the foundation for a new statewide adaptation planning process. The assessment focuses on both the observed impacts and the projected impacts on five main sectors: public health and safety; infrastructure and water; industry, agriculture, and forestry; tourism and recreation; and wildlife, plants, and natural ecosystems. Examples of key impacts to the State include loss of wetlands from sea level rise and public health impacts from increased tropospheric ozone and heatwaves. The assessment is a result of collaboration across state agencies, universities, local governments, and non-governmental organizations. We discuss several challenges in translating national and regional research to locally-specific and locally-meaningful impacts necessary for the policy process, adaptation planning, and public outreach. We identify information and research gaps that continue to slow progress at the local and state level. There are lessons learned on how to best engage with policymakers and be relevant and useful for policy planning. Lastly, we give examples of successes in diverse collaborations, public communication of the results, and early policy actions resulting from the findings.

  7. Chlorites in reservoir sandstones of the Guadalupian Delaware Mountain Group

    SciTech Connect

    Walling, S.D. )

    1992-04-01

    Late-stage authigenic clay minerals are pervasive in the very fine-grained, subarkosic sandstones of the Guadalupian Delaware Mountain Group, comprising up to 10% of the bulk rock. Thus, reservoir rock properties are influenced by these minerals. Samples selected from cored intervals, ranging from 600 to 2500 m, were studied using optical and electron microscopy and x-ray diffraction methods to determine the distribution and nature of occurrence of the authigenic clay minerals. In thin sections, the clay minerals are recognizable as grain coatings, with thickness varying from a few micrometers to tens of micrometers. A correlation between the morphology and the amount of interstratification has been observed, with more interstratification corresponding to the formless chlorite variety. The structural and morphological evidence suggests that the chlorites represent different stages of development, possibly evolving from a smectite component through an interstratified intermediate, to a more well-ordered form. There appears to be no systematic trends vertically or laterally in clay mineralogy. The importance of understanding the clay mineralogy and chemistry in these sandstones is evident when considering enhanced recovery procedures. Different clay structures and chemistries may respond differently to production and stimulation techniques. The proposed chlorite diagenetic sequence suggests that drastic changes in borehole fluid chemistry may cause retrogression of chlorite to some expansive forms, which may be water sensitive or inclined to migration.

  8. Positive Behavior Support in Delaware Schools: Developing Perspectives on Implementation and Outcomes. Technical Report No. T2010.3

    ERIC Educational Resources Information Center

    Ackerman, Cheryl M.; Cooksy, Leslie J.; Murphy, Aideen; Rubright, Jonathan; Bear, George; Fifield, Steve

    2010-01-01

    In Spring 2010, the Delaware Education Research and Development Center conducted an evaluation of Delaware's PBS project, an initiative focused on developing a school-wide system of strategies to reduce behavior problems and foster a positive school climate. The study focused on facilitators and barriers to PBS implementation, and also included…

  9. Race to the Top. Delaware Report. Year 1: School Year 2010-2011. [State-Specific Summary Report

    ERIC Educational Resources Information Center

    US Department of Education, 2012

    2012-01-01

    This State-specific summary report serves as an assessment of Delaware's Year 1 Race to the Top implementation, highlighting successes and accomplishments, identifying challenges, and providing lessons learned from implementation to date. Delaware created new structures at the State level to support both State and LEA (local education agency) Race…

  10. 77 FR 21095 - UEK Delaware L.P.; Notice of Declaration of Intention and Soliciting Comments, Protests, and/or...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-09

    ... Energy Regulatory Commission UEK Delaware L.P.; Notice of Declaration of Intention and Soliciting... Intention. b. Docket No: DI12-3-000. c. Date Filed: March 5, 2012. d. Applicant: UEK Delaware L.P. e. Name... into an interstate grid. When a Declaration of Intention is filed with the Federal Energy...

  11. USING EMERGY TO QUANTIFY AN ECONOMIC HIERACHY BETWEEN FOUR U.S. STATES-MARYLAND, DELAWARE, NEW JERSEY, AND PENNSYLVANIA

    EPA Science Inventory

    Using emergy to quantify an economic hierarchy between four U.S. states - Maryland, Delaware, New Jersey and Pennsylvania
    A regional emergy evaluation was completed for each of four adjacent states with differing levels and sources of economic productivity ? Maryland, Delaware...

  12. 78 FR 63972 - Notice of Proposed Methodology for the 2014 Delaware River and Bay Water Quality Assessment Report

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-25

    ... COMMISSION Notice of Proposed Methodology for the 2014 Delaware River and Bay Water Quality Assessment Report... methodology proposed to be used in the 2014 Delaware River and Bay Water Quality Assessment Report is...: Comments will be accepted via email to john.yagecic@drbc.state.nj.us , with ``Water Quality Assessment...

  13. 33 CFR 165.553 - Security Zone; Salem and Hope Creek Generation Stations, Delaware River, Salem County, New Jersey.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Creek Generation Stations, Delaware River, Salem County, New Jersey. 165.553 Section 165.553 Navigation... Limited Access Areas Fifth Coast Guard District § 165.553 Security Zone; Salem and Hope Creek Generation...: the waters of the Delaware River in the vicinity of the Salem and Hope Creek Generation...

  14. 33 CFR 165.553 - Security Zone; Salem and Hope Creek Generation Stations, Delaware River, Salem County, New Jersey.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Creek Generation Stations, Delaware River, Salem County, New Jersey. 165.553 Section 165.553 Navigation... Limited Access Areas Fifth Coast Guard District § 165.553 Security Zone; Salem and Hope Creek Generation...: the waters of the Delaware River in the vicinity of the Salem and Hope Creek Generation...

  15. 33 CFR 165.553 - Security Zone; Salem and Hope Creek Generation Stations, Delaware River, Salem County, New Jersey.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Creek Generation Stations, Delaware River, Salem County, New Jersey. 165.553 Section 165.553 Navigation... Limited Access Areas Fifth Coast Guard District § 165.553 Security Zone; Salem and Hope Creek Generation...: the waters of the Delaware River in the vicinity of the Salem and Hope Creek Generation...

  16. 33 CFR 165.553 - Security Zone; Salem and Hope Creek Generation Stations, Delaware River, Salem County, New Jersey.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Creek Generation Stations, Delaware River, Salem County, New Jersey. 165.553 Section 165.553 Navigation... Limited Access Areas Fifth Coast Guard District § 165.553 Security Zone; Salem and Hope Creek Generation...: the waters of the Delaware River in the vicinity of the Salem and Hope Creek Generation...

  17. 33 CFR 165.553 - Security Zone; Salem and Hope Creek Generation Stations, Delaware River, Salem County, New Jersey.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Creek Generation Stations, Delaware River, Salem County, New Jersey. 165.553 Section 165.553 Navigation... Limited Access Areas Fifth Coast Guard District § 165.553 Security Zone; Salem and Hope Creek Generation...: the waters of the Delaware River in the vicinity of the Salem and Hope Creek Generation...

  18. Big Programs from a Small State: Less Commonly Taught Languages Find Their Home in Delaware Elementary Schools

    ERIC Educational Resources Information Center

    Fulkerson, Gregory

    2009-01-01

    This article describes three big programs from Delaware where the less commonly taught languages find their home in Delaware elementary schools. Odyssey Charter School, located in Wilmington, is one of the very few Greek-language-focused public schools in the nation. The school began in 2006 as a Greek immersion program that concentrated on the…

  19. Delaware Student Testing Program. State Summary Report: Reading, Mathematics, Writing Spring. 2002 Administration: Grades 3, 5, 8, and 10.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

    The results in this report, from the fifth administration of the grades 3, 5, 8, and 10 reading, mathematics, and writing portions of the Delaware Student Testing Program (DSTP), represent an important step in Delawares efforts to educate all students to a higher level. Reading, mathematics, and writing data for grades 3, 5, 8, and 10 are…

  20. Delaware Student Testing Program: State Summary Report: Science & Social Studies, Spring 2002 Administration, Grades 8 and 11.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

    The results from the third administration of the 8th and 11th grade science and social studies portions of the Delaware Student Testing Program (DSTP) represent an important step in Delawares efforts to educate all students to a higher level. Science and social studies data for grades 8 and 11 are summarized here, and the results for grades 4 and…

  1. Delaware Student Testing Program: State Summary Report Science and Social Studies Fall 2002 Administration, Grades 4 and 6.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

    This report contains summaries of the results from the third administration of the fourth and sixth grade science and social studies portions of the Delaware Student Testing Program (DSTP). These results are part of a long-term effort to gather data on the educational progress of Delaware students and to use the data to inform decisions about…

  2. Delaware K-12 & School Choice Survey: What Do Voters Say about K-12 Education? Polling Paper No. 21

    ERIC Educational Resources Information Center

    DiPerna, Paul

    2014-01-01

    The "Delaware K-12 & School Choice Survey" project, commissioned by the Friedman Foundation for Educational Choice and conducted by Braun Research, Inc. (BRI), measures Delaware registered voters' familiarity and views on a range of K-12 education topics and school choice reforms. The author and his colleagues report response levels…

  3. 75 FR 3486 - Susquehanna to Roseland 500kV Transmission Line, Environmental Impact Statement, Delaware Water...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-21

    ...Pursuant to National Environmental Policy Act of 1969, 42 U.S.C. 4332(2)(C), the National Park Service (NPS) is preparing an Environmental Impact Statement (EIS) and conducting public scoping meetings for a construction and right-of-way permit requested from Delaware Water Gap National Recreation Area, Middle Delaware National Scenic and Recreational River, and Appalachian National Scenic......

  4. Near real time water resources data for river basin management

    NASA Technical Reports Server (NTRS)

    Paulson, R. W. (Principal Investigator)

    1973-01-01

    The author has identified the following significant results. Twenty Data Collection Platforms (DCP) are being field installed on USGS water resources stations in the Delaware River Basin. DCP's have been successfully installed and are operating well on five stream gaging stations, three observation wells, and one water quality monitor in the basin. DCP's have been installed at nine additional water quality monitors, and work is progressing on interfacing the platforms to the monitors. ERTS-related water resources data from the platforms are being provided in near real time, by the Goddard Space Flight Center to the Pennsylvania district, Water Resources Division, U.S. Geological Survey. On a daily basis, the data are computer processed by the Survey and provided to the Delaware River Basin Commission. Each daily summary contains data that were relayed during 4 or 5 of the 15 orbits made by ERTS-1 during the previous day. Water resources parameters relays by the platforms include dissolved oxygen concentrations, temperature, pH, specific conductance, well level, and stream gage height, which is used to compute stream flow for the daily summary.

  5. Improving Climate Literacy for Students and Faculty in Higher Education in Maryland and Delaware

    NASA Astrophysics Data System (ADS)

    Veron, D. E.; Wolfson, J.; Ozbay, G.; Fox-Lykens, R.; Benson, S.; Targett, N.; Brickhouse, N.; Shapiro, N.; Boesch, D. F.

    2013-12-01

    The Maryland and Delaware Climate Change Education Assessment and Research (MADE-CLEAR) project is improving climate literacy throughout Maryland and Delaware by bringing together climate science experts with educators. Led by the University System of Maryland and the University of Delaware, the project focuses on middle and high school while engaging universities, state departments of education, and educators from natural resource agencies, aquaria and museums. The MADE-CLEAR team used a survey tool at four universities to assess the amount of climate literacy content present in core science courses taken by pre-service middle and high school teachers. The results of this survey are being used to inform university faculty workshops, improve teacher professional development, and modify and create course content. Results from the survey and the subsequent influence the results may have on higher education courses and both university and K-12 professional development will be discussed.

  6. Developing and testing temperature models for regulated systems: a case study on the Upper Delaware River

    USGS Publications Warehouse

    Cole, Jeffrey C.; Maloney, Kelly O.; Schmid, Matthias; McKenna, James E., Jr.

    2014-01-01

    Water temperature is an important driver of many processes in riverine ecosystems. If reservoirs are present, their releases can greatly influence downstream water temperatures. Models are important tools in understanding the influence these releases may have on the thermal regimes of downstream rivers. In this study, we developed and tested a suite of models to predict river temperature at a location downstream of two reservoirs in the Upper Delaware River (USA), a section of river that is managed to support a world-class coldwater fishery. Three empirical models were tested, including a Generalized Least Squares Model with a cosine trend (GLScos), AutoRegressive Integrated Moving Average (ARIMA), and Artificial Neural Network (ANN). We also tested one mechanistic Heat Flux Model (HFM) that was based on energy gain and loss. Predictor variables used in model development included climate data (e.g., solar radiation, wind speed, etc.) collected from a nearby weather station and temperature and hydrologic data from upstream U.S. Geological Survey gages. Models were developed with a training dataset that consisted of data from 2008 to 2011; they were then independently validated with a test dataset from 2012. Model accuracy was evaluated using root mean square error (RMSE), Nash Sutcliffe efficiency (NSE), percent bias (PBIAS), and index of agreement (d) statistics. Model forecast success was evaluated using baseline-modified prime index of agreement (md) at the one, three, and five day predictions. All five models accurately predicted daily mean river temperature across the entire training dataset (RMSE = 0.58–1.311, NSE = 0.99–0.97, d = 0.98–0.99); ARIMA was most accurate (RMSE = 0.57, NSE = 0.99), but each model, other than ARIMA, showed short periods of under- or over-predicting observed warmer temperatures. For the training dataset, all models besides ARIMA had overestimation bias (PBIAS = −0.10 to −1.30). Validation analyses showed all models performed

  7. Developing and testing temperature models for regulated systems: A case study on the Upper Delaware River

    NASA Astrophysics Data System (ADS)

    Cole, Jeffrey C.; Maloney, Kelly O.; Schmid, Matthias; McKenna, James E.

    2014-11-01

    Water temperature is an important driver of many processes in riverine ecosystems. If reservoirs are present, their releases can greatly influence downstream water temperatures. Models are important tools in understanding the influence these releases may have on the thermal regimes of downstream rivers. In this study, we developed and tested a suite of models to predict river temperature at a location downstream of two reservoirs in the Upper Delaware River (USA), a section of river that is managed to support a world-class coldwater fishery. Three empirical models were tested, including a Generalized Least Squares Model with a cosine trend (GLScos), AutoRegressive Integrated Moving Average (ARIMA), and Artificial Neural Network (ANN). We also tested one mechanistic Heat Flux Model (HFM) that was based on energy gain and loss. Predictor variables used in model development included climate data (e.g., solar radiation, wind speed, etc.) collected from a nearby weather station and temperature and hydrologic data from upstream U.S. Geological Survey gages. Models were developed with a training dataset that consisted of data from 2008 to 2011; they were then independently validated with a test dataset from 2012. Model accuracy was evaluated using root mean square error (RMSE), Nash Sutcliffe efficiency (NSE), percent bias (PBIAS), and index of agreement (d) statistics. Model forecast success was evaluated using baseline-modified prime index of agreement (md) at the one, three, and five day predictions. All five models accurately predicted daily mean river temperature across the entire training dataset (RMSE = 0.58-1.311, NSE = 0.99-0.97, d = 0.98-0.99); ARIMA was most accurate (RMSE = 0.57, NSE = 0.99), but each model, other than ARIMA, showed short periods of under- or over-predicting observed warmer temperatures. For the training dataset, all models besides ARIMA had overestimation bias (PBIAS = -0.10 to -1.30). Validation analyses showed all models performed well; the

  8. Buried Mesozoic rift basins of the U. S. middle Atlantic continental margin

    SciTech Connect

    Benson, R.N. )

    1991-08-01

    The Atlantic continental margin is one of the frontier areas for oil and gas exploration in the US. Most the activity has been offshore where Upper Jurassic-Lower Cretaceous siliciclastic and carbonate rocks have been the drilling objectives, with only one significant but noncommercial gas discover. Onshore, recent exploration activities have focused on early Mesozoic rift basins buried beneath the postrift sediments of the middle Atlantic coastal plain. Many of the basins are of interest because they contain fine-grained lacustrine rocks that have sufficient organic richness, if not lost through hydrocarbon generation, to be classified as source beds for oil or gas. Locations of inferred rift basins beneath the middle Atlantic coastal plain were determined by analysis of drill-hole data in combination with gravity anomaly and aeromagnetic maps. Two basins in Delaware and the Queen Anne basin of Maryland are imaged on a regional Vibroseis profile. Areas enclosing inferred rift basins in the offshore region were mapped from interpretation of seismic reflection profiles. Assuming that petroleum source beds are present in the basin (synrift) rocks, hydrocarbon-generation models (Lopatin method) indicate that for a basin just offshore Delaware that is buried by 7 km of postrift sediments, only dry gas would be present in reservoir rocks; for the Norfolk basin of the Virginia coast buried by only 3 km of postrift rocks, the upper few hundred meters of synrift rocks are still within the oil-generation window. The less deeply buried basins beneath the coastal plain likely are still within the oil window.

  9. New fish-killing alga in coastal Delaware produces neurotoxins.

    PubMed

    Bourdelais, Andrea J; Tomas, Carmelo R; Naar, Jerome; Kubanek, Julia; Baden, Daniel G

    2002-05-01

    Ten fish mortality events, involving primarily Atlantic menhaden, occurred from early July through September 2000 in several bays and creeks in Delaware, USA. Two events involved large mortalities estimated at 1-2.5 million fish in Bald Eagle Creek, Rehoboth Bay. Samples from Indian Inlet (Bethany Beach), open to the Atlantic, as well as from an enclosed area of massive fish kills at nearby Bald Eagle Creek and Torque Canal were collected and sent to our laboratory for analysis. Microscopic examination of samples from the fish kill site revealed the presence of a single-cell Raphidophyte alga Chattonella cf. verruculosa at a maximum density of 1.04 x 10(7) cells/L. Naturally occurring brevetoxins were also detected in the bloom samples. Besides the Chattonella species, no other known brevetoxin-producing phytoplankton were present. Chromatographic, immunochemical, and spectroscopic analyses confirmed the presence of brevetoxin PbTx-2, and PbTx-3 and -9 were confirmed by chromatographic and immunochemical analyses. This is the first confirmed report in the United States of brevetoxins associated with an indigenous bloom in temperate Atlantic estuarine waters and of C. cf. verruculosa as a resident toxic organism implicated in fish kills in this area. The bloom of Chattonella continued throughout September and eventually declined in October. By the end of October C. cf. verruculosa was no longer seen, nor was toxin measurable in the surface waters. The results affirm that to avoid deleterious impacts on human and ecosystem health, increased monitoring is needed for brevetoxins and organism(s) producing them, even in areas previously thought to be unaffected. PMID:12003749

  10. Sand dunes on the central Delmarva Peninsula, Maryland and Delaware

    USGS Publications Warehouse

    Denny, Charles Storrow; Owens, James Patrick

    1979-01-01

    Inconspicuous ancient sand dunes are present in parts of the central Delmarva Peninsula, Maryland and Delaware. Many dunes are roughly V-shaped, built by northwest winds, especially on the east sides of some of the large rivers. On the uplands, the form and spacing of the dunes are variable. A surficial blanket composed mainly of medium and fine-grained sand-the Parsonsburg Sand-forms both the ancient dunes and the broad plains between the dunes. The sand that forms the dunes is massive and intensely burrowed in the upper part; traces of horizontal or slightly inclined bedding appear near the base. Quartz is the dominant mineral constituent of the sand. Microline is abundant in the very fine to fine sand fraction. The heavy-mineral assemblages (high zircon, tourmaline, rutile) are more mature than in most of the possible source rocks. The most abundant minerals in the clay-sized fraction are dioctahedral vermiculite, kaolinite, illite, montmorillonite, and gibbsite. The first four minerals are common in deposits of late Wisconsin and Holocene age. The gibbsite may be detrital, coming from weathered rocks of Tertiary age. The soil profile in the dune sand is weakly to moderately developed. At or near the base of the Parsonsburg Sand are peaty beds that range in age from about 30,000 to about 13,000 radiocarbon years B.P. Microfloral assemblages in the peaty beds suggest that the dunes on the uplands formed in a spruce parkland during the late Wisconsin glacial maximum. The river dunes may also be of late Wisconsin age, but could be Holocene.

  11. Persistence and Agility: The Rodel Foundation of Delaware's Efforts to Transform Delaware's Education System. Principles for Effective Education Grantmaking. Case Study Number 8

    ERIC Educational Resources Information Center

    Alvord, Sarah

    2012-01-01

    It was 8:45 a.m. on Monday, March 29, 2010, when Paul Herdman got the stunning news. Just two states had won first-round grants in the Race to the Top competition, the largest federal competition of its kind in American history, out of 40 state applicants. Herdman joined the Rodel Foundation of Delaware (Rodel) as President and CEO in 2004. The…

  12. Concentrations and transport of atrazine in the Delaware River-Perry Lake system, northeast Kansas, July 1993 through September 1995

    USGS Publications Warehouse

    Pope, L.M.; Brewer, L.D.; Foley, G.A.; Morgan, S.C.

    1996-01-01

    A study of the distribution and transport of atrazine in surface water in the 1,117 square-mile Delaware River Basin in northeast Kansas was conducted from July 1992 through September 1995. The purpose of this report is to present information to assess the present (1992-95) conditions and possible future changes in the distribution and magnitude of atrazine concentrations, loads, and yields spatially, temporally, and in relation to hydrologic conditions and land-use characteristics. A network of 11 stream-monitoring and sample-collection sites was established within the basin. Stream- water samples were collected during a wide range of hydrologic conditions throughout the study. Nearly 5,000 samples were analyzed by enzyme- linked immunosorbent assay (ELISA) for triazine herbicide concentrations. Daily mean triazine herbicide concentrations were calculated for all sampling sites and subsequently used to estimate daily mean atrazine concentrations with a linear- regression relation between ELISA-derived triazine concentrations and atrazine concentrations determined by gas chromatography/mass spectrometry for 141 dual-analyzed surface-water samples. During May, June, and July, time-weighted, daily mean atrazine concentrations in streams in the Delaware River Basin commonly exceeded the value of 3.0-ug/L (micrograms per liter) annual mean Maximum Contaminant Level (MCL) established by the U.S. Environmental Protection Agency for drinking-water supplies. Time-weighted, daily mean concentrations equal to or greater than 20 ug/L were not uncommon. However, most time- weighted, daily mean concentrations were less than 1.0 ug/L from August through April. The largest time-weighted, monthly mean atrazine concentrations occurred during May, June, and July. Most monthly mean concentrations between August and April were less than 0.50 ug/L. Large differences were documented in monthly mean concentrations within the basin. Sites receiving runoff from the northern and

  13. Class Size.

    ERIC Educational Resources Information Center

    Underwood, Siobhan; Lumsden, Linda S.

    1994-01-01

    The items featured in this annotated bibliography touch on several aspects of the multifaceted class-size debate. Allen Odden reviews the literature and contends that class-size reduction should be used "sparingly and strategically." C. M. Achilles and colleagues examines two different class-size situations and find student test performance in the…

  14. Class Size.

    ERIC Educational Resources Information Center

    Johnston, Holly R.

    Exploring the class-size issue, this paper focuses on the primary grades and asks questions such as "does a reduction in class size promote an increase in academic achievement?" and "how substantial does the reduction in numbers have to be in order for a significant increase to occur?" The paper surveys debates on class size and the social factors…

  15. Class Matters

    ERIC Educational Resources Information Center

    Valdata, Patricia

    2005-01-01

    Ever since George Washington opted for the title of president rather than king, Americans have been uncomfortable with the idea of class distinctions. This article presents an interview with Dr. Janet Galligani Casey regarding the idea of class distinctions. Galligani Casey, who grew up in a working-class neighborhood in Somerville, Massachusetts,…

  16. 78 FR 40399 - Safety Zone; Fifth Coast Guard District Fireworks Displays, Delaware River; Philadelphia, PA.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-05

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Fifth Coast Guard District Fireworks Displays, Delaware River; Philadelphia, PA. AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is temporarily changing the enforcement date of a safety zone for one...

  17. USDA food-borne virus research initiatives at Delaware State University

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The USDA ARS Microbial Safety of Aquaculture Products Center of Excellence located on the campus of Delaware State University is conducting research geared toward; 1) improving detection methods for virus contamination of shellfish; 2) understanding how and why viruses persist within shellfish; and ...

  18. Guidelines for Physical Therapy Practice in Educational Environments in the State of Delaware.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover. Exceptional Children/Special Programs Div.

    These guidelines are intended to provide a student-focused model for integration of physical therapy services in educational environments in Delaware. Individual sections address the following: definitions; services (referral, assessment, direct, and indirect); the educational significance of physical therapy services; prioritizing physical…

  19. Guidelines for Occupational Therapy Practice in Educational Environments in the State of Delaware.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover. Exceptional Children/Special Programs Div.

    These guidelines are intended to direct the provision of quality occupational therapy services in educational environments in Delaware. The first section presents a discussion of definitions concerned with: (1) free appropriate public education; (2) related services; (3) occupational therapy services; (4) physical therapy services; and (5)…

  20. 75 FR 27507 - Safety Zone; Delaware River, Big Timber Creek, Westville, NJ

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-17

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA08 Safety Zone; Delaware River, Big Timber Creek, Westville... is intended to temporarily restrict vessel traffic in the regulated area within Big Timber Creek..., go to http://www.regulations.gov , click on the ``submit a comment'' box, which will then...

  1. BIOREMEDIATION OF CRUDE OIL RELEASED ON A SANDY BEACH IN DELAWARE

    EPA Science Inventory

    A statistical approach was used to determine if mineral nutrient addition and/or microbial inoculation enhances the loss of crude oil experimentally released onto plots on the shoreline of Delaware Bay. ive replicates of three treatments were examined (nutrients alone, nutrients ...

  2. 76 FR 79537 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Adhesives and Sealants Rule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-22

    ...EPA is approving a State Implementation Plan (SIP) revision submitted by the State of Delaware. The revision adds section 4.0, under Regulation 1141, relating to the control of emissions of volatile organic compounds (VOC) from the manufacture, sale, use, or application of adhesives, sealants, primers, and solvents. EPA is approving this SIP revision to meet the requirements of a reasonably......

  3. Project Pet: Preserving Ethnic Traditions through Delaware High School Student Research.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Public Instruction, Dover.

    The final product of an ethnic heritage studies project entitled Preserving Ethnic Traditions (PET), the document presents photographs and transcriptions of interviews by high school students with members of various ethnic groups. Carried out by 50 high school students from seven Delaware school districts, the interviews focus on values, cuisine,…

  4. 78 FR 4167 - Commercial Wind Lease Issuance on the Atlantic Outer Continental Shelf Offshore Delaware

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ... Bureau of Ocean Energy Management Commercial Wind Lease Issuance on the Atlantic Outer Continental Shelf... Availability of a Commercial Lease of Submerged Lands for Renewable Energy on the Outer Continental Shelf... (Bluewater) for an area of the Outer Continental Shelf (OCS) offshore Delaware. The purpose of this notice...

  5. Paleochannels of the Delaware River on the mid-Atlantic shelf

    SciTech Connect

    Krantz, D.E. . Coll. of Marine Studies); McGeary, S.E.; Madsen, J.A. . Dept. of Geology); Gayes, P.T. . Dept. of Geology and Marine Science)

    1993-03-01

    Shallow seismic data recently collected from the inner and middle continental shelf off Delaware reveal what appears to be a relatively complete stratigraphic record of middle to late Pleistocene sea-level events. At least four separate paleochannels of the Delaware River that have been identified and traced across the inner and middle shelf can be projected to the major submarine canyons of the continental slope. These same channels can be traced landward through the modern Delaware Bay to the fluvial portion of the Delaware River; two of these paleochannels trend underneath the peninsula of Cape May. The relative ages of the channels have been inferred from superposition and cross-cutting relationships. Subsurface reflectors associated with these paleochannels can be traced laterally to define the shallow flanks of estuaries formed as the valley was flooded during a subsequent transgression. In two cases, the depositional margins identified in the seismic profiles coincide with distinct geomorphic boundaries on the seafloor, delimiting allostratigraphic units interpreted as Pleistocene estuaries that are preserved on the modern shelf. The complementary highstands for this system are preserved on the emergent coastal plain as shoreline complexes and paralic sequences. These data reveal a much more intricate preserved record than previously realized, and change substantially the current models for the Quaternary development of the shelf.

  6. The Effect of Proposed Reagan Administration Cuts on University of Delaware Financial Aid Programs. Special Report.

    ERIC Educational Resources Information Center

    MacDonald, Douglas S.

    Proposed budget cuts by the Reagan Administration that will directly affect the financial aid programs at the University of Delaware are examined, along with the anticipated impacts of the cuts. The programs specifically slated for reduction in both funds and the number of students who will be eligible to participate in 1981-82 include the…

  7. Understanding Transfer Students at the University of Delaware: Transition Experiences and Recommendations for Improving Services

    ERIC Educational Resources Information Center

    Quinci, Carolyn Eaton

    2012-01-01

    Transfer students comprise about ten percent of the student population in the College of Arts and Sciences (CAS) at the University of Delaware. This research presents findings from a mixed methods study investigating the transition experiences of transfer students in the college. Demographic data were gathered on CAS transfer students admitted to…

  8. 75 FR 77758 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Limiting Emissions of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-14

    ... predominantly refueled with portable containers. On November 22, 2002 (67 FR 57776), EPA approved the previous... containers (see, 72 FR 8428). The Federal rule provides more stringent emission control of portable fuel... regulation (see, 72 FR 8428). III. Final Action EPA is approving the Delaware SIP revision pertaining...

  9. 75 FR 77798 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Limiting Emissions of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-14

    ... Emissions of Volatile Organic Compounds From Portable Fuel Containers AGENCY: Environmental Protection...'s regulation for Volatile Organic Compounds (VOC) from Consumer and Commercial Products, Section 3.0... Implementation Plans; Delaware; Limiting Emissions of Volatile Organic Compounds from Portable Fuel...

  10. 77 FR 22224 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Amendments to the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-13

    ..., 2012 (77 FR 5207), EPA published a notice of proposed rulemaking (NPR) for the State of Delaware. The... Management and Budget under Executive Order 12866 (58 FR 51735, October 4, 1993); Does not impose an...); Does not have Federalism implications as specified in Executive Order 13132 (64 FR 43255, August...

  11. DEMOGRAPHIC FACTORS ASSOCIATED WITH HIGHER EDUCATION IN DELAWARE AND ENROLLMENT PROJECTIONS FROM 1966 TO 1975.

    ERIC Educational Resources Information Center

    BROWN, C. HAROLD

    DURING THE 20TH CENTURY, DELAWARE'S POPULATION GROWTH HAS PARALLELED THAT OF THE COUNTRY AS A WHOLE, ALTHOUGH THE GROWTH HAS NOT BEEN EVENLY DISTRIBUTED THROUGHOUT THE STATE. NEED FOR EXPANSION OF THE STATE'S HIGHER EDUCATION OPPORTUNITIES WAS INDICATED BY TWO FACTORS--(1) THE TREND IN THE BIRTH RATE, WHICH LED TO A PROJECTION OF A 1975 COLLEGE…

  12. 75 FR 32858 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Control of Nitrogen...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-10

    ... From the Federal Register Online via the Government Publishing Office ] ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 52 Approval and Promulgation of Air Quality Implementation Plans; Delaware; Control of Nitrogen Oxide Emissions From Industrial Boilers and Process Heaters at Petroleum Refineries Correction...

  13. Food safety research at Delaware State University: keeping the runs from slowing you down

    Technology Transfer Automated Retrieval System (TEKTRAN)

    For more than a decade, the USDA ARS Center of Excellence located within the Delaware State University College of Agriculture and Related Sciences has been focused on foodborne virus research with special emphasis on bivalve shellfish. Research accomplishments include: 1) development of expedient e...

  14. 33 CFR 165.535 - Safety Zone: Atlantic Ocean, Vicinity of Cape Henlopen State Park, Delaware.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Safety Zone: Atlantic Ocean, Vicinity of Cape Henlopen State Park, Delaware. 165.535 Section 165.535 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS...

  15. Application of LANDSAT-2 to the management of Delaware's marine and wetland resources

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Bartlett, D.; Philpot, W.; Davis, G.

    1976-01-01

    The author has identified the following significant results. Imagery from LANDSAT 1 and 2 was analyzed to determine the location, type, and extent of fronts and boundaries in Delaware Bay as a function of tidal conditions. This information is being used to set up a subroutine for an oil slick movement prediction model.

  16. 77 FR 68800 - Delaware; Amendment No. 1 to Notice of an Emergency Declaration

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-16

    ... SECURITY Federal Emergency Management Agency Delaware; Amendment No. 1 to Notice of an Emergency Declaration AGENCY: Federal Emergency Management Agency, DHS. ACTION: Notice. SUMMARY: This notice amends the... Miller, Office of Response and Recovery, Federal Emergency Management Agency, 500 C Street...

  17. 33 CFR 165.535 - Safety Zone: Atlantic Ocean, Vicinity of Cape Henlopen State Park, Delaware.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Safety Zone: Atlantic Ocean... Guard District § 165.535 Safety Zone: Atlantic Ocean, Vicinity of Cape Henlopen State Park, Delaware. (a) Location. The following area is a safety zone: All waters of the Atlantic Ocean within the area bounded...

  18. 77 FR 75384 - Approval and Promulgation of Air Quality Implementation Plans; Indiana; Delaware County (Muncie...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-20

    ... 77 FR 65341). Additional information for today's action is contained in EPA's October 26, 2012... 40 CFR 93.118(e)(4). The basis for this conclusion is contained in the proposed approval (77 FR 65341... Budgets for Delaware County, Indiana Year 2015 Nitrogen oxides tons/day 7.02 Volatile organic...

  19. An Evaluation of the Delaware State Public Elementary and Secondary Educational Equalization Laws.

    ERIC Educational Resources Information Center

    Link, Charles R.; And Others

    In the wake of court decisions in the cases of "Serrano v. Priest,""San Antonio Independent School District v. Rodriguez," and "Robinson v. Cahill," Congress set aside funds as part of Public Law 93-380 for state departments of education to study the equitability of current educational funding arrangements. This document analyzes Delaware's…

  20. Race to the Top. Delaware. State-Reported APR: Year One

    ERIC Educational Resources Information Center

    US Department of Education, 2012

    2012-01-01

    This paper describes Delaware's progress in implementing a comprehensive and coherent approach to education reform from the time of application through June 30, 2011. In particular, it highlights key accomplishments over the reporting period in the four reform areas: standards and assessments, data systems to support instruction, great teachers…

  1. 33 CFR 165.T05-0511 - Safety Zone, Delaware River; Philadelphia, PA.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... regulations governing safety zones in 33 CFR 165.33. (1) All persons or vessels wishing to transit through the... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Safety Zone, Delaware River... HOMELAND SECURITY (CONTINUED) PORTS AND WATERWAYS SAFETY REGULATED NAVIGATION AREAS AND LIMITED...

  2. 33 CFR 100.T05-0443 - Safety Zone; Fireworks Display, Delaware River, New Hope, PA.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Safety Zone; Fireworks Display..., DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.T05-0443 Safety Zone; Fireworks Display, Delaware River, New Hope, PA. (a) Location. The safety zone will...

  3. 78 FR 13496 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Prevention of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-28

    ... INFORMATION: I. Background On October 29, 2012 (77 FR 65518), EPA published a notice of proposed rulemaking..., 2010 in the Tailoring Rule (75 FR 31514). The SIP revision modifies Delaware's PSD program at 7 DE... action'' subject to review by the Office of Management and Budget under Executive Order 12866 (58...

  4. A PREDICTIVE MODEL FOR ANTI-DEGRADATION MONITORING OF THE DELAWARE RIVER

    EPA Science Inventory

    The non-tidal portion of the Delaware River consists of many large sections designated as Wild and Scenic Rivers and passes through two national parks. Although there is increasing pressure on the watershed, large sections of the mainstem of the river can be considered to be in m...

  5. A Quantitative Analysis of the Increase in Public School Segregation in Delaware: 1989-2006

    ERIC Educational Resources Information Center

    Glenn, William J.

    2011-01-01

    This study analyzes the increase in school segregation in Delaware from a quantitative perspective. The article tests the hypothesis that the declaration of unitary status that released the Wilmington area school districts from their desegregation order caused the increase in segregation. The research reveals that the declaration of unitary status…

  6. 75 FR 48627 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Administrative and Non...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-11

    ...; Administrative and Non-Substantive Changes to Existing Delaware SIP Regulations AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule. SUMMARY: EPA proposes to approve the State Implementation Plan (SIP... Implementation Plan (SIP). In the Final Rules section of this Federal Register, EPA is approving the State's...

  7. Improving Anti-Rape Policy and Education at the University of Delaware

    ERIC Educational Resources Information Center

    Schiffman, Jessica

    2010-01-01

    It is incumbent on colleges and universities to evaluate the conditions that lead to sexual assault on their campuses and to address those that may support a climate that encourages or tolerates rape. Though various policies and educational programs attempt to mitigate the problem, still it persists. The University of Delaware has not engaged in a…

  8. Knocking at the College Door: Projections of High School Graduates. Delaware

    ERIC Educational Resources Information Center

    Western Interstate Commission for Higher Education, 2013

    2013-01-01

    National and regional trends mask important variation among states in the supply of high school graduates. This profile provides brief indicators for Delaware related to: current levels of educational attainment, projections of high school graduates into the future, and two common barriers to student access and success--insufficient academic…

  9. Inquiry into Charges of Mismanagement in Delaware's Vocational Rehabilitation, Employment, and Social Services Programs.

    ERIC Educational Resources Information Center

    Comptroller General of the U.S., Washington, DC.

    The report by the comptroller general of the United States is directed toward an inquiry into charges of misuse of Federal funds in Delaware's vocational rehabilitation program. Significant program developments are reviewed to provide background data in understanding the specific charges. The charges involved: administrative salaries, cancelling…

  10. State Teacher Policy Yearbook: Progress on Teacher Quality, 2007. Delaware State Summary

    ERIC Educational Resources Information Center

    National Council on Teacher Quality, 2007

    2007-01-01

    The "State Teacher Policy Yearbook" examines what is arguably the single most powerful authority over the teaching profession: state government. This Delaware edition of the National Council on Teacher Quality's (NCTQ's) "State Teacher Policy Yearbook" is the first of what will be an annual look at the status of state policies impacting the…

  11. 78 FR 39601 - Safety Zone, Sugar House Casino Fireworks Display, Delaware River; Philadelphia, PA

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-02

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone, Sugar House Casino Fireworks Display... action is necessary to provide for the safety of life and property in the navigable water. In addition... out zone that covers part of the Delaware River. Sugar House Casino has contracted with...

  12. Equinox. A Model for the Environmental Education Curriculum for Kindergarten Through Grade Twelve in Delaware's Schools.

    ERIC Educational Resources Information Center

    Baker, Thomas M.; Reiher, John F.

    This publication represents the state model for environmental education curriculum for kindergarten through grade twelve in Delaware's schools. The document defines environmental education, lists major curriculum objectives and guidelines, and stresses the importance of the interdisciplinary approach. Four model units, representing the grade level…

  13. 33 CFR 334.120 - Delaware Bay off Milford Neck; naval aircraft bombing target area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...; naval aircraft bombing target area. 334.120 Section 334.120 Navigation and Navigable Waters CORPS OF....120 Delaware Bay off Milford Neck; naval aircraft bombing target area. (a) The danger zone. A circular... Commandant, Fourth Naval District, and such agencies as he may designate....

  14. 33 CFR 334.110 - Delaware Bay off Cape Henlopen, Del.; naval restricted area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., Del.; naval restricted area. 334.110 Section 334.110 Navigation and Navigable Waters CORPS OF....110 Delaware Bay off Cape Henlopen, Del.; naval restricted area. (a) The area. Beginning at a point on... regulations in this section shall be enforced by the Commandant, Fourth Naval District, and such agencies...

  15. 33 CFR 334.120 - Delaware Bay off Milford Neck; naval aircraft bombing target area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...; naval aircraft bombing target area. 334.120 Section 334.120 Navigation and Navigable Waters CORPS OF....120 Delaware Bay off Milford Neck; naval aircraft bombing target area. (a) The danger zone. A circular... Commandant, Fourth Naval District, and such agencies as he may designate....

  16. 33 CFR 334.110 - Delaware Bay off Cape Henlopen, Del.; naval restricted area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., Del.; naval restricted area. 334.110 Section 334.110 Navigation and Navigable Waters CORPS OF....110 Delaware Bay off Cape Henlopen, Del.; naval restricted area. (a) The area. Beginning at a point on... regulations in this section shall be enforced by the Commandant, Fourth Naval District, and such agencies...

  17. Geothermal energy: tomorrow's alternative today. A handbook for geothermal-energy development in Delaware

    SciTech Connect

    Mancus, J.; Perrone, E.

    1982-08-01

    This is a general procedure guide to various technical, economic, and institutional aspects of geothermal development in Delaware. The following are covered: geothermal as an alternative, resource characteristics, geology, well mechanics and pumping systems, fluid disposal, direct heat utilization-feasibility, environmental and legal issues, permits and regulations, finance and taxation, and steps necessary for geothermal development. (MHR)

  18. 78 FR 63877 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Infrastructure...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-25

    ...EPA is approving a State Implementation Plan (SIP) revision submitted by the State of Delaware. The SIP revision addresses the infrastructure elements of the Clean Air Act (CAA), necessary to implement, maintain, and enforce the 2010 nitrogen dioxide (NO2) national ambient air quality standard (NAAQS). EPA is approving this SIP revision in accordance with the requirements of the...

  19. 77 FR 55419 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Section 110(a)(2...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-10

    ... infrastructure elements: CAA section 110(a)(2)(C), (D) and (J). See 77 FR 45527 (August 1, 2012). IV. Statutory... environmental effects, using practicable and legally permissible methods, under Executive Order 12898 (59 FR..., 2012 (77 FR 39456), EPA published a notice of proposed rulemaking (NPR) for the State of Delaware....

  20. 77 FR 12608 - Delaware; Amendment No. 1 to Notice of an Emergency Declaration

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-01

    ... SECURITY Federal Emergency Management Agency Delaware; Amendment No. 1 to Notice of an Emergency Declaration AGENCY: Federal Emergency Management Agency, DHS. ACTION: Notice. SUMMARY: This notice amends the... Miller, Office of Response and Recovery, Federal Emergency Management Agency, 500 C Street...

  1. Delaware Stars for Early Success. QRS Profile. The Child Care Quality Rating System (QRS) Assessment

    ERIC Educational Resources Information Center

    Child Trends, 2010

    2010-01-01

    This paper presents a profile of Delaware's Stars for Early Success prepared as part of the Child Care Quality Rating System (QRS) Assessment Study. The profile consists of several sections and their corresponding descriptions including: (1) Program Information; (2) Rating Details; (3) Quality Indicators for Center-Based Programs; (4) Indicators…

  2. Shared-Time versus Full-Time Vocational High Schools in Delaware: An Assessment.

    ERIC Educational Resources Information Center

    Hoachlander, E. Gareth; Tuma, John E.

    A study was undertaken to determine whether Delaware should attempt to maintain two shared-time area vocational schools or whether the schools should be converted to full-time vocational high schools. A number of state and local officials, including all of the superintendents in Kent and Sussex Counties, were interviewed and documents were…

  3. 76 FR 66768 - Delaware Disaster #DE-00012, Declaration of Economic Injury

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-27

    ... ADMINISTRATION Delaware Disaster DE-00012, Declaration of Economic Injury AGENCY: U.S. Small Business Administration. ACTION: Notice. SUMMARY: This is a notice of an Economic Injury Disaster Loan (EIDL) declaration... the Administrator's EIDL declaration, applications for economic injury disaster loans may be filed...

  4. The implementation and utility of fire incident reporting systems: the Delaware experience.

    PubMed

    Bergen, Gwendolyn; Frattaroli, Shannon; Ballesteros, Michael F; Ta, Van M; Beach, Crystal; Gielen, Andrea C

    2008-04-01

    Fires and burns are the fifth most common cause of unintentional injury deaths in the United States. To address fires and fire deaths, the National Fire Data Center (NFDC) established the National Fire Incident Reporting System (NFIRS) as a surveillance system for fires. Delaware implemented NFIRS as the Delaware Fire Incident Reporting System (DFIRS), and is currently capturing all fires reported in the system. The objectives of this study are to: 1) understand the implementation of DFIRS; 2) analyze data from DFIRS to describe fire incidents; and 3) inform other states' fire surveillance efforts. We interviewed Delaware State Fire Marshal's Office personnel to understand the implementation of DFIRS and analyzed DFIRS data from May 2003 to December 2004 to examine data completeness, and characteristics of fires, smoke alarms, and fire injuries and deaths. DFIRS captures 100% of Delaware fires reported to fire departments. Data completeness for the fields examined ranged from 33% to 100%. Fires in which smoke alarms alerted occupants were significantly less likely to result in injury or death than fires in which smoke alarms did not. DFIRS has the potential to serve as a valuable fire prevention and fire analysis tool. For DFIRS to reach its full potential as a surveillance system, increased attention to data completeness is necessary. PMID:18074209

  5. 77 FR 28489 - Approval and Promulgation of Air Quality Implementation Plans; Delaware; Amendments to the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-15

    ... (77 FR 3211), EPA published a notice of proposed rulemaking (NPR) for the State of Delaware. The NPR... review by the Office of Management and Budget under Executive Order 12866 (58 FR 51735, October 4, 1993... Executive Order 13132 (64 FR 43255, August 10, 1999); Is not an economically significant regulatory...

  6. Delaware Student Testing Program: A Score Results Guide for Boards and Administrators.

    ERIC Educational Resources Information Center

    Delaware State Dept. of Education, Dover. Assessment and Accountability Branch.

    This guide describes the Delaware Student Testing Program (DSTP) and includes information about the program and its results that will be useful for administrators and members of boards of education. In spring 1998, the Department of Education, in conjunction with Harcourt Educational Measurement, began its annual administration of the DSTP…

  7. BIOREMEDIATION OF AN EXPERIMENTAL OIL SPILL ON THE SHORELINE OF DELAWARE BAY

    EPA Science Inventory

    In the summer of 1994, a field study was undertaken in Delaware in which light crude oil was intentionally released onto plots to evaluate bioremediation. The objectives were to obtain credible statistical evidence to determine if bioremediation with inorganic mineral nutrients ...

  8. TOXICITY TRENDS DURING AN OIL SPILL BIOREMEDIATION EXPERIMENT ON A SANDY SHORELINE IN DELAWARE, USA

    EPA Science Inventory

    A 13-week, refereed, inter-agency toxicity testing program involving five bioassay methods was used to document the effectiveness of shoreline bioremediation to accelerate toxicity reduction of an oiled sandy shoreline at Fowler Beach, Delaware, USA. The study was part of an inte...

  9. 75 FR 76036 - Charming Shoppes of Delaware, Inc. Accounts Payable, Rent, Merchandise Disbursement Divisions...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-07

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF LABOR Employment and Training Administration Charming Shoppes of Delaware, Inc. Accounts Payable, Rent, Merchandise Disbursement Divisions, and Payroll Department Within the Shared Service Center, Bensalem, PA; Amended Certification Regarding Eligibility To...

  10. First report of the sting nematode Belonolaimus longicaudatus on Soybean in Delaware

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In August 2005, several large irregular areas of severely chlorotic, stunted and dead soybean plants were observed in two fields of soybean (Glycine max) 5 miles apart, in very sandy soil (94% sand, 2% silt, 4% clay) in southwestern Sussex county, Delaware. The grower also had observed stunted corn ...

  11. Connecting onshore and offshore near-surface geology: Delaware's sand inventory project

    USGS Publications Warehouse

    Ramsey, K.W.; Jordan, R.R.; Talley, J.H.

    1999-01-01

    Beginning in 1988, the Delaware Geological Survey began a program to inventory on-land sand resources suitable for beach nourishment. The inventory included an assessment of the native beach textures using existing data and developing parameters of what would be considered suitable sand textures for Delaware's Atlantic beaches. An assessment of the economics of on-land sand resources was also conducted, and it was determined that the cost of the sand was competitive with offshore dredging costs. In addition, the sand resources were put into a geologic context for purposes of predicting which depositional environments and lithostratigraphic units were most likely to produce suitable sand resources. The results of the work identified several suitable on-land sand resource areas in the Omar and Beaverdam formations that were deposited in barrier-tidal delta and fluvial-estuarine environments, respectively. The identified on-land resources areas have not been utilized due to difficulties of truck transport and development pressures in the resource areas. The Delaware Geological Survey's participation in years 8, 9, and 10 of the Continental Margins Program was developed to extend the known resource areas onshore to offshore Delaware in order to determine potential offshore sand resources for beach nourishment. Years 8 and 9 involved primarily the collection of all available data on the offshore geology. These data included all seismic lines, surface grab samples, and cores. The data were filtered for those that had reliable locations and geologic information that could be used for geologic investigations. Year 10 completed the investigations onshore by construction of a geologic cross-section from data along the coast of Delaware from Cape Henlopen to Fenwick. This cross section identified the geologic units and potential sand resource bodies as found immediately along the coast. These units and resources are currently being extended offshore and tied to known and

  12. 33 CFR 207.100 - Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... transit the waterway, and other special conditions and requirements which will govern the movement of... transit the canal. (e) Anchorage and wharfage facilities. The anchorage basin at Chesapeake City and free... breadth of this type of tow which may transit the canal are as described in rules governing...

  13. 33 CFR 207.100 - Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware...

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... vessels using the waterway. The District Engineer's representative is the Chesapeake City Resident Engineer. The Chesapeake City Resident Engineer through the dispatcher on duty will enforce these... transit the canal. (e) Anchorage and wharfage facilities. The anchorage basin at Chesapeake City and...

  14. 33 CFR 207.100 - Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware...

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... vessels using the waterway. The District Engineer's representative is the Chesapeake City Resident Engineer. The Chesapeake City Resident Engineer through the dispatcher on duty will enforce these... transit the canal. (e) Anchorage and wharfage facilities. The anchorage basin at Chesapeake City and...

  15. An updated Holocene sea-level curve for the Delaware coast

    USGS Publications Warehouse

    Nikitina, D.L.; Pizzuto, J.E.; Schwimmer, R.A.; Ramsey, K.W.

    2000-01-01

    We present an updated Holocene sea-level curve for the Delaware coast based on new calibrations of 16 previously published radiocarbon dates (Kraft, 1976; Belknap and Kraft, 1977) and 22 new radiocarbon dates of basal peat deposits. A review of published and unpublished 137Cs and 210Pb analyses, and tide gauge data provide the basis for evaluating shorter-term (102 yr) sea-level trends. Paleosea-level elevations for the new basal peat samples were determined from the present vertical zonation of marsh plants relative to mean high water along the Delaware coast and the composition of plant fossils and foraminifera. Current trends in tidal range along the Delaware coast were used to reduce elevations from different locations to a common vertical datum of mean high water at Breakwater Harbor, Delaware. The updated curve is similar to Belknap and Kraft's [J. Sediment. Petrol., 47 (1977) 610-629] original sea-level curve from 12,000 to about 2000 yr BP. The updated curve documents a rate of sea-level rise of 0.9 mm/yr from 1250 yr BP to present (based on 11 dates), in good agreement with other recent sea-level curves from the northern and central U.S. Atlantic coast, while the previous curve documents rates of about 1.3 mm/yr (based on 4 dates). The precision of both estimates, however, is very low, so the significance of these differences is uncertain. A review of 210Pb and 137Cs analyses from salt marshes of Delaware indicates average marsh accretion rates of 3 mm/yr for the last 100 yr, in good agreement with shorter-term estimates of sea-level rise from tide gauge records. ?? 2000 Elsevier Science B.V.

  16. Diversity and abundance of uncultured cytophaga-like bacteria in the Delaware estuary.

    PubMed

    Kirchman, David L; Yu, Liying; Cottrell, Matthew T

    2003-11-01

    The Cytophaga-Flavobacterium group is known to be abundant in aquatic ecosystems and to have a potentially unique role in the utilization of organic material. However, relatively little is known about the diversity and abundance of uncultured members of this bacterial group, in part because they are underrepresented in clone libraries of 16S rRNA genes. To circumvent a suspected bias in PCR, a primer set was designed to amplify 16S rRNA genes from the Cytophaga-Flavobacterium group and was used to construct a library of these genes from the Delaware Estuary. This library had several novel Cytophaga-like 16S rRNA genes, of which about 40% could be grouped together into two clusters (DE clusters 1 and 2) defined by sequences initially observed only in the Delaware library; the other 16S rRNA genes were classified into an additional four clades containing sequences from other environments. An oligonucleotide probe was designed for the cluster with the most clones (DE cluster 2) and was used in fluorescence in situ hybridization assays. Bacteria in DE cluster 2 accounted for about 10% of the total prokaryotic abundance in the Delaware Estuary and in a depth profile of the Chukchi Sea (Arctic Ocean). The presence of DE cluster 2 in the Arctic Ocean was confirmed by results from 16S rRNA clone libraries. The contribution of this cluster to the total bacterial biomass is probably larger than is indicated by the abundance of its members, because the average cell volume of bacteria in DE cluster 2 was larger than those of other bacteria and prokaryotes in the Delaware Estuary and Chukchi Sea. DE cluster 2 may be one of the more abundant bacterial groups in the Delaware Estuary and possibly other marine environments. PMID:14602617

  17. Feasibility Study of Economics and Performance of Solar Photovoltaics at the Standard Chlorine of Delaware Superfund Site in Delaware City, Delaware. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    SciTech Connect

    Salasovich, J.; Geiger, J.; Mosey, G.; Healey, V.

    2013-06-01

    The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Standard Chlorine of Delaware site in Delaware City, Delaware, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

  18. Minority Pre-service Teachers' and Faculty Training on Climate Change Education in Delaware State University

    NASA Astrophysics Data System (ADS)

    Ozbay, G.; Fox-Lykens, R.; Veron, D. E.; Rogers, M.; Merrill, J.; Harcourt, P.; Mead, H.

    2015-12-01

    Delaware State University is working toward infusing undergraduate education with climate change science and enhancing the climate change learning content of pre-service teacher preparation programs as part of the MADE-CLEAR project (www.madeclear.org). Faculty development workshops have been conducted to prepare and educate a cadre of faculty from different disciplines in global climate science literacy. Following the workshops, the faculty participants have integrated climate literacy tenets into their existing curriculum. Follow up meetings have helped the faculty members to use specific content in their curriculum such as greenhouse gases, atmospheric CO2, sea level rise, etc. Additional training provided to the faculty participants in pedagogical methods of climate change instruction to identify common misconceptions and barriers to student understanding. Some pre-service teachers were engaged in summer internships and learned how to become messenger of climate change science by the state parks staff during the summer. Workshops were offered to other pre-service teachers to teach them specific climate change topics with enhanced hands-on laboratory activities. The participants were provided examples of lesson plans and guided to develop their own lesson plans and present them. Various pedagogical methods have been explored for teaching climate change content to the participants. The pre-service teachers found the climate content very challenging and confusing. Training activities were modified to focus on targeted topics and modeling of pedagogical techniques for the faculty and pre-service teachers. Program evaluation confirms that the workshop participant show improved understanding of the workshop materials by the participants if they were introduced few climate topics. Learning how to use hands-on learning tools and preparing lesson plans are two of the challenges successfully implemented by the pre-service teachers. Our next activity includes pre

  19. Comparative status and assessment of Limulus polyphemus with emphasis on the New England and Delaware Bay populations

    USGS Publications Warehouse

    Smith, David; Millard, Michael J.; Carmichael, Ruth H.

    2009-01-01

    Increases in harvest of the American horseshoe crab (Limulus polyphemus) during the 1990s, particularly for whelk bait, coupled with decreases in species that depend on their eggs has reduced horseshoe crab abundance, threatened their ecological relationships, and dictated precautionary management of the horseshoe crab resource. Accordingly, population assessments and monitoring programs have been developed throughout much of the horseshoe crab’s range. We review and discuss implications for several recent assessments of Delaware Bay and New England populations and a meta-analysis of region-specific trends. These assessments show that the western Atlantic distribution of the horseshoe crab is comprised of regional or estuarine-specific meta-populations, which exhibit distinct population dynamics and require management as separate units. Modeling of Delaware Bay and Cape Cod populations confirmed that overharvest caused declines, but indicated that some harvest levels are sustainable and consistent with population growth. Coast-wide harvest was reduced by 70% from 1998 to 2006, with the greatest reductions within Delaware Bay states. Harvest regulations in Delaware Bay starting in the late 1990s, such as harvest quotas, seasonal closures, male-only harvest, voluntary use of bait-saving devices, and establishment of the Carl N. Shuster Jr. Horseshoe Crab Reserve, were followed by stabilization and recent evidence of increase in abundance of horseshoe crabs in the region. However, decreased harvest of the Delaware Bay population has redirected harvest to outlying populations, particularly in New York and New England. While the recent Delaware Bay assessments indicate positive population growth, increased harvest elsewhere is believed to be unsustainable. Two important considerations for future assessments include (1) managing Delaware Bay horseshoe crab populations within a multi-species context, for example, to help support migratory shorebirds and (2

  20. Ground-water resources of southern New Castle County, Delaware

    USGS Publications Warehouse

    Rima, Donald Robert; Coskery, O.J.; Anderson, P.W.

    1964-01-01

    Southern New Castle County has a land area of 190 square miles in northcentral Delaware. It is predominantly a rural area with a population of about 9,500 people who are engaged chiefly in agriculture. By and large, the residents are dependent upon ground water as a source of potable water. This investigation was made to provide knowledge of the availability and quality of .the ground-water supply to aid future development. The climate, surface features, and geology of the area are favorable for the occurrence of ground water. Temperatures are generally mild and precipitation is normally abundant and fairly evenly distributed throughout the year. The topography of the area is relatively fiat and, hence, the streams have low gradients. The surface is underlain to a considerable depth by highly permeable unconsolidated sediments that range in age from Early Cretaceous to Recent. Nearly all the subsurface stratigraphic units yield some water to wells, but only four parts or combinations of these units are sufficiently permeable, to yield large supplies. These are, from oldest to youngest, the nonmarine Cretaceous sediments and the Magothy Formation, the Monmouth Group, the Rancocas Formation, and .the surficial terrace and valley-fill deposits. In the northern part of the area the nonmarine Cretaceous sediments and the Magothy Formation can be reached economically by wells. Yields in excess of 300 gpm (gallons per minute) have been obtained from wells screened in this aquifer, but the maximum productivity of the aquifer has not been .tested. The Monmouth Group is used as a source of water in the central part of the area, where some wells yield as much as 125 gpm. The Rancocas Formation is the principal aquifer in the southern part of the area. Yields of 200-400 gpm can be expected from this aquifer, owing to its uniformly coarse texture, particularly in the upper part of the formation. The terrace deposits compose the shallow watertable aquifer throughout the area. In

  1. The University of Delaware Carlson International Polar Year Events: Collaborative and Educational Outreach

    NASA Astrophysics Data System (ADS)

    Nelson, F. E.; Bryant, T.; Wellington, P.; Dooley, J.; Bird, M.

    2008-12-01

    Delaware is a small state with, by virtue of its coastal location, a large stake in climatic change in the polar regions. The University of Delaware has maintained a strong presence in cold-regions research since the mid-1940s, when William Samuel Carlson, a highly accomplished Arctic explorer, military strategist, and earth scientist, was named 20th President (1946-50) of the University. Carlson played a leading role in two of the University of Michigan's Greenland expeditions in the late 1920s and early 1930s. As Director of the Arctic, Desert, and Tropic Branch of the US Army Air Forces Tactical Center during World War II, Colonel Carlson played a role in developing several air transportation routes through the Arctic that helped to facilitate the Allied victory in Europe. Carlson authored many scientific and popular publications concerned with the Arctic, including the books Greenland Lies North (1940) and Lifelines Through the Arctic (1962). Although the University of Delaware has maintained a vigorous and continuous program of polar research since Carlson's tenure, the faculty, staff, and students involved are diffused throughout the University's colleges and departments, without an institutional focal point. Consequently, although many of these individuals are well known in their respective fields, the institution has not until recently been perceived widely as a center of polar-oriented research. The goals of the Carlson International Polar Year Events are to: (a) develop a sense of community among UD's diffuse polar-oriented researchers and educators; (b) create a distinctive and highly visible role for UD in the milieu of IPY activities; (c) promote interest in and knowledge about the polar regions in the State of Delaware, at all educational levels; (d) forge a close relationship between UD and the American Geographical Society, a national organization involved closely with previous International Polar Years; and (e) create a new basis for development

  2. The economic impacts of climate change in water resource allocation and welfare on selected river basins in the United States

    SciTech Connect

    Callaway, J.M.; Hurd, B.

    1996-12-31

    For this study, the authors developed three river basin planning models from the ground up and modified an existing model of the Colorado River basin to forecast the effects of parametric changes in monthly average precipitation and temperature in the individual basins. The models they developed are mathematical programming models (QP). The objective function of each model is to maximize the net present value of consumer and producer surplus of water users less flooding costs, subject to a flow and storage matrix of linear constraints. This matrix characterizes, in both time and space, the inflow of surface runoff, the flow of major rivers, storage of surface water in reservoirs, and the distribution of ground and surface water to users in the basin, as well as low and maximum flow constraints required to satisfy major institutional agreements in each basin. The authors modeled the Colorado River Basin, Missouri River Basin, Delaware River Basin, and the Apalachicola-Flint-Chatahooche River Basin. Using these models, they could simulate the effects of changes in monthly average temperature and precipitation on changes in: (1) the allocation of water to different types of consumptive and non-consumptive uses at different points in the basin; (2) surface water storage in major reservoirs; (3) the value of the net benefits of water use (including flooding) in the basin.

  3. Classifying and quantifying basins of attraction

    SciTech Connect

    Sprott, J. C.; Xiong, Anda

    2015-08-15

    A scheme is proposed to classify the basins for attractors of dynamical systems in arbitrary dimensions. There are four basic classes depending on their size and extent, and each class can be further quantified to facilitate comparisons. The calculation uses a Monte Carlo method and is applied to numerous common dissipative chaotic maps and flows in various dimensions.

  4. Parana basin

    SciTech Connect

    Zalan, P.V.; Wolff, S.; Conceicao, J.C.J.; Vieira, I.S.; Astolfi, M.A.; Appi, V.T.; Zanotto, O.; Neto, E.V.S.; Cerqueira, J.R.

    1987-05-01

    The Parana basin is a large intracratonic basin in South America, developed entirely on continental crust and filled with sedimentary and volcanic rocks ranging in age from Silurian to Cretaceous. It occupies the southern portion of Brazil (1,100,000 km/sup 2/ or 425,000 mi/sup 2/) and the eastern half of Paraguay (100,000 km/sup 2/ or 39,000 mi/sup 2/); its extension into Argentina and Uruguay is known as the Chaco-Parana basin. Five major depositional sequences (Silurian, Devonian, Permo-Carboniferous, Triassic, Juro-Cretaceous) constitute the stratigraphic framework of the basin. The first four are predominantly siliciclastic in nature, and the fifth contains the most voluminous basaltic lava flows of the planet. Maximum thicknesses are in the order of 6000 m (19,646 ft). The sequences are separated by basin wide unconformities related in the Paleozoic to Andean orogenic events and in the Mesozoic to the continental breakup and sea floor spreading between South America and Africa. The structural framework of the Parana basin consists of a remarkable pattern of criss-crossing linear features (faults, fault zones, arches) clustered into three major groups (N45/sup 0/-65/sup 0/W, N50/sup 0/-70/sup 0/E, E-W). The northwest- and northeast-trending faults are long-lived tectonic elements inherited from the Precambrian basement whose recurrent activity throughout the Phanerozoic strongly influenced sedimentation, facies distribution, and development of structures in the basin. Thermomechanical analyses indicate three main phases of subsidence (Silurian-Devonian, late Carboniferous-Permian, Late Jurassic-Early Cretaceous) and low geothermal gradients until the beginning of the Late Jurassic Permian oil-prone source rocks attained maturation due to extra heat originated from Juro-Cretaceous igneous intrusions. The third phase of subsidence also coincided with strong tectonic reactivation and creation of a third structural trend (east-west).

  5. Characteristics of acute care utilization of a Delaware adult sickle cell disease patient population.

    PubMed

    Anderson, Nina; Bellot, Jennifer; Senu-Oke, Oluseyi; Ballas, Samir K

    2014-02-01

    Sickle cell disease (SCD) is an inherited blood disorder that is chronic in nature and manifests itself through many facets of the patient's life. Comprehensive specialty centers have the potential to reduce health care costs and improve the quality of care for patients who have chronic medical conditions such as heart failure and SCD. The purpose of this practice inquiry was to analyze de-identified data for acute care episodes involving SCD in order to create a detailed picture of acute care utilization for adult patients in Delaware with SCD from 2007 to 2009. Gaining a better understanding of acute care utilization for adults with SCD may provide evidence to improve access to high-quality health care services for this vulnerable patient population in the state of Delaware. PMID:23965046

  6. Application of LANDSAT-2 to the management of Delaware's marine and wetland resources

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Bartlett, D.; Philpot, W.; Davis, G.

    1976-01-01

    The author has identified the following significant results. The spectral signature of the acid waste disposal plume investigated 38 miles off the Delaware coast, is caused primarily by scattering from particles in the form of suspended ferric iron floc. In comparison, the absorption caused by the dissolved fraction of iron and other substances has a negligible effect on the spectral signature. Ocean waste disposal plumes were observed by LANDSAT-1 and -2 during dump up to 54 hours afer dump during fourteen different passes over the Delaware test site. The spatial resolution, radiometric sensitivity, and spectral band location of the LANDSAT multispectral scanner are sufficient to identify the location of ocean disposal plumes. The movement and dispersion of ocean waste disposal plumes can be estimated if the original dump location, time, and injection method are known. Operating LANDSAT in the high gain mode helps to determine plume dispersion more accurately.

  7. Metals in horseshoe crab eggs from Delaware Bay, USA: temporal patterns from 1993 to 2012.

    PubMed

    Burger, Joanna; Tsipoura, Nellie

    2014-10-01

    The health of horseshoe crab (Limulus polyphemus) eggs is important not only to maintain horseshoe crab populations, but because they are a resource for higher trophic levels, such as fish and shorebirds. We examined the concentrations of arsenic, cadmium, chromium, lead, manganese, mercury, and selenium in the eggs of horseshoe crabs from Delaware Bay (between New Jersey and Delaware, USA) in 1993, 1994, 1995, 1999, 2000, and 2012 to determine if there were significant temporal changes and if levels appear to pose a health risk to the crabs themselves, or to predators that consume them. All metal levels declined in horseshoe crab eggs between 1994 and 2012, although the declines were much less consistent for lead and chromium than that for mercury and cadmium. Levels of contaminants found in these eggs are well below those known to cause adverse effects in the crabs themselves or to organisms that consume them, such as migrating shorebirds. PMID:25015345

  8. Mapping coastal vegetation, land use and environmental impact from ERTS-1. [Delaware Bay area

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator)

    1973-01-01

    The author has identified the following significant results. Vegetation map overlays at a scale of 1:24,000 compiled by multispectral analysis from NASA aircraft imagery for all of Delaware's wetlands are being used as ground truth for ERTS-1 mapping and by state agencies for wetlands management. Six major vegetation species were discriminated and mapped, including percentages of minor species. Analogue enhancements of wetlands vegetation and dredge-fill operations have been produced using General Electric's GEMS data processing and ERTS-1 false color composites. Digital, thematic land use, and vegetation mapping of entire Delaware Bay area is in progress using Bendix Corporation's Earth Resources Data System and ERTS-1 digital tapes. Statistical evaluation of target-group selection reliability has been completed. Three papers have been published on ERTS-1 coastal vegetation and land use. Local and state officials are participating in the ERTS-1 program as co-investigators.

  9. Use of life-cycle analysis to support solid waste management planning for Delaware.

    PubMed

    Kaplan, P Ozge; Ranjithan, S Ranji; Barlaz, Morton A

    2009-03-01

    Mathematical models of integrated solid waste management (SWM) are useful planning tools given the complexity of the solid waste system and the interactions among the numerous components that constitute the system. An optimization model was used in this study to identify and evaluate alternative plans for integrated SWM for the State of Delaware in consideration of cost and environmental performance, including greenhouse gas (GHG) emissions. The three counties in Delaware were modeled individually to identify efficient SWM plans in consideration of constraints on cost, landfill diversion requirements, GHG emissions, and the availability of alternate treatment processes (e.g., recycling, composting, and combustion). The results show that implementing a landfill diversion strategy (e.g., curbside recycling) for only a portion of the population is most cost-effective for meeting a county-specific landfill diversion target Implementation of waste-to-energy offers the most cost-effective opportunity for GHG emissions reductions. PMID:19350889

  10. Low-flow routing in the Lehigh and Delaware Rivers, Pennsylvania

    USGS Publications Warehouse

    Flippo, H.N., Jr.

    1988-01-01

    Flow-routing studies were made to evaluate the response of the Lehigh and Delaware Rivers to low-flow augmentative releases from two reservoirs --Francis E. Walter Reservoir and Beltzville Lake--in the Lehigh River basin. Digital routing models that use diffusion-analogy methods to convolute flows with system-response functions were developed to simulate daily flows at selected sites. Model errors, for five sites and for periods of 1 year or more, were mostly between 3 and 12 percent in terms of absolute errors in daily flows and were mostly within 4 percent for flow volumes. The developed models were satisfactory for predicting hydrographic response at eight sites in the reach from White Haven, Pennsylvania to Trenton, New Jersey. However, abrupt changes in the flow rate of the Lehigh River at the Bethlehem and the Glendon gaging stations could not be adequately replicated with the model. The model tends to underestimate peaks by as much as 30 percent and to overestimate some low flows of short duration by as much as 20 percent. This occurs primarily because inflows from ungaged areas could not be reliably modeled throughout their ranges by use of flow records for gaged streams. The model will underestimate long-duration low flows at the Glendon site for periods when underflows at the gaging stations on Little Lehigh and Monocacy Creeks are significant. The models were used to route hypothetical releases from Francis E. Walter Reservoir during a low-flow period. The model for the Lehigh River indicated that an added release of 50 ft3/s (cubic feet per second) over a 64-day period during the severe drought in the summer of 1965 would have increased minimum flows for this period at Bethlehem and Glendon by approximately the same amount. A hypothetical release of 200 ft3/s for the period July 20-22, 1965, which is about eight times the actual release in this period, would have been attenuated by about 25 percent when it reached the Bethlehem gage. The synthesized

  11. Effects of runoff changes and sea level rise on salinity in the Delaware River estuary

    USGS Publications Warehouse

    Walters, Roy A.

    1989-01-01

    The objective of this study is to investigate changes in the spatial distribution of salt in the Delaware Estuary resulting from climate induced changes in freshwater inflows and in the position of mean sea level. The approach adopted for this study is composed of two parts: An analysis of existing physical data in order to derive a basic understanding of the salt dynamics, and numerical simulation of future conditions based upon this analysis.

  12. Application of LANDSAT-2 to the management of Delaware's marine and wetland resources

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Bartlett, D.; Philpot, W.; Davis, G.

    1977-01-01

    The author has identified the following significant results. The problem of remote sensing of suspended matter in water was analyzed in terms of the single scattering albedo, and a semiempirical relationship between satellite radiance measurements and the concentration of suspended matter in the water was developed. The relationship was tested using data from the 7 July 1973 LANDSAT overpass of Delaware Bay with good results.

  13. Residues of organochlorines and heavy metals in ruddy ducks from the Delaware River, 1973

    USGS Publications Warehouse

    White, D.H.; Kaiser, T.E.

    1976-01-01

    In December 1973, eight ruddy ducks killed in an oil spill on the Delaware River were collected to be analyzed for residues of environmental pollutants. Whole carcasses were analyzed for organochlorine pesticides and livers were examined for lead, cadmium, and mercury. Residues of polychlorinated biphenyls and DDT and/or its metabolites were present in all carcasses. Dieldrin and hexachlorobenzene were present in seven of the eight samples. All livers contained detectable levels of lead, cadmium, and mercury.

  14. Leucine incorporation by aerobic anoxygenic phototrophic bacteria in the Delaware estuary

    PubMed Central

    Stegman, Monica R; Cottrell, Matthew T; Kirchman, David L

    2014-01-01

    Aerobic anoxygenic phototrophic (AAP) bacteria are well known to be abundant in estuaries, coastal regions and in the open ocean, but little is known about their activity in any aquatic ecosystem. To explore the activity of AAP bacteria in the Delaware estuary and coastal waters, single-cell 3H-leucine incorporation by these bacteria was examined with a new approach that combines infrared epifluorescence microscopy and microautoradiography. The approach was used on samples from the Delaware coast from August through December and on transects through the Delaware estuary in August and November 2011. The percent of active AAP bacteria was up to twofold higher than the percentage of active cells in the rest of the bacterial community in the estuary. Likewise, the silver grain area around active AAP bacteria in microautoradiography preparations was larger than the area around cells in the rest of the bacterial community, indicating higher rates of leucine consumption by AAP bacteria. The cell size of AAP bacteria was 50% bigger than the size of other bacteria, about the same difference on average as measured for activity. The abundance of AAP bacteria was negatively correlated and their activity positively correlated with light availability in the water column, although light did not affect 3H-leucine incorporation in light–dark experiments. Our results suggest that AAP bacteria are bigger and more active than other bacteria, and likely contribute more to organic carbon fluxes than indicated by their abundance. PMID:24824666

  15. Multispecies modeling for adaptive management of horseshoe crabs and red knots in the delaware bay

    USGS Publications Warehouse

    McGowan, C.P.; Smith, D.R.; Sweka, J.A.; Martin, J.; Nichols, J.D.; Wong, R.; Lyons, J.E.; Niles, L.J.; Kalasz, K.; Brust, J.; Klopfer, M.; Spear, B.

    2011-01-01

    Adaptive management requires that predictive models be explicit and transparent to improve decisions by comparing management actions, directing further research and monitoring, and facilitating learning. The rufa subspecies of red knots (Calidris canutus rufa), which has recently exhibited steep population declines, relies on horseshoe crab (Limulus polyphemus) eggs as their primary food source during stopover in Delaware Bay during spring migration. We present a model with two different parameterizations for use in the adaptive management of horseshoe crab harvests in the Delaware Bay that links red knot mass gain, annual survival, and fecundity to horseshoe crab dynamics. The models reflect prevailing hypotheses regarding ecological links between these two species. When reported crab harvest from 1998 to 2008 was applied, projections corresponded to the observed red knot population abundances depending on strengths of the demographic relationship between these species. We compared different simulated horseshoe crab harvest strategies to evaluate whether, given this model, horseshoe crab harvest management can affect red knot conservation and found that restricting harvest can benefit red knot populations. Our model is the first to explicitly and quantitatively link these two species and will be used within an adaptive management framework to manage the Delaware Bay system and learn more about the specific nature of the linkage between the two species. ?? 2011 Wiley Periodicals, Inc.

  16. Legal obstacles and incentives to the development of small scale hydroelectric power in Delaware

    SciTech Connect

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are discussed. The Federal government also exercises extensive regulatory authority in the area, and the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and an inquiry into the practical use of the doctrine by the FERC is examined. In Delaware, a watercourse is not to be confused with surface water. Each gives rise to certain riparian rights, but the law makes certain distinctions between the two. The presence of both surface waters and watercourses give rise to private and public rights related to the presence of the water. Some of these rights are vested in riparian owners. Recent Delaware case law has described the riparian owner as one who owns land on the bank of a river, or who is owner of land along, bordering upon, bounded by, fronting upon, abutting, or adjacent and contiguous to and in contact with a river. But, ownership of the bank does not give the riparian ownership of the water. Some law cases are cited to discuss the laws in Delaware.

  17. Multispecies modeling for adaptive management of horseshoe crabs and red knots in the Delaware Bay

    USGS Publications Warehouse

    McGowan, Conor P.; Smith, David; Sweka, John A.; Martin, Julien; Nichols, James D.; Wong, Richard; Lyons, J.E.; Niles, Lawrence J.; Kalasz, Kevin S.; Brust, Jeffrey; Klopfer, Michelle; Spear, Braddock

    2011-01-01

    Adaptive management requires that predictive models be explicit and transparent to improve decisions by comparing management actions, directing further research and monitoring, and facilitating learning. The rufa subspecies of red knots (Calidris canutus rufa), which has recently exhibited steep population declines, relies on horseshoe crab (Limulus polyphemus) eggs as their primary food source during stopover in Delaware Bay during spring migration. We present a model with two different parameterizations for use in the adaptive management of horseshoe crab harvests in the Delaware Bay that links red knot mass gain, annual survival, and fecundity to horseshoe crab dynamics. The models reflect prevailing hypotheses regarding ecological links between these two species. When reported crab harvest from 1998 to 2008 was applied, projections corresponded to the observed red knot population abundances depending on strengths of the demographic relationship between these species. We compared different simulated horseshoe crab harvest strategies to evaluate whether, given this model, horseshoe crab harvest management can affect red knot conservation and found that restricting harvest can benefit red knot populations. Our model is the first to explicitly and quantitatively link these two species and will be used within an adaptive management framework to manage the Delaware Bay system and learn more about the specific nature of the linkage between the two species.

  18. Changes in Fetch Limited Barrier Islands along the Delaware Bay coast of New Jersey

    NASA Astrophysics Data System (ADS)

    Jaworski, A. S.; Lacovara, K. J.

    2015-12-01

    Fetch limited barrier islands protect vast swaths of sensitive intertidal biomes in the Delaware Bay, but little is known about their specific response to sea level change. The continued viability of barrier islands is threatened in the face of rising seas and coastal erosion. To assess the response of barrier islands in Delaware Bay to sea level rise, we quantified shoreline migration and changes in their size using historic maps and aerial imagery. We establish a historical record of changes of barrier island area and rates of shoreline migration, we built a time-series analysis using aerial images and historic maps of Delaware Bay along the coast of New Jersey, dating back to 1970. Since 1970 the barrier islands have decreased in size, and the region experienced an average shoreline transgression rate of 3 m/yr. However, some areas are experiencing substantiality higher rates of shoreline migration, while other areas remain relatively stable. We interpret this as resulting from varying wind energy and currents in the bay. Using our measured rates of shoreline migration and NOAA wind data for the region, we developed a GIS model examining how wind and current energy may contribute to variation in rates of shoreline change in the region. This information allows us to better anticipate the effects of sea level rise on the fragile estuarine system.

  19. Effects of horseshoe crab harvest in delaware bay on red knots: Are harvest restrictions working?

    USGS Publications Warehouse

    Niles, L.J.; Bart, J.; Sitters, H.P.; Dey, A.D.; Clark, K.E.; Atkinson, P.W.; Baker, A.J.; Bennett, K.A.; Kalasz, K.S.; Clark, N.A.; Clark, J.; Gillings, S.; Gates, A.S.; Gonzalez, P.M.; Hernandez, D.E.; Minton, C.D.T.; Morrison, R.I.G.; Porter, R.R.; Ross, R.K.; Veitch, C.R.

    2009-01-01

    Each May, red knots (Calidris canutus rufa) congregate in Delaware Bay during their northward migration to feed on horseshoe crab eggs (Limulus polyphemus) and refuel for breeding in the Arctic. During the 1990s, the Delaware Bay harvest of horseshoe crabs for bait increased 10-fold, leading to a more than 90% decline in the availability of their eggs for knots. The proportion of knots achieving weights of more than 180 grams by 26-28 May, their main departure period, dropped from 0.6-0.8 to 0.14-0.4 over 1997-2007. During the same period, the red knot population stopping in Delaware Bay declined by more than 75%, in part because the annual survival rate of adult knots wintering in Tierra del Fuego declined. Despite restrictions, the 2007 horseshoe crab harvest was still greater than the 1990 harvest, and no recovery of knots was detectable. We propose an adaptive management strategy with recovery goals and annual monitoring that, if adopted, will both allow red knot and horseshoe crab populations to recover and permit a sustainable harvest of horseshoe crabs.

  20. Effects of contaminant exposure on reproductive success of ospreys (Pandion haliaetus) nesting in Delaware River and Bay, USA.

    PubMed

    Toschik, Pamela C; Rattner, Barnett A; McGowan, Peter C; Christman, Mary C; Carter, David B; Hale, Robert C; Matson, Cole W; Ottinger, Mary Ann

    2005-03-01

    Despite serious water-quality problems and pollutant loading and retention, Delaware River and Bay (USA) provide important wildlife habitat. In 2002, we conducted a comprehensive evaluation of contaminant exposure and reproduction of ospreys (Pandion haliaetus) breeding in Delaware River and Bay. Sample eggs were collected from 39 nests and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury; a subset of 15 eggs was analyzed for perfluorinated compounds and polybrominated diphenyl ethers (PBDEs). The fate of each nest was monitored weekly. Concentrations of 10 organochlorine pesticides or metabolites, total PCBs, and several toxic PCB congeners were greater (p < 0.05) in eggs collected between the Chesapeake and Delaware Canal (C and D Canal) and Trenton (Delaware River and northern Bay) compared to other sites. Concentrations of p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE; 0.785-3.84 microg/g wet wt) and total PCBs (5.50-14.5 microg/g wet wt) in eggs collected between the C and D Canal and Trenton were similar to levels recently found in the Chesapeake Bay. In all study segments, at least one young fledged from 66 to 75% of nests. Productivity for Delaware Inland Bays (reference area) and southern Delaware Bay was 1.17 and 1.42 fledglings/active nest, respectively; north of the C and D Canal, productivity was 1.00 fledgling/active nest, which is marginally adequate to maintain the population. Using these data, a logistic regression model found that contaminant concentrations (p,p'-DDE, heptachlor epoxide, chlordane and metabolites, and total PCBs) were predictive of hatching success. Several perfluorinated compounds and PBDEs were detected in eggs at concentrations approaching 1 microg/g wet weight. These findings provide evidence that contaminants continue to be a significant stressor on osprey productivity in the northern Delaware River and Bay. PMID:15779762

  1. Effects of contaminant exposure on reproductive success of ospreys (Pandion haliaetus) nesting in Delaware River and Bay, USA

    USGS Publications Warehouse

    Toschik, P.C.; Rattner, B.A.; McGowan, P.C.; Christman, M.C.; Carter, Daniel B.; Hale, R.C.; Matson, C.W.; Ottinger, M.A.

    2005-01-01

    Despite serious water-quality problems and pollutant loading and retention, Delaware River and Bay (USA) provide important wildlife habitat. In 2002, we conducted a comprehensive evaluation of contaminant exposure and reproduction of ospreys (Pandion haliaetus) breeding in Delaware River and Bay. Sample eggs were collected from 39 nests and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury; a subset of 15 eggs was analyzed for perfluorinated compounds and polybrominated diphenyl ethers (PBDEs). The fate of each nest was monitored weekly. Concentrations of 10 organochlorine pesticides or metabolites, total PCBs, and several toxic PCB congeners were greater (p < 0.05) in eggs collected between the Chesapeake and Delaware Canal (C and D Canal) and Trenton (Delaware River and northern Bay) compared to other sites. Concentrations of p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE; 0.785-3.84 mug/g wet wt) and total PCBs (5.50-14.5 mug/g wet wt) in eggs collected between the C and D Canal and Trenton were similar to levels recently found in the Chesapeake Bay. In all study segments, at least one young fledged from 66 to 75% of nests. Productivity for Delaware Inland Bays (reference area) and southern Delaware Bay was 1.17 and 1.42 fledglings/active nest, respectively; north of the C and D Canal, productivity was 1.00 fledgling/active nest, which is marginally adequate to maintain the population. Using these data, a logistic regression model found that contaminant concentrations (p,p'-DDE, heptachlor epoxide, chlordane and metabolites, and total PCBs) were predictive of hatching success. Several perfluorinated compounds and PBDEs were detected in eggs at concentrations approaching 1 mug/g wet weight. These findings provide evidence that contaminants continue to be a significant stressor on osprey productivity in the northern Delaware River and Bay.

  2. Feasibility study of heavy oil recovery in the Permian Basin (Texas and New Mexico)

    SciTech Connect

    Olsen, D.K.; Johnson, W.I.

    1993-05-01

    This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Permian Basin of West Texas and Southeastern New Mexico is made up of the Midland, Delaware, Val Verde, and Kerr Basins; the Northwestern, Eastern, and Southern shelves; the Central Basin Platform, and the Sheffield Channel. The present day Permian Basin was one sedimentary basin until uplift and subsidence occurred during Pennsylvanian and early Permian Age to create the configuration of the basins, shelves, and platform of today. The basin has been a major light oil producing area served by an extensive pipeline network connected to refineries designed to process light sweet and limited sour crude oil. Limited resources of heavy oil (10`` to 20`` API gravity) occurs in both carbonate and sandstone reservoirs of Permian and Cretaceous Age. The largest cumulative heavy oil production comes from fluvial sandstones of the Cretaceous Trinity Group. Permian heavy oil is principally paraffinic and thus commands a higher price than asphaltic California heavy oil. Heavy oil in deeper reservoirs has solution gas and low viscosity and thus can be produced by primary and by waterflooding. Because of the nature of the resource, the Permian Basin should not be considered a major heavy oil producing area.

  3. Feasibility study of heavy oil recovery in the Permian Basin (Texas and New Mexico)

    SciTech Connect

    Olsen, D.K.; Johnson, W.I.

    1993-05-01

    This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production. Each report covers select areas of the United States. The Permian Basin of West Texas and Southeastern New Mexico is made up of the Midland, Delaware, Val Verde, and Kerr Basins; the Northwestern, Eastern, and Southern shelves; the Central Basin Platform, and the Sheffield Channel. The present day Permian Basin was one sedimentary basin until uplift and subsidence occurred during Pennsylvanian and early Permian Age to create the configuration of the basins, shelves, and platform of today. The basin has been a major light oil producing area served by an extensive pipeline network connected to refineries designed to process light sweet and limited sour crude oil. Limited resources of heavy oil (10'' to 20'' API gravity) occurs in both carbonate and sandstone reservoirs of Permian and Cretaceous Age. The largest cumulative heavy oil production comes from fluvial sandstones of the Cretaceous Trinity Group. Permian heavy oil is principally paraffinic and thus commands a higher price than asphaltic California heavy oil. Heavy oil in deeper reservoirs has solution gas and low viscosity and thus can be produced by primary and by waterflooding. Because of the nature of the resource, the Permian Basin should not be considered a major heavy oil producing area.

  4. Preliminary Investigation of Paleochannels and Groundwater Specific Conductance using Direct-Current Resistivity and Surface-Wave Seismic Geophysical Surveys at the Standard Chlorine of Delaware, Inc., Superfund Site, Delaware City, Delaware, 2008

    USGS Publications Warehouse

    Degnan, James R.; Brayton, Michael J.

    2010-01-01

    The U.S. Geological Survey (USGS), in cooperation with Region III of the U.S. Environmental Protection Agency (USEPA) and the State of Delaware, is conducting an ongoing study of the water-quality and hydrogeologic properties of the Columbia and Potomac aquifers and the extent of cross-aquifer contamination with benzene; chlorobenzene; 1,2-dichlorobenzene; 1,4-dichlorobenzene; and hydrogen chloride (hydrochloric acid when dissolved in water) in the vicinity of the Standard Chlorine of Delaware, Inc. (SCD), Superfund Site, Delaware City, Delaware. Surface geophysical surveys and well data were used to identify and correlate low-permeability units (clays) across the site and to search for sand and gravel filled paleochannels that are potential conduits and receptors of contaminated groundwater and (or) Dense Non-Aqueous Phase Liquid (DNAPL) contaminants. The combined surveys and well data were also used to characterize areas of the site that have groundwater with elevated (greater than 1,000 microsiemens per centimeter) specific conductance (SC) as a result of contamination. The most electrically conductive features measured with direct-current (DC) resistivity at the SCD site are relatively impermeable clays and permeable sediment that are associated with elevated SC in groundwater. Many of the resistive features include paleochannel deposits consisting of coarse-grained sediments that are unsaturated, have low (less than 200 microsiemens per centimeter) SC pore water, or are cemented. Groundwater in uncontaminated parts of the Columbia aquifer and of the Potomac aquifer has a low SC. Specific-conductance data from monitoring wells at the site were used to corroborate the DC-resistivity survey results. For comparison with DC-resistivity surveys, multi-channel analysis of surface wave (MASW) surveys were used and were able to penetrate deep enough to measure the Columbia aquifer, which is known to have elevated SC in some places. MASW survey results respond to solid

  5. Community-Level and Species-Specific Associations between Phytoplankton and Particle-Associated Vibrio Species in Delaware's Inland Bays.

    PubMed

    Main, Christopher R; Salvitti, Lauren R; Whereat, Edward B; Coyne, Kathryn J

    2015-09-01

    Vibrio species are an abundant and diverse group of bacteria that form associations with phytoplankton. Correlations between Vibrio and phytoplankton abundance have been noted, suggesting that growth is enhanced during algal blooms or that association with phytoplankton provides a refuge from predation. Here, we investigated relationships between particle-associated Vibrio spp. and phytoplankton in Delaware's inland bays (DIB). The relative abundances of particle-associated Vibrio spp. and algal classes that form blooms in DIB (dinoflagellates, diatoms, and raphidophytes) were determined using quantitative PCR. The results demonstrated a significant correlation between particle-associated Vibrio abundance and phytoplankton, with higher correlations to diatoms and raphidophytes than to dinoflagellates. Species-specific associations were examined during a mixed bloom of Heterosigma akashiwo and Fibrocapsa japonica (Raphidophyceae) and indicated a significant positive correlation for particle-associated Vibrio abundance with H. akashiwo but a negative correlation with F. japonica. Changes in Vibrio assemblages during the bloom were evaluated using automated ribosomal intergenic spacer analysis (ARISA), which revealed significant differences between each size fraction but no significant change in Vibrio assemblages over the course of the bloom. Microzooplankton grazing experiments showed that losses of particle-associated Vibrio spp. may be offset by increased growth in the Vibrio population. Moreover, analysis of Vibrio assemblages by ARISA also indicated an increase in the relative abundance for specific members of the Vibrio community despite higher grazing pressure on the particle-associated population as a whole. The results of this investigation demonstrate links between phytoplankton and Vibrio that may lead to predictions of potential health risks and inform future management practices in this region. PMID:26070682

  6. Community-Level and Species-Specific Associations between Phytoplankton and Particle-Associated Vibrio Species in Delaware's Inland Bays

    PubMed Central

    Main, Christopher R.; Salvitti, Lauren R.; Whereat, Edward B.

    2015-01-01

    Vibrio species are an abundant and diverse group of bacteria that form associations with phytoplankton. Correlations between Vibrio and phytoplankton abundance have been noted, suggesting that growth is enhanced during algal blooms or that association with phytoplankton provides a refuge from predation. Here, we investigated relationships between particle-associated Vibrio spp. and phytoplankton in Delaware's inland bays (DIB). The relative abundances of particle-associated Vibrio spp. and algal classes that form blooms in DIB (dinoflagellates, diatoms, and raphidophytes) were determined using quantitative PCR. The results demonstrated a significant correlation between particle-associated Vibrio abundance and phytoplankton, with higher correlations to diatoms and raphidophytes than to dinoflagellates. Species-specific associations were examined during a mixed bloom of Heterosigma akashiwo and Fibrocapsa japonica (Raphidophyceae) and indicated a significant positive correlation for particle-associated Vibrio abundance with H. akashiwo but a negative correlation with F. japonica. Changes in Vibrio assemblages during the bloom were evaluated using automated ribosomal intergenic spacer analysis (ARISA), which revealed significant differences between each size fraction but no significant change in Vibrio assemblages over the course of the bloom. Microzooplankton grazing experiments showed that losses of particle-associated Vibrio spp. may be offset by increased growth in the Vibrio population. Moreover, analysis of Vibrio assemblages by ARISA also indicated an increase in the relative abundance for specific members of the Vibrio community despite higher grazing pressure on the particle-associated population as a whole. The results of this investigation demonstrate links between phytoplankton and Vibrio that may lead to predictions of potential health risks and inform future management practices in this region. PMID:26070682

  7. Hydrogeology, degradation of ground-water quality, and simulation of infiltration from the Delaware River into the Potomac aquifers, northern Delaware

    USGS Publications Warehouse

    Phillips, S.W.

    1987-01-01

    Brackish water is infiltrating from the Delaware River into the underlying Potomac aquifers in the Cretaceous Potomac Formation in northern Delaware. Evidence that infiltration at the river is actually occurring includes chloride concentrations in the aquifers that are above ambient levels and chemical characteristics of groundwater and river water that are similar. Water quality within the Potomac aquifers has been degraded by the infiltration of river water and by leachate from waste disposal sites. The ambient groundwater has chloride concentrations from 10 to 21 mg/L. Chemical analyses indicate that the ambient groundwater is a sodium magnesium calcium-chloride sulfate bicarbonate type. Areas of the Potomac aquifers that have been degraded have chloride concentrations from 40 to 8,600 m/L, with specific conductances of 200 to 27 ,200 microsiemens/cm at 25 C. Chemical analyses indicate the groundwater in these areas is a sodium-chlorate type. Two wells in the lower Potomac aquifer near the Wilmington Marine Terminal also have been affected by the infiltration of river water. Leachate from waste disposal sites has caused localized groundwater degradation in all three Potomac aquifers, especially north of the Delaware Memorial Bridge and at sites near Army Creek and Red Lion Creek. Chloride concentrations up to 8,600 mg/L have resulted from waste disposal leachate. Simulated infiltration of river water into the Potomac aquifers accounts for approximately 6 to 12% of the total aquifer recharge in the area of influence of the pumping. There is a direct correlation between the rate of infiltration of river water and the total well-field pumpage. The rate of infiltration of river water for the pumping scenarios ranged from 0.31 to 0.62 million gal/day. Simulations of freshwater injection demonstrated that 12 barriers wells, each injecting 300 gal/min, would be needed to create a barrier against the infiltration of river water in the upper Potomac aquifer, whereas the

  8. Project CLASS.

    ERIC Educational Resources Information Center

    McBain, Susan L.; And Others

    Project CLASS (Competency-Based Live-Ability Skills) uses a series of 60 modules to teach life survival skills to adults with low-level reading ability--especially Adult Basic Education/English as a Second Language students. Two versions of the modules have been developed: one for use with teacher-directed instruction and another for independent…

  9. Class Trash.

    ERIC Educational Resources Information Center

    Chemecology, 1992

    1992-01-01

    Presents a classroom activity in which students calculate the amount and types of trash thrown out by their class at school to investigate how much trash is generated, where it goes, and speculate about alternatives. Students need to be familiar with the concepts of weight, volume, and numbers. (MCO)

  10. Estimating the Influence of a Tributary on Primary Productivity in Delaware Bay from Continuous Data: Biogeochemical and Ecological Responses to Inputs from the Murderkill

    NASA Astrophysics Data System (ADS)

    Voynova, Y. G.; Lebaron, K. C.; Barnes, R. T.; Ullman, W. J.

    2014-12-01

    Since April 2012, the University of Delaware has operated a real-time water quality monitoring station at Bowers, DE, to determine the effect of nutrient loads from the Murderkill Estuary to the Delaware Bay. The Land Ocean Biogeochemical Observatory (LOBO; Hach/Sea-Bird Electronics) is deployed under a public dock, with support from the Kent County Board of Public Works and Delaware's Department of Natural Resources and Environmental Control, and in collaboration with the USGS that operates a gauging station at the same site (01484085). Every hour the LOBO measures salinity, temperature, pressure, dissolved oxygen, turbidity, chlorophyll, CDOM, nitrate (NO3-) and orthophosphate (PO43-). Ebb tide measurements reflect conditions in the Estuary and flood tide measurements reflect conditions in Delaware Bay. Real-time data are available to the public at kentcounty.loboviz.com. Using hourly data from the LOBO, we are able to assess the nutrient and particle exchange between the Murderkill and the Delaware Bay, as well as biogeochemical and ecological responses to this exchange. Primary production in the turbid Estuary is low and nutrients from the Murderkill are efficiently delivered to Delaware Bay, where O2 production response to nitrate influx is almost instantaneous. In the summer, during the day, nutrients originating in the Estuary (ebb tide NO3- > 50-60 μM) stimulate phytoplankton growth in Delaware Bay, indicated by chlorophyll increases and O2 supersaturation during flood tide. This suggests that the Murderkill and other similar tributaries are important nutrient sources to the Delaware Bay. We use a phase-sensitive analysis to extract data characterizing the Delaware Bay, and then use dissolved oxygen to calculate rates of primary production and respiration. Newly produced Delaware Bay phytoplankton (often > 40 µg Chla L-1) may be an important labile carbon source supporting respiration in the Estuary and its surrounding salt marshes.

  11. Geodatabase of sites, basin boundaries, and topology rules used to store drainage basin boundaries for the U.S. Geological Survey, Colorado Water Science Center

    USGS Publications Warehouse

    Dupree, Jean A.; Crowfoot, Richard M.

    2012-01-01

    This geodatabase and its component datasets are part of U.S. Geological Survey Digital Data Series 650 and were generated to store basin boundaries for U.S. Geological Survey streamgages and other sites in Colorado. The geodatabase and its components were created by the U.S. Geological Survey, Colorado Water Science Center, and are used to derive the numeric drainage areas for Colorado that are input into the U.S. Geological Survey's National Water Information System (NWIS) database and also published in the Annual Water Data Report and on NWISWeb. The foundational dataset used to create the basin boundaries in this geodatabase was the National Watershed Boundary Dataset. This geodatabase accompanies a U.S. Geological Survey Techniques and Methods report (Book 11, Section C, Chapter 6) entitled "Digital Database Architecture and Delineation Methodology for Deriving Drainage Basins, and Comparison of Digitally and Non-Digitally Derived Numeric Drainage Areas." The Techniques and Methods report details the geodatabase architecture, describes the delineation methodology and workflows used to develop these basin boundaries, and compares digitally derived numeric drainage areas in this geodatabase to non-digitally derived areas. 1. COBasins.gdb: This geodatabase contains site locations and basin boundaries for Colorado. It includes a single feature dataset, called BasinsFD, which groups the component feature classes and topology rules. 2. BasinsFD: This feature dataset in the "COBasins.gdb" geodatabase is a digital container that holds the feature classes used to archive site locations and basin boundaries as well as the topology rules that govern spatial relations within and among component feature classes. This feature dataset includes three feature classes: the sites for which basins have been delineated (the "Sites" feature class), basin bounding lines (the "BasinLines" feature class), and polygonal basin areas (the "BasinPolys" feature class). The feature dataset

  12. Organochlorine contaminant exposure and effects in pipping black-crowned night-herons in Delaware Bay

    USGS Publications Warehouse

    Rattner, B.A.; Hoffman, D.J.; Melancon, M.J.; Olsen, G.H.; Parsons, K.C.; Schmidt, S.R.

    1998-01-01

    Pea Patch Island in Delaware Bay is the site of the largest heronry north of Florida. From 1989-93. the population of 9 species of wading birds numbered approximately 12,000 pairs. but has recently declined to 7,000 pairs. Because Delaware Bay is a major shipping channel. and receives anthropogenic releases of toxic substances from agricultural, industrial and municipal point and nonpoint sources, contaminant exposure and effects to the heronry have been an ongoing concern. In 1997, piping black-crowned night-herons (BCNHs) wee collected from separate nests at Pea Patch Island (N=l5), and from a coastal reference site, Middle Island (N=9), in Rehoboth Bay. DE. There was neither evidence of malformations nor hepatic histopathological lesions, and body and liver weights did not differ between sites. Biomarkers of petroleum hydrocarbons, polyhalogenated contaminant and metal exposure (cytochrome P450 induction and oxidative stress responses) did not differ (P>0.05) between sites, however, activities of benzyloxy- and ethoxyresorufin-O-dealkylase were greater in 3 of 15 embryos from Pea Patch Island compared to Middle Island. Concentrations of 21 organochlorine pesticides and metabolites were relatively low at both sites. with p,.p'DDE values well below the threshold associated with eggshell thinning. Although total PCB concentration was modestly elevated (P<0.05) in Pea Patch Island BCNH embryos, levels of axylhydrocarbon-receptor active PCB congeners. dioxins, dibenzofurans and Toxic Equivalents were low and did not differ between sites. Surprisingly, organochlorine contaminant exposure and effects in Delaware Bay BCNHs appear to be considerably less than that observed and recently reported (ETC 16:2315-2322,1997) for herons residing in the Chesapeake Bay.

  13. Chemical characteristics of Delaware River water, Trenton, New Jersey, to Marcus Hook, Pennsylvania

    USGS Publications Warehouse

    Durfor, Charles N.; Keighton, Walter B.

    1954-01-01

    This progress report gives the results of an investigation of the quality of water in the Delaware River from Trenton, N. J. to Marcus Hook, Pa., for the period August 1949 to December 1952. The Delaware River is the principal source of water for the many industries and municipal water supplies along this reach of the river and both industries and municipalities use it for the disposal of their wastes. Consequently, a study of the quality of the water and variations in the quality caused by changes in streamflow, tidal effects, pollution and other factors is important to the many users. In both New Jersey and Pennsylvania steps are being taken to abate pollution, thus it is of more than passing interest to measure the effects of waste treatment on the quality of the Delaware River water. At average or higher rates of streamflow the mineral content of the water increases slightly from Trenton to Marcus Hook. There is little variation in the concentration of dissolved minerals from bank to bank or from top to bottom of the river. At times of protracted low rates of flow the effect of ocean water mixing with the river water may be noted as far upstream as Philadelphia. At such times the salinity is often greater near the bottom of the river than near the top. The increase in chloride concentration upstream from Philadelphia is small compared to the rapid increase downstream from Philadelphia. Temperatures of offshore water vary with the season, but on a given day are substantially uniform throughout the reach of the river from Trenton to Marcus Hook. The water contains less dissolved oxygen as it flows downstream indicating that oxygen is being consumed by oxidizable matter. From Philadelphia downstream there are periods, especially in late summer, when the dissolved oxygen is barely sufficient to meet the oxygen demands of the pollution load.

  14. Application of ecological, geological and oceanographic ERTS-1 imagery to Delaware's coastal resources planning

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator)

    1972-01-01

    The author has identified the following significant events. Coastal vegetation species appearing in the ERTS-1 image taken of the Southern Coast of Delaware, during orbit 333 on August 16, 1972, have been correlated with ground truth vegetation maps, and imagery obtained from high altitude RB-57 and U-2 overflights. The vegetation maps of the entire Delaware Coast were prepared using data collected on foot, in small boats, and from low altitude aircraft. Multispectral analysis of high altitude RB-57 and U-2 photographs indicated that five vegetation species could be clearly discriminated from 60,000 feet altitude, including: (1) salt marsh cord grass (Spartina alterniflora); (2) salt marsh hay and spike grass (Spartina patens and Distichlis spicata); (3) reed grass (Phragmites communis); (4) high tide bush and sea myrtle (Iva species and Baccharus halimifolia); and (5) a group of fresh water species found in impounded areas built to attract water fowl. Major Spartina alterniflora and Spartina patens communities within the tidal marshes can be identified in the ERTS-1 imagery. Phragmites, and other species however, occur in smaller, more dispersed groupings and are difficult to discriminate within the resolution capability of the ERTS-1 scanner. Similarly, major impounded areas, built to attract water fowl can be detected; however, mosquito drainage ditches, covering many of Delaware's marshes, are too narrow and not long enough to be resolved by ERTS-1 sensors. High-marsh and dune communities dominated by high tide bush (Iva frutescens) and sea myrtle (Baccharus halimifolia) can be distinguished from adjacent maritime forest and beach grass communities.

  15. Delaware Energy and Cost Savings for New Single- and Multifamily Homes: 2012 IECC as Compared to the 2009 IECC

    SciTech Connect

    Lucas, Robert G.; Taylor, Zachary T.; Mendon, Vrushali V.; Goel, Supriya

    2012-04-01

    The 2012 International Energy Conservation Code (IECC) yields positive benefits for Delaware homeowners. Moving to the 2012 IECC from the 2009 IECC is cost effective over a 30-year life cycle. On average, Delaware homeowners will save $10,409 with the 2012 IECC. After accounting for upfront costs and additional costs financed in the mortgage, homeowners should see net positive cash flows (i.e., cumulative savings exceeding cumulative cash outlays) in 1 year for the 2012 IECC. Average annual energy savings are $616 for the 2012 IECC.

  16. Cost-effectiveness of the stream-gaging program in Maryland, Delaware, and the District of Columbia

    USGS Publications Warehouse

    Carpenter, David H.; James, R.W., Jr.; Gillen, D.F.

    1987-01-01

    This report documents the results of a cost-effectiveness study of the stream-gaging program in Maryland, Delaware, and the District of Columbia. Data uses and funding sources were identified for 99 continuously operated stream gages in Maryland , Delaware, and the District of Columbia. The current operation of the program requires a budget of $465,260/year. The average standard error of estimation of streamflow records is 11.8%. It is shown that this overall level of accuracy at the 99 sites could be maintained with a budget of $461,000, if resources were redistributed among the gages. (USGS)

  17. 33 CFR 334.110 - Delaware Bay off Cape Henlopen, Del.; naval restricted area.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... the south shore of Delaware Bay at longitude 75°06′12″; thence to latitude 38°47′25″, longitude 75°06′20″; thence to latitude 38°47′48″, longitude 75°06′00″; thence to latitude 38°50′43″, longitude 75°02′11″; thence to latitude 38°49′16″, longitude 74°59′35″; thence to a point on the shore at latitude...

  18. Solar energy system demonstration project at Wilmington Swim School, New Castle, Delaware

    NASA Technical Reports Server (NTRS)

    1980-01-01

    A solar energy system located at the Wilmington Swim School, New Castle, Delaware is described. The system was designed for a 40 percent heating and a 30 percent hot water solar contribution serving the heat loads in the following order: space heat - new addition, domestic water - entire facility, and pool heating - entire facility. On a cost basis for 2920 hours of operation, the heat reclaimed would cost $969.66 annually if provided by gas at 3.79 per million Btu's. At 5.5 centers per kwh, heat recovery costs of $481.80 percent a net savings of $487.86 annually.

  19. Vigilance and feeding behaviour in large feeding flocks of laughing gulls, Larus atricilla, on Delaware Bay

    NASA Astrophysics Data System (ADS)

    Burger, Joanna; Gochfeld, Michael

    1991-02-01

    Laughing gulls ( Larus atricilla) forage on horseshoe crab ( Limulus polyphemus) eggs during May in Delaware Bay each year. They feed in dense flocks, and foraging rates vary with vigilance, bird density, number of steps and location in the flock, whereas time devoted to vigilance is explained by number of steps, density, location and feeding rates. The time devoted to vigilance decreases with increasing density, increasing foraging rates and decreasing aggression. Birds foraging on the edge of flocks take fewer pecks and more steps, and devote more time to vigilance than those in the intermediate or central parts of a flock.

  20. Planthoppers of Delaware (Hemiptera, Fulgoroidea), excluding Delphacidae, with species Incidence from adjacent States

    PubMed Central

    Bartlett, Charles R.; Adams, Erin R.; Gonzon, Anthony T., Jr.

    2011-01-01

    Abstract The number of species of planthoppers (excluding Delphacidae) known from Delaware is updated from 7 (in 4 families) to 62 species (in 9 families). Specimen abundance is tallied by county and seasonally by two week intervals. The Chao1 abundance estimator suggests that the true fauna may be 74 species, although species incidence tallied from adjacent states (MD, NJ, PA and DC) suggests that a total fauna of approximately 100 species may be possible. An artificial key is presented to genus and select species with photos of most included taxa. PMID:21594086

  1. Application of LANDSAT to the management of Delaware's marine and wetland resources

    NASA Technical Reports Server (NTRS)

    Klemas, V.; Rogers, R. H.; Bartlett, D. S.; Davis, G.; Philpot, W. D.

    1977-01-01

    The author has identified the following significant results. LANDSAT data were found to be the best source of synoptic information on the distribution of horizontal water mass discontinuities (fronts) at different portions of the tidal cycle. Distributions observed were used to improve an oil slick movement prediction model for the Delaware Bay. LANDSAT data were used to monitor the movement and dispersion of industrial acid waste material dumped over the continental shelf. A technique for assessing aqueous sediment concentration with limited ground truth was proposed.

  2. Flood-inundation maps for the West Branch Delaware River, Delhi, New York, 2012

    USGS Publications Warehouse

    Coon, William F.; Breaker, Brian K.

    2012-01-01

    Digital flood-inundation maps for a 5-mile reach of the West Branch Delaware River through the Village and part of the Town of Delhi, New York, were created by the U.S. Geological Survey (USGS) in cooperation with the Village of Delhi, the Delaware County Soil and Water Conservation District, and the Delaware County Planning Department. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/flood_inundation/ and the Federal Flood Inundation Mapper Web site at http://wim.usgs.gov/FIMI/FloodInundationMapper.html, depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) referenced to the USGS streamgage at West Branch Delaware River upstream from Delhi, N.Y. (station number 01421900). In this study, flood profiles were computed for the stream reach by means of a one-dimensional step-backwater model that had been used to produce the flood insurance rate maps for the most recent flood insurance study for the Town and Village of Delhi. This hydraulic model was used to compute 10 water-surface profiles for flood stages at 1-foot (ft) intervals referenced to the streamgage datum and ranging from 7 ft or near bankfull to 16 ft, which exceeds the stages that correspond to both the estimated 0.2-percent annual-exceedance-probability flood (500-year recurrence interval flood) and the maximum recorded peak flow. The simulated water-surface profiles were then combined with a geographic information system (GIS) digital elevation model, which was derived from Light Detection and Ranging (LiDAR) data with a 1.2-ft (0.61-ft root mean squared error) vertical accuracy and 3.3-ft (1-meter) horizontal resolution, to delineate the area flooded at each water level. A map that was produced using this method to delineate the inundated area for the flood that occurred on August 28, 2011, agreed well with highwater marks that had been located in the field using a

  3. Trail inventory and assessment approaches to trail system planning at Delaware Water Gap National Recreation Area

    USGS Publications Warehouse

    Williams, P.B.; Marion, J.L.

    1993-01-01

    Trail system planning and management require accurate assessments of existing trail resources and their condition. A standardized and efficient process for surveying, inventorying, and assessing trail systems was developed and applied in the Delaware Water Gap National Recreation Area. Two approaches employed were (1) a Trail System Inventory, and (2) Prescriptive Work Logs. These complimentary approaches provide resource managers with valuable information regarding the location and length of individual trails, their current condition and needed maintenance work, and material and labor estimates necessary to conduct such work.

  4. Opioid Exposed Mothers and Infants in Delaware: Clinical and Legal Considerations.

    PubMed

    Savin, Michele K; Paul, David A

    2016-04-01

    Drug use is on the rise in Delaware, as demonstrated by the continued increase in infants born with neonatal abstinence syndrome. Thoughtful, evidence-based, and coordinated approaches are necessary to impact this problem. There is solid evidence that mothers and infants who remain together have improved outcomes. Professional medical and nursing societies are unanimous in support of non-punitive approaches to care. Medical professionals, legislators, and society in general would benefit from ongoing education on the addiction disease process in order to best care for the increasing number of mother/baby dyads with neonatal abstinence syndrome. PMID:27263243

  5. Water Accounting from Ungauged Basins

    NASA Astrophysics Data System (ADS)

    Bastiaanssen, W. G.; Savenije, H.

    2014-12-01

    Water scarcity is increasing globally. This requires a more accurate management of the water resources at river basin scale and understanding of withdrawals and return flows; both naturally and man-induced. Many basins and their tributaries are, however, ungauged or poorly gauged. This hampers sound planning and monitoring processes. While certain countries have developed clear guidelines and policies on data observatories and data sharing, other countries and their basin organization still have to start on developing data democracies. Water accounting quantifies flows, fluxes, stocks and consumptive use pertaining to every land use class in a river basin. The objective is to derive a knowledge base with certain minimum information that facilitates decision making. Water Accounting Plus (WA+) is a new method for water resources assessment reporting (www.wateraccounting.org). While the PUB framework has yielded several deterministic models for flow prediction, WA+ utilizes remote sensing data of rainfall, evaporation (including soil, water, vegetation and interception evaporation), soil moisture, water levels, land use and biomass production. Examples will be demonstrated that show how remote sensing and hydrological models can be smartly integrated for generating all the required input data into WA+. A standard water accounting system for all basins in the world - with a special emphasis on data scarce regions - is under development. First results of using remote sensing measurements and hydrological modeling as an alternative to expensive field data sets, will be presented and discussed.

  6. Class distinction

    NASA Astrophysics Data System (ADS)

    White, M. Catherine

    Typical 101 courses discourage many students from pursuing higher level science and math courses. Introductory classes in science and math serve largely as a filter, screening out all but the most promising students, and leaving the majority of college graduates—including most prospective teachers—with little understanding of how science works, according to a study conducted for the National Science Foundation. Because few teachers, particularly at the elementary level, experience any collegiate science teaching that stresses skills of inquiry and investigation, they simply never learn to use those methods in their teaching, the report states.

  7. Epidemiologic, Racial and Healthographic Mapping of Delaware Pediatric Cancer: 2004-2014.

    PubMed

    Holmes, Laurens; Vandenberg, Jonathan; McClarin, Lavisha; Dabney, Kirk

    2016-01-01

    Childhood cancer remains the leading cause of disease-related death among children 0 to 14 years and incidence varies by race, ethnicity, sex, geographic locale, and age at onset. However, data are unavailable in some regions, indicative of a need for such information for cancer awareness, education and prevention program. We utilized retrospective epidemiologic design to assess and characterize pediatric tumors in the Nemours Electronic Medical Records, between 2004 and 2014. Tumor frequency and children population size were used to determine the period prevalence as cumulative incidence (CI) proportion, as well as chi-square and Poisson Regression. The CI for overall childhood cancer in Delaware was 234 per 100,000 children, and varied by race, black (273 per 100,000), white (189 per 100,000). Similarly, sex variability was observed in CI, boys (237 per 100,000) and girls (230 per 100,000). The most commonly diagnosed malignancies were acute lymphoblastic leukemia (ALL), Central Nervous System (CNS)/brain and renal cancer. The geographic locales with relatively higher cancer CI in the state of DE were zip codes 19804 and 19960, but this does not imply cancer clustering. Differences in overall childhood cancer distribution occurred by race, sex, geography, and age. These findings are indicative of the need for cancer-specific health education, awareness and prevention programs in reducing the observed disparities in Delaware. PMID:26703649

  8. Shewanella and Photobacterium spp. in oysters and seawater from the Delaware Bay.

    PubMed

    Richards, Gary P; Watson, Michael A; Crane, Edward J; Burt, Iris G; Bushek, David

    2008-06-01

    Shewanella algae, S. putrefaciens, and Photobacterium damselae subsp. damselae are indigenous marine bacteria and human pathogens causing cellulitis, necrotizing fasciitis, abscesses, septicemia, and death. Infections are rare and are most often associated with the immunocompromised host. A study was performed on the microbiological flora of oysters and seawater from commercial oyster harvesting sites in the Delaware Bay, New Jersey. From 276 water and shellfish samples tested, 1,421 bacterial isolates were picked for biochemical identification and 170 (12.0%) of the isolates were presumptively identified as S. putrefaciens, 26 (1.8%) were presumptively identified as P. damselae subsp. damselae, and 665 (46.8%) could not be identified using the API 20E identification database. Sequencing of the 16S rRNA genes of 22 S. putrefaciens-like isolates identified them as S. abalonesis, S. algae, S. baltica, S. hafniensis, S. marisflavi, S. putrefaciens, Listonella anguillarum, and P. damselae. Beta-hemolysis was produced by some S. algae and P. damselae isolates, while isolates of S. baltica and L. anguillarum, species perceived as nonpathogenic, also exhibited beta-hemolysis and growth at 37 degrees C. To our knowledge, this is the first time these beta-hemolytic strains were reported from shellfish or seawater from the Delaware Bay. Pathogenic Shewanella and Photobacterium species could pose a health threat through the ingestion of contaminated seafood, by cuts or abrasions acquired in the marine environment, or by swimming and other recreational activities. PMID:18378645

  9. Contamination in Chesapeake Bay and Delaware Estuary: Results from the NOAA NS and T program

    SciTech Connect

    Valette-Silver, N.J.; Daskalakis, K.D.; Velinsky, D.J.

    1994-12-31

    Since 1986, the NOAA National Status and Trends Program through its Mussel Watch Project has been collecting and analyzing sediments and bivalves (oysters and mussels) at about 350 sites distributed around the United States. Since 1984, sediments where also collected and analyzed through the Benthic Surveillance Project. The data used for the sediments include most of the data previously available as well as the NOAA newly developed COSED data base. The analysis includes 17 trace metals and over 70 organic compounds. When comparing the results obtained for the bivalves collected in the Chesapeake Bay and the Delaware Estuary to those obtained in the rest of the United States, it appears that the concentrations of Cd in Chesapeake and Cd, Ni, and total DDT in Delaware Estuary, are high. In an effort to understand the reasons for these high concentrations, the authors compared bivalves and sediments data in relation to the various inputs (including river transport, point source, urban runoff and atmospheric deposition) to these estuarine systems. From this study, it appears that depending on the compound and on the location, natural and/or anthropogenic inputs are responsible for the observed concentrations. For example, in Chesapeake Bay, urban runoff and riverine transport appear to play major roles.

  10. Carbon Monoxide Photoproduction from Particles and Solutes in the Delaware Estuary under Contrasting Hydrological Conditions.

    PubMed

    Song, Guisheng; Richardson, John D; Werner, James P; Xie, Huixiang; Kieber, David J

    2015-12-15

    Full-spectrum, ultraviolet (UV), and visible broadband apparent quantum yields (AQYs) for carbon monoxide (CO) photoproduction from chromophoric dissolved organic matter (CDOM) and particulate organic matter (POM) were determined in the Delaware Estuary in two hydrologically contrasting seasons in 2012: an unusually low flow in August and a storm-driven high flow in November. Average AQYs for CDOM and POM in November were 10 and 16 times the corresponding AQYs in August. Maximum AQYs in November occurred in a midestuary particle absorption maximum zone. Although POM AQYs were generally smaller than CDOM AQYs, the ratio of the former to the latter increased substantially from the UV to the visible. In both seasons, UV solar radiation was the primary driver for CO photoproduction from CDOM whereas visible light was the principal contributor to POM-based CO photoproduction. CDOM dominated CO photoproduction in the uppermost water layer while POM prevailed at deeper depths. On a depth-integrated basis, the Delaware Estuary shifted from a CDOM-dominated system in August to a POM-dominated system in November with respect to CO photoproduction. This study reveals that flood events may enhance photochemical cycling of terrigenous organic matter and switch the primary photochemical driver from CDOM to POM. PMID:26506215

  11. Niche dynamics of shorebirds in Delaware Bay: Foraging behavior, habitat choice and migration timing

    NASA Astrophysics Data System (ADS)

    Novcic, Ivana

    2016-08-01

    Niche differentiation through resource partitioning is seen as one of the most important mechanisms of diversity maintenance contributing to stable coexistence of different species within communities. In this study, I examined whether four species of migrating shorebirds, dunlins (Calidris alpina), semipalmated sandpipers (Calidris pusilla), least sandpipers (Calidris minutilla) and short-billed dowitchers (Limnodromus griseus), segregate by time of passage, habitat use and foraging behavior at their major stopover in Delaware Bay during spring migration. I tested the prediction that most of the separation between morphologically similar species will be achieved by differential migration timing. Despite the high level of overlap along observed niche dimensions, this study demonstrates a certain level of ecological separation between migrating shorebirds. The results of analyses suggest that differential timing of spring migration might be the most important dimension along which shorebird species segregate while at stopover in Delaware Bay. Besides differences in time of passage, species exhibited differences in habitat use, particularly least sandpipers that foraged in vegetated areas of tidal marshes more frequently than other species, as well as short-billed dowitchers that foraged in deeper water more often than small sandpipers did. Partitioning along foraging techniques was less prominent than segregation along temporal or microhabitat dimensions. Such ranking of niche dimensions emphasizes significance of temporal segregation of migratory species - separation of species by time of passage may reduce the opportunity for interspecific aggressive encounters, which in turn can have positive effects on birds' time and energy budget during stopover period.

  12. A Multiple Resource Inventory of Delaware Using an Airborne Profiling Laser

    NASA Technical Reports Server (NTRS)

    Nelson, Ross; Short, Austin; Valenti, Michael A.; Keller, Cherry; Smith, David E. (Technical Monitor)

    2002-01-01

    An airborne profiling laser is used to monitor multiple resources related to landscape structure, both natural and man-made, across regions encompassing hundreds of thousands of hectares. A small, lightweight, inexpensive airborne profiling laser is used to inventory Delaware forests, to estimate impervious surface area statewide, and to locate potentially Suitable Delmarva Fox Squirrel (Scrotum niger cinereus) habitat. Merchantable volume estimates are within 14% of US Forest Service estimates at the county level and within 4% statewide. Total above-ground dry biomass estimates are within 19% of USES estimates at the county level and within 16% statewide. Mature forest stands suitable for reintroduction of the Delmarva Fox Squirrel, an endangered species historically endemic to the eastern shores of Delaware, Maryland, and Virginia, are identified and mapped along the laser transacts. Intersection lengths with various types of impervious surface (roofs, concrete/asphalt) and open water are tallied to estimate percent and areal coverage statewide, by stratum and county. Laser estimates of open water are within 7% of photointerpreted GIS estimates at the county level and within 3% of the GIS at the state level.

  13. Upper campanian (upper cretaceous) ammonites from the Marshalltown Formation-Mount laurel boundary beds in Delaware

    USGS Publications Warehouse

    Kennedy, W.J.; Cobban, W.A.

    1997-01-01

    New collections from the Marshalltown Formation and basal Mount Laurel Sand along the Chesapeake and Delaware Canal in Delaware clarify the ammonite dating of the interval. The Marshalltown Formation yields Pachydiscus (Pachydiscus) sp., Menuites portlocki (Sharpe, 1855) complexus (Hall and Meek, 1856), a subspecies restricted to the Baculites gregoryensis and Baculites scotti zones in the Western Interior of the United States, and Didymoceras binodosum (Kennedy and Cobban, 1993a) known only from the B. scotti zone of the Western Interior and correlatives in Arkansas and Texas. The basal part of the Mount Laurel Sand contains a complex assemblage preserved as phosphatic molds: Nostoceras (Nostoceras) monotuberculatum Kennedy and Cobban, 1993a, Nostoceras (N.) sp., Didymoceras platycostatum (Kennedy and Cobban, 1993b), D. stevensoni (Whitfield, 1877) (previously thought to be from the Marshalltown) and Exiteloceras jenneyi (Whitfield, 1877). The last two are index species of their eponymous zones in the Western Interior. This sequence is compatible with ammonites from the Wenonah Formation, which lies between the Marshalltown and Mount Laurel to the north and contains ammonites indicative of the Baculites scotti zone, and the fauna from higher in the Mount Laurel Sand, which includes elements of the Didymoceras cheyennense and Baculites compressus zones of the Western Interior sequence.

  14. Epidemiologic, Racial and Healthographic Mapping of Delaware Pediatric Cancer: 2004–2014

    PubMed Central

    Holmes, Laurens; Vandenberg, Jonathan; McClarin, Lavisha; Dabney, Kirk

    2015-01-01

    Childhood cancer remains the leading cause of disease-related death among children 0 to 14 years and incidence varies by race, ethnicity, sex, geographic locale, and age at onset. However, data are unavailable in some regions, indicative of a need for such information for cancer awareness, education and prevention program. We utilized retrospective epidemiologic design to assess and characterize pediatric tumors in the Nemours Electronic Medical Records, between 2004 and 2014. Tumor frequency and children population size were used to determine the period prevalence as cumulative incidence (CI) proportion, as well as chi-square and Poisson Regression. The CI for overall childhood cancer in Delaware was 234 per 100,000 children, and varied by race, black (273 per 100,000), white (189 per 100,000). Similarly, sex variability was observed in CI, boys (237 per 100,000) and girls (230 per 100,000). The most commonly diagnosed malignancies were acute lymphoblastic leukemia (ALL), Central Nervous System (CNS)/brain and renal cancer. The geographic locales with relatively higher cancer CI in the state of DE were zip codes 19804 and 19960, but this does not imply cancer clustering. Differences in overall childhood cancer distribution occurred by race, sex, geography, and age. These findings are indicative of the need for cancer-specific health education, awareness and prevention programs in reducing the observed disparities in Delaware. PMID:26703649

  15. Oyster mortality in Delaware Bay: Impacts and recovery from Hurricane Irene and Tropical Storm Lee

    NASA Astrophysics Data System (ADS)

    Munroe, D.; Tabatabai, A.; Burt, I.; Bushek, D.; Powell, E. N.; Wilkin, J.

    2013-12-01

    One predicted consequence of climate change is increasing variability of local weather extremes such as the frequency and intensity of storms. In August and September of 2011, Hurricane Irene and Tropical Storm Lee generated extreme flooding in the Delaware River watershed that produced prolonged baywide low salinity and consequent historically-high mortalities for the oyster stock in the upper reaches of Delaware Bay. The dynamics, consequences, and projections for recovery from the anomalously high oyster mortality that occurred as a consequence are reported using a combination of physical modeling, field sampling, and metapopulation dynamics modeling. Monthly mortality of 10% and 55% on the upper bay beds (Arnolds and Hope Creek respectively) exceeded the longer-term average at those locations and was associated with a continuous low salinity (<7) exposure of greater than 20 days. Population recovery projections based on metapopulation modeling suggests that recovery will take approximately 10 years for the uppermost beds. Clear understanding of the circumstances leading to this high population-level impact on oysters is important because anticipated future conditions of increased storm frequency will intensify the challenge such events pose for the management of fishery and aquaculture resources, and the siting of restoration efforts.

  16. Subsurface radar applications in the Delaware Basin. Final report, June 1, 1980-January 31, 1981. [To probe into potash bed

    SciTech Connect

    Unterberger, R.R.

    1981-10-01

    Purpose was to find a method of probing into potash to determine if dangers lie ahead. Of specific interest to Sandia, was the problem of outlining a breccia pipe which Mississippi Chemical Company (MCC) found protruded into the potash bed in Carlsbad, New Mexico, they were mining. MCC mined around it and continued their work. If, however, the discontinuity in the ore (breccia pipe) had any fractures linking with a high pressure water zone above the mining level, the act of mining into the pipe could have lost the mine to incoming water. Imperial Chemical Industries, Ltd. had this happen to them in their only salt mine in England. Chapter II discusses our attempts (unsuccessful) to probe through the potash ore and see the breccia pipe. Chapter III contains data on laboratory measurements of the complex electric permittivity (dielectric constant and loss tangent) of potash samples from MCC.

  17. LAND COVER CHANGE AND LARGE SCALE HYDROLOGIC MODELING OF THE SAN PEDRO RIVER AND CATSKILL/DELAWARE BASINS

    EPA Science Inventory

    This study is based on the assumption that land cover change and rainfall spatial variability affect the r-ainfall-runoff relationships on the watershed. Hydrologic response is an integrated indicator of watershed condition, and changes in land cover may affect the overall health...

  18. 33 CFR 165.T05-0495 - Safety Zone, Sugar House Casino Fireworks Display, Delaware River; Philadelphia, PA.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... general safety zone regulations found in 33 CFR 165.23 apply to the safety zone created by this temporary... Fireworks Display, Delaware River; Philadelphia, PA. 165.T05-0495 Section 165.T05-0495 Navigation and... Areas Fifth Coast Guard District § 165.T05-0495 Safety Zone, Sugar House Casino Fireworks...

  19. Race to the Top. Delaware Report. Year 2: School Year 2011-2012. [State-Specific Summary Report

    ERIC Educational Resources Information Center

    US Department of Education, 2013

    2013-01-01

    This State-specific summary report serves as an assessment of Delaware's Year 2 Race to the Top implementation, highlighting successes and accomplishments, identifying challenges, and providing lessons learned from implementation from approximately September 2011 through September 2012. Despite some implementation challenges and delays during the…

  20. Equinox. A Model for the Natural Science Education Curriculum for the Ninth Through Twelfth Grades in the Delaware Schools.

    ERIC Educational Resources Information Center

    Baker, Thomas M.; Reiher, John F.

    This publication represents a model for the Natural Science Education Curriculum for grades nine through twelve in Delaware's schools. This guide is meant to serve as a minimal standard for natural science education, but at the same time strives for maximum output of the natural science program. The guide is based on the processes of science…

  1. ON THE WIND-INDUCED EXCHANGE BETWEEN INDIAN RIVER BAY, DELAWARE AND THE ADJACENT CONTINENTAL SHELF. (R826945)

    EPA Science Inventory

    The structure of the wind-induced exchange between Indian River Bay, Delaware and the adjacent continental shelf is examined based on current measurements made at the Indian River Inlet which represents the only conduit of exchange between the bay and the coastal ocean. Local ...

  2. Evaluation of the National Science Foundation's Statewide Systemic Initiatives (SSI) Program. Second-Year Case Studies: Connecticut, Delaware, and Montana.

    ERIC Educational Resources Information Center

    Zucker, Andrew A.; Shields, Patrick M.

    During the first and second years of the national evaluation of the Statewide Systemic Initiatives (SSI) program, a sample of 11 case study states was drawn from the universe of awards the National Science Foundation made to 25 states and Puerto Rico. This document reports on three case studies for Connecticut, Delaware, and Montana. The cases…

  3. Integrating Vocational and Academic Studies: What Three High Schools in Delaware Are Doing. High Schools That Work.

    ERIC Educational Resources Information Center

    Scarbrough, Mary An; Sullivan, Margaret, Ed.

    The New Castle County Vocational-Technical School District in Wilmington, Delaware, has made great strides in integrating academic and vocational studies by adopting a "project" approach to integrated learning. Students at the district's high schools are involved in a variety of real-life projects aimed at advancing technical knowledge and skills.…

  4. A Voyage to Economic Literacy: A Year Long Study Done by Fifth Grade Students at Warner Elementary School, Wilmington, Delaware.

    ERIC Educational Resources Information Center

    Morris, Doris

    Combining reading, language arts, and economics, this interdisciplinary project involved fifth grade students in studying three units dealing with (1) an auto liner named the Karinita; (2) the port of Wilmington (Delaware); and (3) international trade. Specific unit lesson plans are provided in this project description. In unit 1, students learned…

  5. 76 FR 4716 - Commercial Leasing for Wind Power on the Outer Continental Shelf (OCS) Off Delaware, Notice of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-26

    ... Bureau of Ocean Energy Management, Regulation and Enforcement Commercial Leasing for Wind Power on the... FR 21653). In response to that notice, BOEMRE received two nominations of proposed lease areas: One... closed for the Delaware RFI (75 FR 21653). BOEMRE received eight responses during the public...

  6. Equinox. A Model for the Natural Science Education Curriculum for Kindergarten and First Grade in Delaware's Schools.

    ERIC Educational Resources Information Center

    Baker, Thomas M.; Reiher, John F.

    This publication represents a model for the Natural Science Education Curriculum for kindergarten and grade one in Delaware's schools. This guide is meant to serve as a minimal standard for natural science education, but at the same time strives for maximum output of the natural science program. The guide is based on the processes of science…

  7. Equinox. A Model for the Natural Science Education Curriculum for the Second, Third, and Fourth Grades in the Delaware Schools.

    ERIC Educational Resources Information Center

    Baker, Thomas M.; Reiher, John F.

    This publication represents a model for the Natural Science Education Curriculum for grades two through four in Delaware's schools. This guide is meant to serve as a minimal standard for natural science education, but at the same time strives for maximum output of the natural science program. The guide is based on the processes of science…

  8. 76 FR 31678 - Saratoga and North Creek Railway, LLC-Acquisition and Operation Exemption-Delaware and Hudson...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-01

    ... Delaware and Hudson Railway Company, Inc. d/b/a Canadian Pacific (CP) a permanent and exclusive freight... approximately 3.2 miles of operating rights for the purpose of interchange with CP between Adirondack Branch milepost 39.44 and CP's yard at Saratoga Springs located at Canadian Subdivision milepost 35.\\3\\ The...

  9. The Development of a Competency Based Food Preparations Curriculum for High School Special Needs Students in New Castle County, Delaware.

    ERIC Educational Resources Information Center

    Stewart, Richard Lee

    A competency-based culinary arts food preparation curriculum for Delaware high school students with special needs was developed during a project that included the following activities: review of the state's existing culinary arts curriculum for regular education students; incumbent worker survey administered to 24 restaurant…

  10. The Feasibility of Developing a Licensed Practical Nurse--Associate Degree Nurse Articulation Program at Delaware County Community College.

    ERIC Educational Resources Information Center

    Trani, Gilberta M.

    This paper reports the results of a study conducted to (1) assess the need for career mobility within the nursing program at Delaware County Community College (Pennsylvania); (2) demonstrate the range of complexity in nursing situations which require diversified educational programs; and (3) propose a model to assess the skills and knowledge of…

  11. Improving the Enrollment and Retention of Students in the Associate in Arts Program at the University of Delaware

    ERIC Educational Resources Information Center

    Bacon, J. Richard

    2010-01-01

    The University of Delaware established the Associate in Arts Program to ensure that students on branch campuses were prepared for the rigors of the University. However, enrollment and retention in the Program remained below expectations. High school seniors, guidance counselors, Program faculty and staff, and both enrolled students and students…

  12. Natural radionuclides (210)Po and (210)Pb in the Delaware and Chesapeake Estuaries: modeling scavenging rates and residence times.

    PubMed

    Marsan, D; Rigaud, S; Church, T

    2014-12-01

    During the spring and summer months of 2012, (210)Po and (210)Pb activity were measured in the dissolved and particulate phases from the Delaware and upper Chesapeake estuaries. The upper Delaware estuary, near the freshwater end member, was characterized by high-suspended matter concentrations that scavenged dissolved (210)Po and (210)Pb. Box models were applied using mass balance calculations to assess the nuclides residence times in each estuary. Only 60% of the dissolved (210)Po and 55% of the dissolved (210)Pb from the Delaware estuary were exported to coastal waters. A large fraction of soluble (210)Po and (210)Pb within the estuary was either reversibly adsorbed onto suspended particles, trapped in sediment accumulation zones (such as intertidal marshes), bioaccumulated into phytoplankton and discharged to the coastal ocean. The upper Chesapeake estuary was largely characterized by sub-oxic bottom waters that contained higher concentrations of dissolved (210)Po and (210)Pb, hypothesized to be subjected to redox cycling of manganese. The Delaware and Chesapeake estuary mean residence times for (210)Po differed significantly at 86 ± 7 and 126 ± 10 days respectively, while they were similar for (210)Pb (67 ± 6-55 ± 5 days). The difference in residence times corresponds to the greater extent of biogeochemical scavenging and regeneration processes within the upper Chesapeake. PMID:25239647

  13. Rift basins in western margin of India and their hydrocarbon prospects with special reference to Kutch basin

    SciTech Connect

    Biswas, S.K.

    1982-10-01

    The western continental margin of India can be classed as a divergent or passive margin. The western continental shelf is an extensive carbonate bank (Bombay offshore basin) passing into clastic sediments on the north and south. Three craton-margin embayed basins-Kutch, Cambay, and Narmada- in the northern part of the shelf, are filled predominantly with clastic sediments. These basins occupy grabens bounded by faults diverging seaward. The grabens were formed by three rift systems along major Precambrian tectonic trends. The rifting developed sequentially from north to south around the Saurashtra horst. Kutch basin was formed in the Early Jurassic, followed by Cambay basin in Early Cretaceous time, and the Narmada in the Late Cretaceous. It appears that these rifting events occurred at successive stages during the northward migration of the Indian plate after its break from Gondwanaland in Late Triassic or Early Jurassic. It is inferred that these rift basins opened up successively as a result of the counterclockwise drift of the Indian craton. Bombay offshore and Cambay are two major oil-producing basins in the western margin. These basins are characterized by high geothermal gradients attributed to the shallowness of the mantle in this region. Oil has not been found in KUtch basin, which is mainly an onshore Mesozoic basin. The basin basin depocenter shifted offshore at the northwestern part of the continental shelf where the shelf is wide.

  14. A model of late quaternary landscape development in the Delaware Valley, New Jersey and Pennsylvania

    USGS Publications Warehouse

    Ridge, J.C.; Evenson, E.B.; Sevon, W.D.

    1992-01-01

    In the Delaware Valley of New Jersey and eastern Pennsylvania the late Quaternary history of colluviation, fluvial adjustment, and soil formation is based on the ages of pre-Wisconsinan soils and glacial deposits which are indicated by feld relationships and inferred from mid-latitude climate changes indicated by marine oxygen-isotope records. The area is divided into four terranes characterized by sandstone, gneiss, slate and carbonate rocks. Since the last pre-Wisconsinan glaciation (> 130 ka, inferred to be late Illinoian), each terrane responded differently to chemical and mechanical weathering. During the Sangamon interglacial stage (??? 130-75 ka) in situ weathering is inferred to have occurred at rates greater than transportation of material which resulted in the formation of deep, highly weathered soil and saprolite, and dissolution of carbonate rocks. Cold climatic conditions during the Wisconsinan, on the other hand, induced erosion of the landscape at rates faster than soil development. Upland erosion during the Wisconsinan removed pre-Wisconsinan soil and glacial sediment and bedrock to produce muddy to blocky colluvium, gre??zes lite??es, and alluvial fans on footslopes. Fluvial gravel and overlying colluvium in the Delaware Valley, both buried by late Wisconsinan outwash, are inferred to represent episodes of early and middle Wisconsinan (??? 75-25 ka) upland erosion and river aggradiation followed by river degradation and colluvium deposition. Early-middle Wisconsinan colluvium is more voluminous than later colluvium despite colder, possibly permafrost conditions during the late Wisconsinan ??? 25-10 ka). Extensive colluviation during the early and middle Wisconsinan resulted from a longer (50 kyr), generally cold interval of erosion with a greater availability of easily eroded pre-Wisconsinan surficial materials on uplands than during the late Wisconsinan. After recession of late Wisconsinan ice from its terminal position, soil formation and

  15. Metals in tissues of migrant semipalmated sandpipers (Calidris pusilla) from Delaware Bay, New Jersey

    SciTech Connect

    Burger, Joanna; Gochfeld, Michael; Niles, Lawrence; Dey, Amanda; Jeitner, Christian; Pittfield, Taryn; Tsipoura, Nellie

    2014-08-15

    There is an abundance of field data on levels of metals for feathers in a variety of birds, but relatively few data for tissues, especially for migrant species from one location. In this paper we examine the levels of arsenic, cadmium, chromium, lead, manganese, mercury and selenium in muscle, liver, brain, fat and breast feathers from migrant semipalmated sandpipers (Calidris pusilla) collected from Delaware Bay, New Jersey. Our primary objectives were to (1) examine variation as a function of tissue, (2) determine the relationship of metal levels among tissues, and (3) determine the selenium:mercury molar ratio in different tissues since selenium is thought to protect against mercury toxicity. We were also interested in whether the large physiological changes that occur while shorebirds are on Delaware Bay (e.g. large weight gains in 2–3 weeks) affected metal levels, especially in the brain. There were significant differences among tissues for all metals. The brain had the lowest levels of arsenic and cadmium, and was tied for the lowest levels of all other metals except lead and selenium. Correlations among metals in tissues were varied, with mercury levels being positively correlated for muscle and brain, and for liver and breast feathers. Weights vary among individuals at the Delaware Bay stopover, as they arrive light, and gain weight prior to migration north. Bird weight and levels of arsenic, cadmium, and selenium in the brain were negatively correlated, while they were positively correlated for lead. There was no positive correlation for mercury in the brain as a function of body weight. The selenium:mercury molar ratio varied significantly among tissues, with brain (ratio of 141) and fat having the highest ratios, and liver and breast feathers having the lowest. In all cases, the ratio was above 21, suggesting the potential for amelioration of mercury toxicity. - Highlights: • Metal levels were examined for migrant semipalmated sandpipers. • There

  16. A Descriptive Study of the Semantic Connotations Toward the Institutional Governance System at Delaware County Community College of the Several Constituent Groups.

    ERIC Educational Resources Information Center

    Wyman, Bruce T.

    This study was conducted to determine whether the attitudes of the various constituent representatives (administration, faculty, students, and noncontract personnel) differed significantly toward the Institutional Governance system as operative at Delaware County Community College (Pennsylvania). Following Osgood's Semantic Differential technique…

  17. Seasonal cycling of sulfur and iron in porewaters of a Delaware salt marsh

    NASA Technical Reports Server (NTRS)

    Luther, George W., III; Church, Thomas M.

    1987-01-01

    An extensive pore water data set has been gathered in the Great Marsh, Delaware over various seasons, salinities, and tides. The data all point to a complimentary redox cycle for sulfur and iron which operates seasonally and tidally. Surface oxidizing conditions prevail in summer, with more reducing conditions at depth during the winter. During the spring tides which flood the marsh, pyrite oxidation occurs releasing excess dissolved iron (II) and sulfate to the porewaters, and precipitating authigenic solid iron phases. The redox conditions in the porewaters of the upper zone during the summer is poised between mildly oxidizing and mildly reducing conditions as shown by pE calculations. This redox environment and intermediate iron-sulfur redox species may be important for the stimulation of plant growth (photosynthesis) and sustenance of a viable microbial community (heterotrophy and chemoautropy).

  18. Health hazard evaluation report HETA 91-0366-2453, Delaware County Resource Recovery Facility, Chester, Pennsylvania

    SciTech Connect

    Esswein, E.J.; Tepper, A.

    1994-09-01

    In response to a confidential request, an investigation was made of possible hazardous working conditions at the Delaware County Resource Recovery Facility (SIC-4053), Chester, Pennsylvania. The facility was a waste to energy incinerator employing 91 persons. The facility incinerated municipal solid waste and refuse derived fuel to produce electrical power. The request was made in response to concern regarding exposure to lead (7439921), incinerator ash dust, and heat stress. Health concerns included ear, nose and throat problems, eye irritation, and skin rash. The authors conclude that a possible occupational health hazard existed due to heat exposure in some areas of the facility. The presence of metal in dust on workers' hands and surfaces presented a risk of ingestion.

  19. LANDSAT observations of ocean dump plume movement and dispersion. [Cape Henlopen, Delaware

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Davis, G. R.; Henry, R.

    1976-01-01

    The author has identified the following significant results. Eighteen LANDSAT images were analyzed to study the dispersion and movement of ocean dump plumes thirty-eight miles southeast of Cape Henlopen, Delaware, at the disposal site for waste discharged from a plant producing titanium dioxide. Long visual persistence was explained by the formation of a suspended ferric floc. Spectrometric measurements indicate that upon combining with sea water the acid waste develops a strong reflectance peak in the band 0.55 to 0.60 micron region, resulting in a stronger contrast in the MSS band 4 than the other bands. Predominant direction of movement of the waste plumes was to the southeast. Average drift velocity for surface drogues and the waste plumes was about 0.5 knots. The water at the test site was highly stratified and stable in the summer and nearly homogenous in the winter.

  20. Health assessment for Halby Chemical, Wilmington, Delaware, Region 3. CERCLIS No. DED980830954. Preliminary report

    SciTech Connect

    Not Available

    1989-01-04

    The Halby Chemical Site is located in southeastern Wilmington (New Castle County), Delaware. Some of the drums from a storage area encompassing approximately 20,000 square feet, were found to be leaking. In addition, a lagoon exists on-site that was used for waste disposal. Preliminary on-site groundwater sampling results have identified cyanide (or thiocyanate), tetrachloroethane, iron, and manganese. In addition, arsenic, lead, cadmium, and mercury were identified in aqueous samples from the lagoon. Cyanide was also detected in soil. The site is considered to be of potential public health concern because of the risk to human health caused by the possibility of human exposure to hazardous substances. Direct contact with and possible ingestion of contaminated sediment and surface water are the human exposure pathways of concern.

  1. Skylab/EREP application to ecological, geological, and oceanographic investigations of Delaware Bay

    NASA Technical Reports Server (NTRS)

    Klemas, V.; Bartlett, D. S.; Philpot, W. D.; Rogers, R. H.; Reed, L. E.

    1978-01-01

    Skylab/EREP S190A and S190B film products were optically enhanced and visually interpreted to extract data suitable for; (1) mapping coastal land use; (2) inventorying wetlands vegetation; (3) monitoring tidal conditions; (4) observing suspended sediment patterns; (5) charting surface currents; (6) locating coastal fronts and water mass boundaries; (7) monitoring industrial and municipal waste dumps in the ocean; (8) determining the size and flow direction of river, bay and man-made discharge plumes; and (9) observing ship traffic. Film products were visually analyzed to identify and map ten land-use and vegetation categories at a scale of 1:125,000. Digital tapes from the multispectral scanner were used to prepare thematic maps of land use. Classification accuracies obtained by comparison of derived thematic maps of land-use with USGS-CARETS land-use maps in southern Delaware ranged from 44 percent to 100 percent.

  2. Prevalence and Predictors of Tobacco Use Among Asian Americans in the Delaware Valley Region

    PubMed Central

    Ma, Grace X.; Shive, Steve; Tan, Yin; Toubbeh, Jamil

    2002-01-01

    Objectives. This study examined tobacco use rates and potential predictors of use among Asian Americans residing in the Delaware Valley region. Methods. A cross-sectional survey design was used. The sample consisted of 1174 Chinese, Koreans, Vietnamese, and Cambodians. Results. Findings indicated that the mean age at initiation of tobacco use was 18.3 years. Among the respondents, 40.2% had a history of tobacco use, and 29.6% were current users. Men were more likely than women to smoke. There were significant differences between never smokers, current smokers, and ex-smokers in sex, ethnicity, educational attainment, and marital and employment status. Conclusions. The findings suggest that tobacco use is still a serious public health problem among Asian Americans, especially men. PMID:12036798

  3. Benthic macrofauna productivity enhancement by an artificial reef in Delaware Bay, USA

    SciTech Connect

    Steimle, F; Foster, Karen L.; Kropp, Roy K.; Conlin, B

    2002-10-15

    To understand the potential enhancement value of a habitat-loss mitigation reef in Delaware Bay, especially as a source of food for fishery resources, the secondary productivity of the reef epifauna and nearby sand infauna was estimated and compared. The mean production of natural sand infauna was estimated at between 215 and 249 kcal m(2) yr(-1), while that of the epifauna on the reef surfaces was between 3990 and 9555 kcal m(2) yr(-1). With the 36 m(2) footprint of a reef unit as a basis for comparison, the 407 m(2) of reef unit surface covering that footprint produced 1.62-3.89 X 10(6) kcal yr(-1) of epifauna compared with 7.74-8.96 X 10(3) kcal yr(-1) per footprint area for the adjacent sand infauna. There was, however, substantial annual variability in the productivity of the epifauna, based on the recruitment success of Mytilus edulis.

  4. Avian communities in riparian forests of different widths in Maryland and Delaware

    USGS Publications Warehouse

    Keller, C.M.E.; Robbins, C.S.; Hatfield, J.S.

    1993-01-01

    In agricultural landscapes, much of the remaining forest is in linear tracts along streams. These riparian forests provide habitat for forest birds, but their use by forest interior birds may depend on forest width. We conducted point-count surveys of birds in riparian forests on the Eastern shore of Maryland and Delaware to assess whether the presence of any species was dependent on corridor width. We surveyed 117 corridors that ranged from 25- to 800-m wide. Several area-sensitive neotropical migrants were encountered more frequently in wider riparian forests, and probabilities of occurrence increased most rapidly between 25 and 100 m. Based on these surveys, we recommend that riparian forests be at least 100-m wide to provide some nesting habitat for area-sensitive species. Wider riparian forests would be preferable and should be preserved.

  5. Spatial pattern of hormone and antibiotic concentrations in surface waters in Delaware

    NASA Astrophysics Data System (ADS)

    Vaicunas, R.; Inamdar, S. P.; Dutta, S.; Aga, D.; Zimmerman, L. R.

    2011-12-01

    Water quality surveys of the U.S. have confirmed the presence of hormones and antibiotics in some surface waters. Although the reported concentrations of these substances are extremely low, there is substantial concern about their effect on aquatic species. For example, chronic exposure to estradiol (E2β) concentrations as low as 40 ng/L have been shown to cause endocrine disruption in fish. Furthermore, there is potential for contaminants to enter our drinking supply. Significant sources of hormones and antibiotics include discharge from concentrated animal feeding operations (CAFOs) and wastewater treatment plants as well as runoff from agricultural land receiving application of animal manure. Since Sussex County, Delaware is one of the leading poultry producing counties in the nation, and many farmers in the state use poultry litter as fertilizer for their crops, it is critical to study the concentrations of contaminants in surface waters. Fifty surface water (streams, lakes, and ponds) sampling locations throughout the state of Delaware were chosen based on DNREC (Delaware Department of Natural Resources and Environmental Control) data. Locations with the highest nitrogen and phosphorus levels were assumed to be associated with agriculture and wastewater sources and therefore were likely to be contaminated with hormones and antibiotics. The first set of sampling occurred in April representing high-flow conditions, and the second set will occur in September representing low-flow conditions. Water samples will be screened through the cost-effective enzyme-linked immunosorbent assay (ELISA) method followed by more rigorous analyses of selected samples using liquid chromatography-mass spectrometry (LC/MS/MS). ELISA screening includes estradiol (E2β), sulfamethazine and triclosan, while LC/MS/MS will quantify both free and conjugated forms of estrone (E1), estradiol (E2β), estriol (E3), as well as selected sulfa and tetracycline antibiotics. Initial ELISA results

  6. Application of LANDSAT-2 to the Management of Delaware's Marine and Wetland Resources

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Bartlett, D.; Philpot, W.; Davis, G.

    1975-01-01

    The author has identified the following significant results. The duPont waste disposal plume was observed in 12 NASA/LANDSAT satellite images during dump up to 54 hours after dump. The circulation processes at the acid waste disposal site are highly event-dominated, with the majority of the water transport occurring strong northeasters. There is a mean flow to the south alongshore. During the warm months, the ocean stratifies with warm water over cold water. During stratified conditions, the near-bottom drogues showed very little movement. LANDSAT, aircraft, and boats were used successfully to study estuarine and coastal fronts or boundaries. By capturing and holding oil slicks, frontal systems significantly influence the movement and dispersion of oil slicks in Delaware Bay. Recent oil slick tracking experiments conducted to verify a predictive oil dispersion and movement model have shown that during certain parts of the tidal cycle the oil slicks tend to line up along boundaries.

  7. Solar energy system demonstration project at Wilmington Swim School, New Castle, Delaware. Final report

    SciTech Connect

    1980-07-01

    This document is the Final Report of the Solar Energy System located at the Wilmington, Swim School, New Castle, Delaware. This active solar system is composed of 2,700 square feet of Revere liquid flat plate collectors piped to a 2,800 gallon concrete storage tank located below ground near the building. A micro-computer based control system selects the optimal applications of the stored energy among space, domestic water and pool alternatives. The controlled logic is planned for serving the heat loads in the following order: space heat-new addition, domestic water-entire facility, and pool heating-entire facility. A modified trombe wall passive operation the active system will bypass the areas being served passively. The system was designed for a 40 percent heating and a 30 percent hot water solar contribution.

  8. Perkinsus chesapeaki in stout razor clams Tagelus plebeius from Delaware Bay.

    PubMed

    Bushek, David; Landau, Brenda; Scarpa, Emily

    2008-01-24

    Perkinsus chesapeaki is reported from stout razor clams Tagelus plebeius in Delaware Bay, extending the known range of P. chesapeaki north of Chesapeake Bay. P. marinus, which causes dermo disease, is prevalent in cultured and wild oysters at this site, but was not detected in T. plebeius. Evidence for the presence of disseminated neoplasia, also reported from Chesapeake Bay, was equivocal. Although P. chesapeaki infections were associated with mortality events, light infection intensities and a general lack of histopathological evidence of disease limit inferences about a causal relationship. A comparison of Ray's fluid thioglycollate medium (RFTM)-based and PCR-based detection assays highlight differences in detection capabilities related to the quantity and type of tissue processed rather than assay sensitivity per se, a point that should be considered when surveying populations for disease prevalence. Investigators are further cautioned to use care when applying and interpreting diagnostic assays when used with novel species. PMID:18380223

  9. A summary of the test procedures and operational details of a Delaware River and an ocean dumping pollution monitoring experiment conducted 28 August 1975

    NASA Technical Reports Server (NTRS)

    Hypes, W. D.; Ohlhorst, C. W.

    1977-01-01

    Two remote sensor evaluation experiments are discussed. One experiment was conducted at the DuPont acid-dump site off the Delaware coast. The second was conducted at an organic waste outfall in the Delaware River. The operational objective of obtaining simultaneous sea truth sampling with remote sensors overpasses was met. Descriptions of the test sites, sensors, sensor platforms, flight lines, sea truth data collected, and operational chronology are presented.

  10. Proximate causes of sexual size dimorphism in horseshoe crabs (Limulus Polyphemus) of the Delaware Bay

    USGS Publications Warehouse

    Smith, D.R.; Mandt, M.T.; Macdonald, P.D.M.

    2009-01-01

    The unresolved status of the proximate cause for sexual size dimorphism in horseshoe crabs has practical consequence, because harvest recommendations rely on assumptions about sex-specific growth and maturity. We propose and evaluate competing hypotheses for the proximate cause of sexual size dimorphism in horseshoe crabs (Limulus polyphemus) by comparing size and estimated age frequencies from spring-captured juveniles (n = 9,075) and adults (n = 36,274) to predictions from the competing hypotheses. We found that the number of identifiable juvenile size distributions was greater for females than males and the probability of remaining a juvenile was higher for females than males among older juveniles. These findings are consistent with males maturing earlier than females. Molt increments and mean sizes were similar for male and female juveniles, which is not consistent with differential growth. Among adults, one size distribution accounted for ???90% of females regardless of carapace wear. Also, size ratio of adult females to males was 1.26, and size ratio of the largest adult to largest juvenile female was 1.28. These observations are not consistent with females continuing to molt as adults. Differential-maturity is the most parsimonious explanation for sexual size dimorphism in Delaware Bay horseshoe crabs. In addition, because of a low frequency of juvenile females >195 mm relative to adult females and male-biased sex ratios starting at 105 mm, we hypothesize that females, more than males, migrate as older juveniles and mature in the ocean. Management implications include that (1) minimum size limits, as previously suggested, would not allocate harvest to older adults as intended because size does not indicate age among adult horseshoe crabs in the Delaware Bay population, and (2) the Shuster Horseshoe Crab Reserve, which has reduced harvest on the continental shelf, could be protecting older juveniles and newly mature females from harvest prior to their first

  11. Phosphate reactivity in long-term poultry litter-amended southern Delaware sandy soils

    USGS Publications Warehouse

    Arai, Y.; Livi, K.J.T.; Sparks, D.L.

    2005-01-01

    Eutrophication caused by dissolved P from poultry litter (PL)-amended agricultural soils has been a serious environmental concern in the Delaware-Maryland-Virginia Peninsula (Delmarva), USA. To evaluate state and federal nutrient management strategies for reducing the environmental impact of soluble P from long-term PL-amended Delaware (DE) soils, we investigated (i) inorganic P speciation; (ii) P adsorption capacity; and (iii) the extent of P desorption. Although the electron microprobe (EMP) analyses showed a strong correlation between P and Al/Fe, crystalline Al/Fe-P precipitates were not detected by x-ray diffraction (XRD). Instead, the inorganic P fractionation analyses showed high levels of oxalate extractable P, Al, and Fe fractions (615-858, 1215-1478, and 337-752 mg kg-1, respectively), which were susceptible to slow release during the long-term (30-d) P desorption experiments at a moderately acidic soil pHwater. The labile P in the short-term (24-h) desorption studies was significantly associated with oxalate and F extractable Fe and Al, respectively. This was evident in an 80% reduction maximum in total desorbable P from NH4 oxalate/F pretreated soils. In the adsorption experiments, P was strongly retained in soils at near targeted pH of lime (???6.0), but P adsorption gradually decreased with decreasing pH near the soil pHwater (???5.0). The overall findings suggest that P losses from the can be suppressed by an increase in the P retention capacity of soils via (i) an increase in the number of lime applications to maintain soil pHwater at near targeted pH values, and/or (ii) alum/iron sulfate amendments to provide additional Al- and Fe-based adsorbents. ?? Soil Science Society of America.

  12. Spring Migration Stopover Ecology of Avian Influenza Virus Shorebird Hosts at Delaware Bay.

    PubMed

    Maxted, Angela M; Sitters, Humphrey P; Luttrell, M Page; Dey, Amanda D; Kalasz, Kevin S; Niles, Lawrence J; Stallknecht, David E

    2016-05-01

    Although low pathogenicity avian influenza viruses (LPAIV) are detected in shorebirds at Delaware Bay annually, little is known about affected species habitat preferences or the movement patterns that might influence virus transmission and spread. During the 5-wk spring migration stopover period during 2007-2008, we conducted a radiotelemetry study of often-infected ruddy turnstones (Arenaria interpres morinella; n = 60) and rarely infected sanderlings (Calidris alba; n = 20) to identify locations and habitats important to these species (during daytime and nighttime), determine the extent of overlap with other AIV reservoir species or poultry production areas, reveal possible movements of AIV around the Bay, and assess whether long-distance movement of AIV is likely after shorebird departure. Ruddy turnstones and sanderlings both fed on Bay beaches during the daytime. However, sanderlings used remote sandy points and islands during the nighttime while ruddy turnstones primarily used salt marsh harboring waterfowl and gull breeding colonies, suggesting that this environment supports AIV circulation. Shorebird locations were farther from agricultural land and poultry operations than were random locations, suggesting selection away from poultry. Further, there was no areal overlap between shorebird home ranges and poultry production areas. Only 37% (22/60) of ruddy turnstones crossed into Delaware from capture sites in New Jersey, suggesting partial site fidelity and AIV gene pool separation between the states. Ruddy turnstones departed en masse around June 1 when AIV prevalence was low or declining, suggesting that a limited number of birds could disperse AIV onto the breeding grounds. This study provides needed insight into AIV and migratory host ecology, and results can inform both domestic animal AIV prevention and shorebird conservation efforts. PMID:27309084

  13. Horseshoe crab (Limulus polyphemus) reproductive activity on Delaware Bay beaches: Interactions with beach characteristics

    USGS Publications Warehouse

    Smith, D.R.; Pooler, P.S.; Loveland, R.E.; Botton, M.L.; Michels, S.F.; Weber, R.G.; Carter, Daniel B.

    2002-01-01

    We used results from a survey of horseshoe crab reproductive activity that was conducted in 1999 throughout Delaware Bay to examine the relationship between estimates of spawning females and egg deposition and analyze how that relationship varies with geography, time within a spawning season, beach morphology, and wave energy. We found that beach morphology and wave energy interacted with density of spawning females to explain variation in the density and distribution of eggs and larvae. For example, the quantity of eggs in surface sediment (i.e., eggs that are potentially available to foraging shorebirds) was associated with the density of spawning females, beach morphology, and wave energy. The association between beach morphology and live eggs in surface sediment was strong especially in late May (Percent Reduction in Error = 86% from regression tree model) where egg density was an order of magnitude higher on beaches <15 m wide (3.38*105 m-2; 90% CI: 2.29*105, 4.47*105) compared to wider beaches (1.49*104 m-2; 90% CI: 4.47*103, 2.53*104). Results also indicate that, among bay-front beaches, horseshoe crabs prefer to spawn on narrow beaches, possibly because of reduced wave energy. At peak periods of spawning activity, density of spawning females was inversely related to foreshore width on mid-latitude beaches within Delaware Bay (t = -2.68, 7 df, p = 0.03). Because the distribution of eggs across the foreshore varied with beach morphology and widened as the spawning season progressed, methods used to sample eggs need to be robust to variation in beach morphology and applicable regardless of when the samples are taken. Because beach morphology and wave energy were associated with the quantity of eggs in surface sediment, certain beach types may be critical to the conservation of shorebird foraging habitat.

  14. Ground-water contamination from lead shot at Prime Hook National Wildlife Refuge, Sussex County, Delaware

    USGS Publications Warehouse

    Soeder, Daniel J.; Miller, Cherie V.

    2003-01-01

    Prime Hook National Wildlife Refuge is located in southeastern Delaware in coastal lowlands along the margin of Delaware Bay. For 37 years, the Broadkiln Sportsman?s Club adjacent to the refuge operated a trap-shooting range, with the clay-target launchers oriented so that the expended lead shot from the range dropped into forested wetland areas on the refuge property. Investigators have estimated that up to 58,000 shotgun pellets per square foot are present in locations on the refuge where the lead shot fell to the ground. As part of the environmental risk assessment for the site, the U.S. Geological Survey (USGS) investigated the potential for lead contamination in ground water. Results from two sampling rounds in 19 shallow wells indicate that elevated levels of dissolved lead are present in ground water at the site. The lead and associated metals, such as antimony and arsenic (common shotgun pellet alloys), are being transported along shallow ground-water flowpaths toward an open-water slough in the forested wetland adjacent to the downrange target area. Water samples from wells located along the bank of the slough contained dissolved lead concentrations higher than 400 micrograms per liter, and as high as 1 milligram per liter. In contrast, a natural background concentration of lead from ground water in a well upgradient from the site is about 1 microgram per liter. Two water samples collected several months apart from the slough directly downgradient of the shooting range contained 24 and 212 micrograms per liter of lead, respectively. The data indicate that lead from a concentrated deposit of shotgun pellets on the refuge has been mobilized through a combination of acidic water conditions and a very sandy, shallow, unconfined aquifer, and is moving along ground-water flowpaths toward the surface-water drainage. Data from this study will be used to help delineate the lead plume, and determine the fate and transport of lead from the source area.

  15. U.S. Geological Survey National Water Census: Colorado River Basin Geographic Focus Area Study

    USGS Publications Warehouse

    Bruce, Breton W.; Clow, David W.; Maupin, Molly A.; Miller, Matthew P.; Senay, Gabriel B.; Sexstone, Graham A.; Susong, David D.

    2015-01-01

    The Colorado River Basin (CRB) and the Delaware and Apalachicola-Chattahoochee-Flint (ACF) River Basins were selected by the Department of the Interior for the first round of FASs because of the perceived water shortages in the basins and potential conflicts over water supply and allocations. After gathering input from numerous stakeholders in the CRB, the USGS determined that surface­-water resources in the basin were already being closely monitored and that the most important scientific contribution could be made by helping to improve estimates of four water­-budget components: evapotranspiration losses, snowpack hydrodynamics, water­-use information, and the relative importance of groundwater discharge in supporting streamflow across the basin. The purpose of this fact sheet is to provide a brief summary of the CRB FAS results as the study nears completion. Although some project results are still in the later stages of review and publication, this fact sheet provides an overall description of the work completed and cites the publications in which additional information can be found.

  16. Flood of May 23, 2004, in the Turkey and Maquoketa River basins, northeast Iowa

    USGS Publications Warehouse

    Eash, David A.

    2006-01-01

    Severe flooding occurred on May 23, 2004, in the Turkey River Basin in Clayton County and in the Maquoketa River Basin in Delaware County following intense thunderstorms over northeast Iowa. Rain gages at Postville and Waucoma, Iowa, recorded 72-hour rainfall of 6.32 and 6.55 inches, respectively, on May 23. Unofficial rainfall totals of 8 to 10 inches were reported in the Turkey River Basin. The peak discharge on May 23 at the Turkey River at Garber streamflow-gaging station was 66,700 cubic feet per second (recurrence interval greater than 500 years) and is the largest flood on record in the Turkey River Basin. The timing of flood crests on the Turkey and Volga Rivers, and local tributaries, coincided to produce a record flood on the lower part of the Turkey River. Three large floods have occurred at the Turkey River at Garber gaging station in a 13-year period. Peak discharges of the floods of June 1991 and May 1999 were 49,900 cubic feet per second (recurrence interval about 150 years) and 53,900 cubic feet per second (recurrence interval about 220 years), respectively. The peak discharge on May 23 at the Maquoketa River at Manchester gaging station was 26,000 cubic feet per second (recurrence interval about 100 years) and is the largest known flood in the upper part of the Maquoketa River Basin.

  17. Precambrian basement geology of the Permian basin region of west Texas and Eastern New Mexico: A geophysical perspective

    SciTech Connect

    Adams, D.C.; Keller, G.R.

    1996-03-01

    Because most of the Permian basin region of west Texas and southern New Mexico is covered by Phanerozoic rocks, other means must be found to examine the Precambrian upper crustal geology of the region. We have combined geologic information on the Precambrian from outcrops and wells with geophysical information from gravity and magnetic surveys in an integrated analysis of the history and structure of basement rocks in the region. Geophysical anomalies can be related to six Precambrian events: formation of the Early Proterozoic outer tectonic belt, igneous activity in the southern Granite-Rhyolite province, an episode of pre-Grenville extension, the Grenville orogeny, rifting to form the Delaware aulacogen, and Eocambrian rifting to form the early Paleozoic continental margin. Two geophysical features were studied in detail: the Abilene gravity minimum and the Central Basin platform gravity high. The Abilene gravity minimum is shown to extend from the Delaware basin across north-central Texas and is interpreted to be caused by a granitic batholith similar in size to the Sierra Nevada batholith in California and Nevada. This batholith appears to be related to formation of the southern Granite- Rhyolite province, possibly as a continental margin arc batholith. Because of this interpretation, we have located the Grenville tectonic front southward from its commonly quoted position, closer to the Llano uplift. Middle Proterozoic mafic intrusions are found to core the Central Basin platform and the Roosevelt uplift. These intrusions formed at about 1.1 Ga and are related in time to both the Mid-Continent rift system and the Grenville orogeny in Texas. Precambrian basement structures and changes in lithology have influenced the structure and stratigraphy in the overlying Permian basin, and thus have potential exploration significance.

  18. Monitoring estuarine circulation and ocean waste dispersion using an integrated satellite-aircraft-drogue approach. [Continental Shelf and Delaware Bay

    NASA Technical Reports Server (NTRS)

    Klemas, V. (Principal Investigator); Davis, G. R.; Wang, H.

    1975-01-01

    The author has identified the following significant results. An integrated satellite-aircraft-drogue approach was developed which employs remotely tracked expendable drogues together with satellite and aircraft observations of oil slicks, waste plumes, and natural tracers, such as suspended sediment. Tests conducted on the Continental Shelf and in Delaware Bay indicate that the system provides a cost effective means of monitoring current circulation and verifying oil slick and ocean waste dispersion models even under severe environmental conditions.

  19. 75 FR 21653 - Commercial Leasing for Wind Power on the Outer Continental Shelf (OCS) Offshore Delaware-Request...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-26

    ...The Minerals Management Service (MMS) invites submissions describing interest in obtaining one or more commercial leases for the construction of a wind energy project(s) on the OCS offshore Delaware. The MMS will use responses to this RFI to enable MMS to gauge specific interest in commercial development of OCS wind resources in the area described, as required by 43 U.S.C. 1337(p)(3). Parties......

  20. Variations in cementation exponent (m) and fracture porosity, Permian Delaware Mountain Group sandstones, Reeves and Culberson counties, Texas

    SciTech Connect

    Thomerson, M.D.; Arnold, M.D.; Asquith, G.B. )

    1994-03-01

    To calculate accurate volumetric oil reserves in the Permian Delaware Mountain Group, reliable values for cementation exponent (m) are required in addition to the other reservoir parameters. The porosity in these siltstone and very fine-grain sandstone reservoirs is intergranular and therefore the cementation exponent should be approximately 2.0. However, crossplots of core derived porosity vs. the formation resistivity factor (Fr) indicate an average cementation exponent (m) of 1.80. the lower cementation exponent is a result of minor amounts of fracture porosity. Comparison of the Delaware Mountain Group porosity vs. the Fr crossplot with the laboratory data of Rasmus (1987), reveals a similar decrease in Fr with a decrease in porosity due to the presence of a 1% fracture porosity. The lower cementation exponent (1.80) results in the calculation of substantially lower water saturations, which increases the amount of volumetric oil reserves. Analysis of three zones in the Bell Canyon and Cherry Canyon formations of the Delaware Mountain Group using standard methods of calculating water saturation resulted in volumetric oil reserves (based on 40 ac drainage) of 1.37 to 1.42 million bbl. However, using a cementation exponent of 1.80 resulted in volumetric oil reserves of 1.55 million bbl. The 9% to 13% increase in volumetric oil reserves from only three zones in the Bell Canyon and Cherry Canyon formations illustrates the critical importance of combining core analysis with log analysis when doing volumetric reserve calculations.