Crisis in Mexico: Assessing the Merida Initiative and its Impact on Us-Mexican Security

DTIC Science & Technology

2009-04-01

s poor economic conditions to extort large amounts of cash from individuals wishing to cross the US-Mexican border in search of a job and a better...people crossed the US-Mexican border illegally in 2001. 31 The US State Department‟s Trafficking in Persons Report classifies Mexico as a Tier 2 in...southern borders. 33 Mexico estimates that approximately 400,000 illegal immigrants cross the Mexican-Guatemalan border each year. President

Environmental Exposure of Children to Toxic Trace Elements (Hg, Cr, As) in an Urban Area of Yucatan, Mexico: Water, Blood, and Urine Levels.

PubMed

Arcega-Cabrera, F; Fargher, L; Quesadas-Rojas, M; Moo-Puc, R; Oceguera-Vargas, I; Noreña-Barroso, E; Yáñez-Estrada, L; Alvarado, J; González, L; Pérez-Herrera, N; Pérez-Medina, S

2018-05-01

Merida is the largest urban center in the Mexican State of Yucatan. Here domestic sewage is deposited in poorly built septic tanks and is not adequately treated. Because of contamination from such waste, water from the top 20 m of the aquifer is unsuitable for human consumption. Given this situation and because children are highly vulnerable to environmental pollution, including exposure to toxic trace elements, this study focused on evaluating the exposure of children to arsenic (As), chromium (Cr), and mercury (Hg) in water. It also evaluated the relationship between the levels of these elements in water and their concentrations in urine and blood. Among the 33 children monitored in the study, arsenic surpassed WHO limits for blood in 37% of the cases, which could result from the ingestion of poultry contaminated with organoarsenic compounds. In the case of WHO limits for Mercury, 65% of the water samples analyzed, 28% of urine samples, and 12% of blood samples exceeded them. Mercury exposure was correlated with biological sex, some lifestyle factors, and the zone in Merida in which children live. These data suggest that the levels of some toxic metals in children may be affected by water source, socioeconomic factors, and individual behavior.

Association between overweight and obesity with school performance in secondary students in Merida, Mexico.

PubMed

Salazar-Rendón, Juan Carlos; Méndez, Nina; Azcorra, Hugo

2018-01-01

Some studies have found a negative relationship between obesity and school performance in scholars. However, this topic has not been studied in depth in Mexico. The aim of this study was to analyze the association between overweight and obesity with school performance in secondary school students from Merida. Weight and height were measured, and body mass index was calculated in a sample of 566 secondary students in Merida. Nutritional status was classified in normal weight (-2-<+1 standard deviation [SD]), overweight (+1-<2 SD) and obesity (> + 2 SD) according to the World Health Organization criteria. The scores in language, mathematics and sciences were used as indicators of school performance. Good performance was considered when the scores were ≥8 points, and poor performance when scores were <8 points. Logistic regression models were used to analyse the association between the variables. The 44% of the sample met the criteria for overweight and obesity. After adjusting for school grade, type of school, number of absences, and Mayan surnames, we found that girls classified as obese had a significant risk of a poor performance in mathematics (odds ratio [OR]: 3.07; 95% confidence interval [CI]: 1.39-6.80) and language (OR: 2.55; 95% CI: 1.14-5.71) compared with those with healthy weight. Our results suggest that obesity represents a risk of having a lower school performance in girls but not in boys. Copyright: © 2018 Permanyer.

Comparative Study of Lead Concentration in Feathers of Urban and Rural Passerines in Merida, Mexico.

PubMed

Nava-Diaz, Remedios; Hoogesteijn, Almira L; Erosa, Mercy Dzul; Febles, Jose L; Mendez-Gonzalez, Rosa M

2015-10-01

Lead is a commonly monitored heavy metal because of potential health effects on exposed organisms. We quantified lead in secondary feathers of two passerine bird species, clay-colored thrushes (Turdus grayi) and great-tailed grackles (Quiscalus mexicanus), from an urban and a rural site in the municipality of Merida, Yucatan. Urban lead concentration was significantly higher than its rural counterpart for both species (p < 0.05). In the urban site, lead concentration was similar in both species (p = 0.14). However, data from the rural site showed that lead concentration was significantly higher in thrush feathers (p < 0.05). Lead levels herein presented are among the lowest ever reported suggesting that either lead accumulation or absorption is limited. Finally, our data seem to support the hypothesis that species feeding ecology plays a major role in lead accumulation.

Height Growth and Percentage of Body Fat in Relation to Early Menarche in Girls from Merida, Yucatan, Mexico.

PubMed

Datta Banik, Sudip; Mendez, Nina; Dickinson, Federico

2015-01-01

Early menarche (EM) (i.e., age at menarche [AAM] <12 years of age) is related to short height and higher body fatness. In a mixed-longitudinal study done in Merida, Yucatan, height, body mass index (BMI), and percentage of body fat (BF%) were recorded at a one-year interval among 258 postmenarcheal (EM = 94) girls. Anthropometric measurements were recorded of the age cohorts in 2008-09 when participants were 13-17 years of age (baseline), and in the one-year follow-up study (± 6 days) the girls were 14-18 years of age. The BF% was estimated through bioelectrical impedance analysis. Mean AAM was 10.59 years in EM girls and 12.54 years in not early menarche (NEM) girls. Height growth (cm/year) was greater in NEM girls. Mean values of BMI, BF%, and frequencies of stunting (low height-for-age) and excess weight (overweight + obesity) were higher in EM girls than in their NEM age peers.

Deltamethrin resistance in Aedes aegypti results in treatment failure in Merida, Mexico.

PubMed

Vazquez-Prokopec, Gonzalo M; Medina-Barreiro, Anuar; Che-Mendoza, Azael; Dzul-Manzanilla, Felipe; Correa-Morales, Fabian; Guillermo-May, Guillermo; Bibiano-Marín, Wilbert; Uc-Puc, Valentín; Geded-Moreno, Eduardo; Vadillo-Sánchez, José; Palacio-Vargas, Jorge; Ritchie, Scott A; Lenhart, Audrey; Manrique-Saide, Pablo

2017-06-01

The operational impact of deltamethrin resistance on the efficacy of indoor insecticide applications to control Aedes aegypti was evaluated in Merida, Mexico. A randomized controlled trial quantified the efficacy of indoor residual spraying (IRS) against adult Ae. aegypti in houses treated with either deltamethrin (to which local Ae. aegypti expressed a high degree of resistance) or bendiocarb (to which local Ae. aegypti were fully susceptible) as compared to untreated control houses. All adult Ae. aegypti infestation indices during 3 months post-spraying were significantly lower in houses treated with bendiocarb compared to untreated houses (odds ratio <0.75; incidence rate ratio < 0.65) whereas no statistically significant difference was detected between the untreated and the deltamethrin-treated houses. On average, bendiocarb spraying reduced Ae. aegypti abundance by 60% during a 3-month period. Results demonstrate that vector control efficacy can be significantly compromised when the insecticide resistance status of Ae. aegypti populations is not taken into consideration.

Computer Simulation of Developmental Processes and ...

EPA Pesticide Factsheets

see attached presentation slides Dr. Knudsen has been invited to give a lecture at XIV International Congress of Toxicology (IUTOX) in Merida-Mexico October 2-6, 2016. He was invited to speak in a workshop on “Developmental Toxicology, Different Models, Different Endpoints” and will give a lecture entitled

U.S.-Mexican Security Cooperation: the Merida Initiative and Beyond

DTIC Science & Technology

2010-07-29

Department to USAID for implementation. 71 “Cárteles Perturban al Sistema Carcelario,” El Universal, June 18, 2010. 72 Silvia Otero, “No Investigan 95...a Web .” Milenio. July 28, 2010. U.S.-Mexican Security Cooperation: the Mérida Initiative and Beyond Congressional Research Service 27 Similar

U.S.- Mexican Security Cooperation: The Merida Initiative and Beyond

DTIC Science & Technology

2010-07-29

Department to USAID for implementation. 71 “Cárteles Perturban al Sistema Carcelario,” El Universal, June 18, 2010. 72 Silvia Otero, “No Investigan 95...a Web .” Milenio. July 28, 2010. U.S.-Mexican Security Cooperation: the Mérida Initiative and Beyond Congressional Research Service 27 Similar

Reflections on WILD9

Treesearch

David J. Parsons

2010-01-01

The 9th World Wilderness Congress (WILD9), held November 6-13 in Merida, Mexico, provided a vivid reminder of the magnitude of the challenges - both environmental and human - facing advocates for the protection of wilderness resources and values. From a U.S. government scientist's perspective, it was also a reminder of the differences in wilderness focused...

Kangaroo mother care for low birthweight infants: a randomized controlled trial in different settings.

PubMed

Cattaneo, A; Davanzo, R; Worku, B; Surjono, A; Echeverria, M; Bedri, A; Haksari, E; Osorno, L; Gudetta, B; Setyowireni, D; Quintero, S; Tamburlini, G

1998-09-01

A randomized controlled trial was carried out for 1 y in three tertiary and teaching hospitals, in Addis Ababa (Ethiopia), Yogyakarta (Indonesia) and Merida (Mexico), to study the effectiveness, feasibility, acceptability and cost of kangaroo mother care (KMC) when compared to conventional methods of care (CMC). About 29% of 649 low birthweight infants (LBWI; 1000-1999 g) died before eligibility. Of the survivors, 38% were excluded for various reasons, 149 were randomly assigned to KMC (almost exclusive skin-to-skin care after stabilization), and 136 to CMC (warm room or incubator care). There were three deaths in each group and no difference in the incidence of severe disease. Hypothermia was significantly less common in KMC infants in Merida (13.5 vs 31.5 episodes/100 infants/d) and overall (10.8 vs 14.6). Exclusive breastfeeding at discharge was more common in KMC infants in Merida (80% vs 16%) and overall (88% vs 70%). KMC infants had a higher mean daily weight gain (21.3 g vs 17.7 g) and were discharged earlier (13.4 vs 16.3 d after enrolment). KMC was considered feasible and presented advantages over CMC in terms of maintenance of equipment. Mothers expressed a clear preference for KMC and health workers found it safe and convenient. KMC was cheaper than CMC in terms of salaries (US$ 11,788 vs US$ 29,888) and other running costs (US$ 7501 vs US$ 9876). This study confirms that hospital KMC for stabilized LBWI 1000-1999 g is at least as effective and safe as CMC, and shows that it is feasible in different settings, acceptable to mothers of different cultures, and less expensive. Where exclusive breastfeeding is uncommon among LBWI, KMC may bring about an increase in its prevalence and duration, with consequent benefits for health and growth. For hospitals in low-income countries KMC may represent an appropriate use of scarce resources.

Creative Problem Solving How Do Undergraduates Perceive the Teaching Practice of Their Professors?

ERIC Educational Resources Information Center

Briceño, Efrain Duarte; Diaz-Mohedo, Maria Teresa; Chan, Jorge Carlos Aguayo; Ballote, Guillermo Baeza

2018-01-01

The research question was inquiring the undergraduates' perception of their professors' practice regarding whether they make use of the creative problem solving (CPS) as a competence for teaching. The study was performed in a public university located in the urban area of Merida City, Yucatan, Mexico, where a total of 247 undergraduates from the…

Aventuras en Mexico: Proceedings of the International Conference on Outdoor Recreation and Education (ICORE) (11th, Merida, Mexico, November 6-8, 1997).

ERIC Educational Resources Information Center

Jones, Rob, Comp.; Wilkinson, Brian, Comp.

This proceedings contains 21 papers and panel summaries from the 1997 International Conference on Outdoor Recreation and Education. Introductory items include conference highlights, history, and schedule overview. Entries are: "Outdoor Leadership 2000" (Simon Priest); "Permits To Operate: Doing What We Do with the Proper…

Gulf of Mexico, coast of Yucatan, as seen from the Apollo 7 spacecraft

NASA Image and Video Library

1968-10-13

AS07-05-1635 (13 Oct. 1968) --- Gulf of Mexico, coast of Yucatan, Mexico, as seen from the Apollo 7 spacecraft during its 33rd revolution of Earth. Note road leading to city of Merida which is under cloud cover. Photographed from an altitude of 123 nautical miles, at ground elapsed time of 52 hours and 37 minutes.

Seroprevalence of feline leukemia virus, feline immunodeficiency virus and heartworm infection among owned cats in tropical Mexico.

PubMed

Ortega-Pacheco, Antonio; Aguilar-Caballero, Armando J; Colin-Flores, Rafael F; Acosta-Viana, Karla Y; Guzman-Marin, Eugenia; Jimenez-Coello, Matilde

2014-06-01

Several infectious agents may be distributed within a healthy population of cats where diverse risk factors predispose them to come into contact with pathogens. Blood samples from 227 owned cats in Merida, Mexico, were collected with the objective of determining the seroprevalence and associated risk factors of feline leukemia virus (FeLV) and Dirofilaria immitis antigen, and feline immunodeficiency virus (FIV) antibody. Serological detection of FeLV and D immitis antigens, and FIV antibodies was performed using the commercial kit SNAP Feline Triple Test. The prevalence was found to be 7.5% for FeLV, 2.5% for FIV and 0% for D immitis. Adult cats were at a higher risk of coming into contact with FeLV (P <0.01) than younger cats. Owing to its low prevalence, a risk factor analysis was not performed for FIV. The prevalence of retroviral infections found in this study was low, but within the limits reported in the different geographical areas of the world. Cases of filariosis in the domestic cats of Merida, Mexico, may be absent or very low; however, the low sample size may have influenced these results. © ISFM and AAFP 2013.

Paleogeographic evolution of foldbelts adjacent to petroleum basins of Venezuela and Trinidad

DOE Office of Scientific and Technical Information (OSTI.GOV)

Goodman, E.D.; Koch, P.S.; Summa, L.L.

1996-08-01

The foldbelts of Venezuela and Trinidad have shaped the history of adjacent sedimentary basins. A set of paleogeographic maps on reconstructed bases depict the role of foldbelts in the development of the sedimentary basins of Venezuela. Some of the foldbelts are inverted, pre-Tertiary graben/passive margin systems. Other foldbelts are allochthonous nappes or parautochthons that override the Mesozoic passive margin hinge without inversion. The emergence of these foldbelts changed the course of existing river systems and provided a new source for sediments and maturation in adjacent deeps. The Merida Andes area was remobilized beginning in the Early Miocene as a zonemore » of lateral shear, along which the Bonaire Block has moved over 200 km to the northeast, dismembering the Maracaibo and Barinas basins. Late Miocene to Recent transpression and fault reactivation have driven rapid Andean uplift with thrust-related subsidence and maturation (e.g., SE Maracaibo foredeep). To the east, uplift and erosion of the Serrania del Interior (1) curtailed mid-Tertiary fluvial systems flowing northward from the igneous and sedimentary rocks of the Guyana Shield, deflecting them eastward, and (2) removed the thick early Miocene foredeep fill into a younger foredeep. Thus, the fold-thrust belts and sedimentary basins in this region are linked in their evolutionary histories.« less

Probability of Damage to Sidewalks and Curbs by Street Trees in the Tropics

Treesearch

John K. Francis; Bernard R. Parresol; Juana Marin de Patino

1996-01-01

For 75 trees each of 12 species growing along streets in San Juan, Puerto Rico and Merida, Mexico, diameter at breast height and distance to sidewalk or curb was measured and damage (cracking or raising) was evaluated. Logistic analysis was used to construct a model to predict probability of damage to sidewalk or curb. Distance to the pavement, diameter of the tree,...

Science and stewardship to protect and sustain wilderness values: Proceedings of the Ninth World Wilderness Congress Symposium

Treesearch

Brooke B. McBride

2011-01-01

WILD9 convened in Merida, Yucatan, Mexico, in 2009 with a challenging agenda. For more than eight days, 1,800 delegates from more than 50 nations gathered to feel, think, and act (siente, piensa, actua) on many important conservation issues requiring international cooperation. The compilation of papers from the Symposium on Science and Stewardship to Protect and...

Measuring the Wavelength of a Diode Laser and the Birefringence of Mica: The Experimental Examination of the IPHO 40 Held in Mexico

ERIC Educational Resources Information Center

Moran-Lopez, J. L.; Ortiz, M. E.; Rodriguez, L. F.; Romero-Rochin, V.

2010-01-01

The experimental examination applied in the 40th International Physics Olympiad held in Merida, Yucatan, Mexico, is presented. The examination consisted of two parts: (1) based on the measurements of a diffraction pattern produced by a diode laser impinging on a sharp edge of a razor blade, the students were asked to estimate the wavelength of the…

Applying Counterinsurgency Doctrine as a Strategy to Defeat the Mexican Cartels

DTIC Science & Technology

2012-03-01

profits, increase cartel communications (ripe for intercept), and create operational risk . All of which would lead to greater targeting opportunities as...Homeland Security, 2006). 19 7 For a detailed description of Merida and its intent, See William R. Brownfield , Remarks before the House Foreign...University Press, 2010), 53. 12 Lisa J. Campbell, Los Zetas: operational assessment , Small Wars & Insurgencies, 21, No 1 (March 2010). 13 Petraeus

The Geology of Yemen: An Annotated Bibliography of Yemen’s Geology, Geography and Earth Science

DTIC Science & Technology

2012-01-01

pneumonia by improving maternal nutrition , health education, promoting breastfeeding, and preventing rickets and nutritional anaemia among the...Monitoring, Modeling, and Management. Merida, Yucatan , Mexico. Bauman, Paul, Sallomy, Janan, Lyness, Lucien, et al. 1996. “The Exploration for a Deep...shopping must also be educated on health and nutrition matters. Due to the traditional segregation of the sexes, this training will have to be

The right to information and their exceptions in medical practices in the Iranian legal system.

PubMed

Sheykh-Talimi, Maysam; Shariati-Nasab, Sadegh; Zare, Mohammad Kazem; Omani-Samani, Reza

2016-01-01

The right to information Act was implemented in the Iranian legal system through accession of the Merida Convention ensuring the right to information as a fundamental right for the public. One significant aspects of this subject is the ratification of the "Disclosure and Access to Information Act" by which it is recognized as a right of all Persian individuals and citizens to access state-held information in Iran administration. The Iranian legislature, with regard to the role of access to information and its significance, clarified the scope, permitted subjects of access, and exceptions of the right to state-held information. In this essay, we will discuss the legal aspects and scope of ensuring access to medical information in the Iranian statutes and their exceptions. It is argued that the Iranian legislation ensures the principle of maximum disclosure, while sensitive subjects', specially classified and private information, are exempted. Therefore, the related rules in Iran's statutes not only do not threaten patient's information, but also protect them by criminalizing the breaching of the mentioned right.

Merida Initiative and Effectiveness: An Analysis of Supply-Side Policy

DTIC Science & Technology

2013-06-01

with Colombian President Julio Cesar Turbay (1978–1982) to frame the drug war within a law enforcement structure.14 In Colombia, the strategy focused...cultivation into neighboring Colombia, resulted in a shift of coca production, which allowed Colombian cartels to increase their cocaine trade...their work, they postulate that reports of U.S.- Colombian success in eradication efforts in 2002–2003 failed to consider the “balloon effect

The Two Subduction Zones of the Southern Caribbean: Lithosphere Tearing and Continental Margin Recycling in the East, Flat Slab Subduction and Laramide-Style Uplifts in the West

NASA Astrophysics Data System (ADS)

Levander, A.; Bezada, M. J.; Niu, F.; Schmitz, M.

2015-12-01

The southern Caribbean plate boundary is a complex strike-slip fault system bounded by oppositely vergent subduction zones, the Antilles subduction zone in the east, and a currently locked Caribbean-South American subduction zone in the west (Bilham and Mencin, 2013). Finite-frequency teleseismic P-wave tomography images both the Atlanic (ATL) and the Caribbean (CAR) plates subducting steeply in opposite directions to transition zone depths under northern South America. Ps receiver functions show a depressed 660 discontinuity and thickened transition zone associated with each subducting plate. In the east the oceanic (ATL) part of the South American (SA) plate subducts westward beneath the CAR, initiating the El Pilar-San Sebastian strike slip system, a subduction-transform edge propagator (STEP) fault (Govers and Wortel, 2005). The point at which the ATL tears away from SA as it descends into the mantle is evidenced by the Paria cluster seismicity at depths of 60-110 km (Russo et al, 1993). Body wave tomography and lithosphere-asthenosphere boundary (LAB) thickness determined from Sp and Ps receiver functions and Rayleigh waves suggest that the descending ATL also viscously removes the bottom third to half of the SA continental margin lithospheric mantle as it descends. This has left thinned continental lithosphere under northern SA in the wake of the eastward migrating Antilles subduction zone. The thinned lithosphere occupies ~70% of the length of the El Pilar-San Sebastian fault system, from ~64oW to ~69oW, and extends inland several hundred kilometers. In northwestern SA the CAR subducts east-southeast at low angle under northern Colombia and western Venezuela. The subducting CAR is at least 200 km wide, extending from northernmost Colombia as far south as the Bucaramanga nest seismicity. The CAR descends steeply under Lake Maracaibo and the Merida Andes. This flat slab is associated with three Neogene basement cored, Laramide-style uplifts: the Santa Marta block, the Perija Range, and the Merida Andes (Kellogg and Bonini, 1982). The steep descent of the CAR under Maracaibo implies that the CAR plate is torn somewhere between the Merida Andes and the Caribbean Sea, where it forms the ocean floor. An upcoming broadband seismic experiment will examine the CAR flat slab and the suspected slab tear in detail.

Bibliography of Leishmania and Leishmanial Diseases. Volume 1

DTIC Science & Technology

1980-06-01

Sea 7 Rev. Med.- Yucatan Paulo, REVISTA MEDICA DE YUCATAN . Merida. Rev, Paliclin, Caracas Rev. Menn. Med. , Brazil REVISTA DE LA POLICLINICA, CARACAc...Parasit., 41(2):126-136. 799 pp. CHAKG, P. Y.; TENG, L. T.; SUNG, Y. (1957A) Interactions T. & LIU, Y. C. (1958A) Kala-azar between nutrition and...of nutrition in experimental Infectivan. Bact. Rev. , 13:99-134. CLINTON, B. A.; STAUBER, L. A.& CLRT .(1959A) Comparative PALCZUK, N. C. (1969A

Crew Earth Observations (CEO) by Expedition Five Crew

NASA Image and Video Library

2002-09-16

ISS005- E-15375 (22 September 2002) --- This digital still camera's picture, taken from the International Space Station (ISS) on September 22, 2002, shows the central eye of Hurricane Isidore. The eye become less defined as the hurricane stalled and weakened over the Yucatan Peninsula near Merida. Onboard the orbital outpost for the Expedition Five mission are cosmonauts Valery G. Korzun, commander, and Sergei Y. Treschev, flight engineer, both with Rosaviakosmos; and astronaut Peggy A. Whitson, flight engineer.

Mitigating Corruption in Government Security Forces: The Role of Institutions, Incentives, and Personnel Management in Mexico

DTIC Science & Technology

2011-01-01

economy to freer trade, and helped liberate controls over business, the press, and civil society. The deterioration of the political system also led to a...munici- pal population to identify and allocate funds to eligible municipalities ( Estados Unidos Mexicanos, 2008). The two munici- palities with the...Mexico City, Mexico, “Merida Initiative at a Glance: Combating Violence in Juárez, September 2010. Bibliography 61 Estados Unidos Mexicanos, Diario

Provenance of Cretaceous-Pliocene Clastic Sediments in the Tachira Saddle, Western Venezuela, and Implications for Sediment Dispersal Patterns in the Northern Andes

NASA Astrophysics Data System (ADS)

Gomez, Ali Ricardo

Northwestern South America is highly deformed due to the transpressive plate boundary associated with complex interactions between the Caribbean plate, the South American plate, the Nazca plate and the Panama arc. Previous studies suggest that the Cenozoic uplift of the Merida Andes and Eastern Cordillera of Colombia affected sediment dispersal patterns in the region, shifting from a Paleocene foreland basin configuration to the modern isolated basins. Well-exposed Cretaceous to Pliocene strata in the Tachira Saddle provides a unique opportunity to test proposed sediment dispersal patterns in the region. U-Pb detrital zircon geochronology and supplementary XRD heavy mineral data are used together to document the provenance of the Tachira Saddle sediments and refine the sediment dispersal patterns in the region. Results from the U-Pb detrital zircon geochronology show that there are six age groups recorded in these samples. Two groups are related to the Precambrian Guyana shield terranes and Putumayo basement in the Eastern Cordillera, and four groups are related to different magmatic episodes occurring during the Andean orogenic process. The transition between the Cretaceous passive margin and the Paleocene foreland basin and the initial uplift of the Eastern Cordillera and the uplift of the Merida Andes by the Early Miocene were also recorded in the Tachira saddle detrital zircon signature.

The effect of socioeconomic indicators and macronutrient intake rate on body composition in adolescents 12 to 16 years old in Merida, Yucatan.

PubMed

Datta Banik, Sudip; Andrade Olalde, Ana Carolina; Rodriguez, Luis; Dickinson, Federico

2014-01-01

Intake pattern of macronutrients (protein, lipid, carbohydrate) and socioeconomic status (SES) are major causes of high child and adolescent overweight and obesity prevalences in Mexico. An evaluation was done of the relationship between body mass index (BMI)-based nutritional status and body composition (BC), macronutrient intake rates (MIR) and SES indicators in 127 boys and 156 girls aged 12 to 16 years attending schools in Merida, Mexico. Anthropometric variables included height, weight, and BMI. The BC (body fat mass, fat-free mass, dry lean mass) was estimated by bioelectrical impedance (Bodystat 1500 MDD). The MIR were estimated following FAO/WHO/UNO standard (1985). Proxy socioeconomic indicators included parents' age (as a maturity indicator) and education, fathers' occupation, school type and monthly household food expenditure per capita. Excess weight (overweight + obesity) assessed by BMI, was higher in boys (40.16 %) than in girls (33.97 %). Boys had higher BMI, less fat mass and higher fat-free mass than girls. The MIR did not vary significantly in response to age, sex, BC or SES. Participants with higher SES were taller and heavier, had higher fat-free mass and lower fat mass. In the studied adolescents, anthropometric and BC values, and overweight and obesity rates were more associated with SES than MIR.

PRI and the Beyond Merida Initiative

DTIC Science & Technology

2011-10-28

candidate, Andres Manuel Lopez , called for the de- militarization of our bilateral agenda while speaking to a U.S. think tank.9 Santiago Creel Miranda, a... manuel -l%C3%B3pez- obrador (accessed October 16, 2011) 10 Elimparcial. “Anti-narco fight will change if president: Creel,” http...Wilson Institute for Scholars: Mexico Institute. http://www.wilsoncenter.org/event/dialogues-mexicodi%C3%A1logos-con-m%C3%A9xico- featuring- andr %C3%A9s

Rethinking Merida’s Priorities: The Time is Now to Invest in Homeland Security

DTIC Science & Technology

2011-10-28

other provision of law , no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a...would constrain DTO operations by fortifying law enforcement institutions on both sides of the U.S.-Mexico border while applying a progressive approach...the Bush-Calderón approach, termed the Mérida Initiative, in Public Law 110-252. This three-year economic assistance package appropriated $1.6

Waist circumference cut-off in relation to body mass index and percentage of body fat in adult women from Merida, Mexico.

PubMed

Datta Banik, Sudip; Dickinson, Federico

2015-01-01

Waist circumference (WC) as an index of central obesity is related to body mass index (BMI) and percent body fat (PBF). Waist circumference data were analyzed to identify a WC cut-off for adult women with respect to BMI-based obesity (≥ 30 kg/m²) and PBF. The sample was 138 women aged 22 to 41 years with Maya ancestry (based on surnames) in Merida, Yucatan, measured during 2011 - 2013. Anthropometric parameters included height, body weight (BW), and BMI. The PBF was estimated by bioelectrical impedance. Estimated cut-offs per centimeter WC (80 - 99 cm) were predicted by BMI for obesity (≥ 30 kg m⁻²; binomial: Yes = 1, No = 0) and PBF (continuous variable) using binary logistic regression analyses. Mean age was 32 years, mean BMI was 29 kg m(-2) and mean WC was 89 cm. The sample exhibited high PBF (44 %), and high rates of overweight (44%) and obesity (40%). The threshold WC (≥ 93 cm) had high sensitivity (80%), specificity (82%), Youden Index value (0.62), and correct classification rate (82%). The area under the receiver operating characteristic curve was 88 %. The WC ≥ 93 cm cut-off had corresponding values for mean BMI (34 kg m⁻²) and PBF (47%). The optimal WC cut-off at 93 cm significantly identified central obesity for BMI ≥ 30 kg m⁻² and PBF for this sample.

Merida virus, a putative novel rhabdovirus discovered in Culex and Ochlerotatus spp. mosquitoes in the Yucatan Peninsula of Mexico.

PubMed

Charles, Jermilia; Firth, Andrew E; Loroño-Pino, Maria A; Garcia-Rejon, Julian E; Farfan-Ale, Jose A; Lipkin, W Ian; Blitvich, Bradley J; Briese, Thomas

2016-04-01

Sequences corresponding to a putative, novel rhabdovirus [designated Merida virus (MERDV)] were initially detected in a pool of Culex quinquefasciatus collected in the Yucatan Peninsula of Mexico. The entire genome was sequenced, revealing 11 798 nt and five major ORFs, which encode the nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G) and RNA-dependent RNA polymerase (L). The deduced amino acid sequences of the N, G and L proteins have no more than 24, 38 and 43 % identity, respectively, to the corresponding sequences of all other known rhabdoviruses, whereas those of the P and M proteins have no significant identity with any sequences in GenBank and their identity is only suggested based on their genome position. Using specific reverse transcription-PCR assays established from the genome sequence, 27 571 C. quinquefasciatus which had been sorted in 728 pools were screened to assess the prevalence of MERDV in nature and 25 pools were found positive. The minimal infection rate (calculated as the number of positive mosquito pools per 1000 mosquitoes tested) was 0.9, and similar for both females and males. Screening another 140 pools of 5484 mosquitoes belonging to four other genera identified positive pools of Ochlerotatus spp. mosquitoes, indicating that the host range is not restricted to C. quinquefasciatus. Attempts to isolate MERDV in C6/36 and Vero cells were unsuccessful. In summary, we provide evidence that a previously undescribed rhabdovirus occurs in mosquitoes in Mexico.

Merida virus, a putative novel rhabdovirus discovered in Culex and Ochlerotatus spp. mosquitoes in the Yucatan Peninsula of Mexico

PubMed Central

Charles, Jermilia; Firth, Andrew E.; Loroño-Pino, Maria A.; Garcia-Rejon, Julian E.; Farfan-Ale, Jose A.; Lipkin, W. Ian; Briese, Thomas

2016-01-01

Sequences corresponding to a putative, novel rhabdovirus [designated Merida virus (MERDV)] were initially detected in a pool of Culex quinquefasciatus collected in the Yucatan Peninsula of Mexico. The entire genome was sequenced, revealing 11 798 nt and five major ORFs, which encode the nucleoprotein (N), phosphoprotein (P), matrix protein (M), glycoprotein (G) and RNA-dependent RNA polymerase (L). The deduced amino acid sequences of the N, G and L proteins have no more than 24, 38 and 43 % identity, respectively, to the corresponding sequences of all other known rhabdoviruses, whereas those of the P and M proteins have no significant identity with any sequences in GenBank and their identity is only suggested based on their genome position. Using specific reverse transcription-PCR assays established from the genome sequence, 27 571 C. quinquefasciatus which had been sorted in 728 pools were screened to assess the prevalence of MERDV in nature and 25 pools were found positive. The minimal infection rate (calculated as the number of positive mosquito pools per 1000 mosquitoes tested) was 0.9, and similar for both females and males. Screening another 140 pools of 5484 mosquitoes belonging to four other genera identified positive pools of Ochlerotatus spp. mosquitoes, indicating that the host range is not restricted to C. quinquefasciatus. Attempts to isolate MERDV in C6/36 and Vero cells were unsuccessful. In summary, we provide evidence that a previously undescribed rhabdovirus occurs in mosquitoes in Mexico. PMID:26868915

Missouri river navigation : data on commodity shipments for four states served by the Missouri river and two states served by both the Missouri and Mississippi rivers.

DOT National Transportation Integrated Search

2009-01-15

GAO determined: (1) the annual and total tonnage of commodity shipments for each state served by the Missouri River, and (2) the comparable tonnage of commodity shipments transported on the Mississippi River for states served by both the Missouri and...

Specklinia dunstervillei, a New Species Long Confused with Specklinia endotrachys (Orchidaceae: Pleurothallidinae).

PubMed

Karremans, Adam P; Pupulin, Franco; Gravendeel, Barbara

2015-01-01

Specklinia dunstervillei is described as a new species in recognition of the distinctness of a Venezuelan species related to and confused with Specklinia endotrachys. It was illustrated for the first time by G. C. K. Dunsterville in 1963 from a plant collected in Trujillo on the Cordillera de Merida. The newly named species can be easily recognized by its small habit, short leaves and small reddish-orange flowers, the non-ascending dorsal sepal and the obtuse petals that are shortly apiculate. Specklinia dunstervillei is formally described and illustrated once again and compared morphologically and genetically with its closest relatives.

the Large Aperture GRB Observatory

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bertou, Xavier

2009-04-30

The Large Aperture GRB Observatory (LAGO) aims at the detection of high energy photons from Gamma Ray Bursts (GRB) using the single particle technique (SPT) in ground based water Cherenkov detectors (WCD). To reach a reasonable sensitivity, high altitude mountain sites have been selected in Mexico (Sierra Negra, 4550 m a.s.l.), Bolivia (Chacaltaya, 5300 m a.s.l.) and Venezuela (Merida, 4765 m a.s.l.). We report on the project progresses and the first operation at high altitude, search for bursts in 6 months of preliminary data, as well as search for signal at ground level when satellites report a burst.

Prevalence of the metabolic syndrome, insulin resistance index, leptin and thyroid hormone levels in the general population of Merida (Venezuela).

PubMed

Uzcátegui, Euderruh; Valery, Lenin; Uzcátegui, Lilia; Gómez Pérez, Roald; Marquina, David; Baptista, Trino

2015-06-01

The metabolic syndrome (MetSyn) is a significant risk factor for cardiovascular events, but scarce information exists about its frequency in Venezuela. In this cross-sectional study, we quantified the prevalence of the MetSyn in a probabilistic, stratified sample of 274 subjects aged > or =18 years from the Libertador district in Merida, Venezuela. Secondary outcomes were the measurement of thyroid hormones (free T4 and TSH), leptin levels, and insulin resistance index (HOMA2-IR). The frequency of MetSyn (percentage +/- 95% confidence interval) according to several diagnostic criteria was as follows: National Cholesterol Education Panel (NCEP, original): 27.4% (22.1-32.7); modified NCEP: 31.8% (26.3-37.3); International Diabetes Federation: 40.9% (35.1-46.7); Latin American Diabetes Association: 27% (21.7-32.3), and Venezuelan criteria: 31.8% (26.3-37.3). The MetSyn was more frequent in males than in females with most diagnostic criteria. The estimated prevalence of type 2 diabetes mellitus was 2.9% either according to the patients' self reports or to fasting glucose level found to be above 126 mg/dL. Abnormal HOMA2-IR index, free T4 and TSH (above the 95th percentile) were detected in 4.5%, 4.4% and 5.1% of the sample, respectively. Free T4 and TSH levels below the 5th percentile were detected in 4.4% and 4.7% of subjects respectively. These values are presented for comparisons with forthcoming studies in specific clinical populations. While studies are being conducted about the different definitions of the MetSyn in Venezuela, we recommend analyzing and publishing local research data with all the available criteria so as to allow comparisons with the results already reported in the literature.

Nutritional status of Maya children, their mothers, and their grandmothers residing in the City of Merida, Mexico: revisiting the leg-length hypothesis.

PubMed

Azcorra, Hugo; Varela-Silva, Maria Inês; Rodriguez, Luis; Bogin, Barry; Dickinson, Federico

2013-01-01

To test the hypothesis that leg length-relative-to-stature is a more sensitive indicator of nutrition and health than is total height (HT) or sitting height (SH) in a sample of 109 triads of urban Maya children (6.0-8.99 years), their mothers, and maternal grandmothers from Merida, Mexico. From September 2011 to June 2012, the following factors were obtained from all participants: (1) HT, SH, and leg length (LL); (2) the sitting height ratio (SHR = [SH × 100]/HT), relative leg length index (RLLI = [LL × 100]/height), and percentiles and z-scores of HT, SH, and LL were calculated; and (3) the percentages of stunting for children or very short ZHT for the adults, short ZSH, and short ZLL: HT-for-age, SH-for-age, or LL-for-age below the 5th percentile of the reference were calculated. Correlations were performed to examine the association between z-scores of HT, SH, and LL among three generations. Stunting in children was 11% (short ZLL = 29%, short ZSH = 7%). Short ZHT was present in 71% of mothers (short ZLL = 54%, short ZSH = 50%) and 90% of grandmothers (short ZLL = 69%, short ZSH = 83%). Significant correlations in ZHT, ZSH, and ZLL were found in mother-to-child and grandmother-to-mother, with the strongest correlations for ZLL. These findings support the hypothesis for children and mothers. Based on ZLL, there is evidence that childhood and nutrition have improved somewhat for each younger generation. Persistent environmental adversity during growth resulted in growth deficits for LL and SH for the mothers and grandmothers. Copyright © 2013 Wiley Periodicals, Inc.

Blood Feeding Status, Gonotrophic Cycle and Survivorship of Aedes (Stegomyia) aegypti (L.) (Diptera: Culicidae) Caught in Churches from Merida, Yucatan, Mexico.

PubMed

Baak-Baak, C M; Ulloa-Garcia, A; Cigarroa-Toledo, N; Tzuc Dzul, J C; Machain-Williams, C; Torres-Chable, O M; Navarro, J C; Garcia-Rejon, J E

2017-12-01

Blood-feeding status, gonotrophic cycle, and survival rates of Aedes (Stegmyia) aegypti (L.) was investigated in catholic churches from Merida, Yucatan. Female Ae. aegypti were caught using backpack aspirator during 25 consecutive days in rainy (2015) and dry season (2016). Blood-feeding status was determined by external examination of the abdomen and classified as unfed, fed, and gravid. Daily changes in the parous-nulliparous ratio were recorded, and the gonotrophic cycle length was estimated by a time series analysis. Also, was observed the vitellogenesis to monitoring egg maturity. In total, 408 females Ae. aegypti were caught, and there was a significant difference in the number of females collected per season (Z = -6.729, P ≤ 0.05). A great number was caught in the rainy season (n = 329). In the dry season, 79 females were caught, which the fed females were twice greatest than the unfed. The length of gonotrophic cycle was estimated on the base of a high correlation coefficient value appearing every 4 days in rainy at 26.7 ± 1.22°C, and 3 days in dry season at 29.8 ± 1.47°C. The daily survival rate of the Ae. aegypti population was higher in both seasons, 0.94 and 0.93 for the rainy and dry season, respectively. The minimum time estimated for developing mature eggs after blood feeding was similar in both seasons (3.5 days in rainy versus 3.25 days in dry). The measurement of the vectorial capacity of Ae. aegypti in catholic churches could help to understand the dynamics of transmission of arboviruses in sites with high human aggregation.

Prevalence of Dyslipidemias in Three Regions in Venezuela: The VEMSOLS Study Results

PubMed Central

González-Rivas, Juan P.; Nieto-Martínez, Ramfis; Brajkovich, Imperia; Ugel, Eunice; Rísquez, Alejandro

2018-01-01

Background The prevalence of dyslipidemia in multiple regions of Venezuela is unknown. The Venezuelan Metabolic Syndrome, Obesity and Lifestyle Study (VEMSOLS) was undertaken to evaluate cardiometabolic risk factors in Venezuela. Objective To determine the prevalence of dyslipidemia in five populations from three regions of Venezuela. Methods During the years 2006 to 2010, 1320 subjects aged 20 years or older were selected by multistage stratified random sampling from all households in five municipalities from 3 regions of Venezuela: Lara State (Western region), Merida State (Andean region), and Capital District (Capital region). Anthropometric measurements and biochemical analysis were obtained from each participant. Dyslipidemia was defined according to the NCEP/ATPIII definitions. Results Mean age was 44.8 ± 0.39 years and 68.5% were females. The prevalence of lipids abnormalities related to the metabolic syndrome (low HDL-c [58.6%; 95% CI 54.9 - 62.1] and elevated triglycerides [39.7%; 36.1 - 43.2]) were the most prevalent lipid alterations, followed by atherogenic dyslipidemia (25.9%; 22.7 - 29.1), elevated LDL-c (23.3%; 20.2 - 26.4), hypercholesterolemia (22.2%; 19.2 - 25.2), and mix dyslipidemia (8.9%; 6.8 - 11.0). Dyslipidemia was more prevalent with increasing body mass index. Conclusion Dyslipidemias are prevalent cardiometabolic risk factors in Venezuela. Among these, a higher prevalence of low HDL is a condition also consistently reported in Latin America. PMID:29538522

Ancient xenocrystic zircon in young volcanic rocks of the southern Lesser Antilles island arc

NASA Astrophysics Data System (ADS)

Rojas-Agramonte, Yamirka; Williams, Ian S.; Arculus, Richard; Kröner, Alfred; García-Casco, Antonio; Lázaro, Concepción; Buhre, Stephan; Wong, Jean; Geng, Helen; Echeverría, Carlos Morales; Jeffries, Teresa; Xie, Hangqian; Mertz-Kraus, Regina

2017-10-01

The Lesser Antilles arc is one of the best global examples in which to examine the effects of the involvement of subducted sediment and crustal assimilation in the generation of arc crust. Most of the zircon recovered in our study of igneous and volcaniclastic rocks from Grenada and Carriacou (part of the Grenadines chain) is younger than 2 Ma. Within some late Paleogene to Neogene ( 34-0.2 Ma) lavas and volcaniclastic sediments however, there are Paleozoic to Paleoarchean ( 250-3469 Ma) xenocrysts, and Late Jurassic to Precambrian zircon ( 158-2667 Ma) are found in beach and river sands. The trace element characteristics of zircon clearly differentiate between different types of magmas generated in the southern Lesser Antilles through time. The zircon population from the younger arc (Miocene, 22-19 Ma, to Present) has minor negative Eu anomalies, well-defined positive Ce anomalies, and a marked enrichment in heavy rare earth elements (HREE), consistent with crystallization from very oxidized magmas in which Eu2 + was in low abundance. In contrast, zircon from the older arc (Eocene to mid-Oligocene, 30-28 Ma) has two different REE patterns: 1) slight enrichment in the light (L)REE, small to absent Ce anomalies, and negative Eu anomalies and 2) enriched High (H)REE, positive Ce anomalies and negative Eu anomalies (a similar pattern is observed in the xenocrystic zircon population). The combination of positive Ce and negative Eu anomalies in the zircon population of the older arc indicates crystallization from magmas that were variably, but considerably less oxidized than those of the younger arc. All the igneous zircon has positive εHf(t), reflecting derivation from a predominantly juvenile mantle source. However, the εHf(t) values vary significantly within samples, reflecting considerable Hf isotopic heterogeneity in the source. The presence of xenocrystic zircon in the southern Lesser Antilles is evidence for the assimilation of intra-arc crustal sediments and/or the recycling and incorporation of sediments into the magma sources in the mantle wedge. Most likely however, primitive magmas stalling and fractionating during their ascent through the Antilles crust entrained ancient zircon. This is evidence by the geochemistry of the study samples, which is inconsistent with any involvement of partially melted subducted sediment. Paleogeographic reconstructions show that the old zircon could derive from distant regions such as the Eastern Andean Cordillera of Colombia, the Merida Andes, and the northern Venezuela coastal ranges, transported for example by the Proto-Maracaibo River precursor of the Orinoco River.

Specklinia dunstervillei, a New Species Long Confused with Specklinia endotrachys (Orchidaceae: Pleurothallidinae)

PubMed Central

Karremans, Adam P.; Pupulin, Franco; Gravendeel, Barbara

2015-01-01

Specklinia dunstervillei is described as a new species in recognition of the distinctness of a Venezuelan species related to and confused with Specklinia endotrachys. It was illustrated for the first time by G. C. K. Dunsterville in 1963 from a plant collected in Trujillo on the Cordillera de Merida. The newly named species can be easily recognized by its small habit, short leaves and small reddish-orange flowers, the non-ascending dorsal sepal and the obtuse petals that are shortly apiculate. Specklinia dunstervillei is formally described and illustrated once again and compared morphologically and genetically with its closest relatives. PMID:26207634

Accumulated state of the Yukon River watershed: part I critical review of literature.

PubMed

Dubé, Monique G; Muldoon, Breda; Wilson, Julie; Maracle, Karonhiakta'tie Bryan

2013-07-01

A consistent methodology for assessing the accumulating effects of natural and manmade change on riverine systems has not been developed for a whole host of reasons including a lack of data, disagreement over core elements to consider, and complexity. Accumulated state assessments of aquatic systems is an integral component of watershed cumulative effects assessment. The Yukon River is the largest free flowing river in the world and is the fourth largest drainage basin in North America, draining 855,000 km(2) in Canada and the United States. Because of its remote location, it is considered pristine but little is known about its cumulative state. This review identified 7 "hot spot" areas in the Yukon River Basin including Lake Laberge, Yukon River at Dawson City, the Charley and Yukon River confluence, Porcupine and Yukon River confluence, Yukon River at the Dalton Highway Bridge, Tolovana River near Tolovana, and Tanana River at Fairbanks. Climate change, natural stressors, and anthropogenic stresses have resulted in accumulating changes including measurable levels of contaminants in surface waters and fish tissues, fish and human disease, changes in surface hydrology, as well as shifts in biogeochemical loads. This article is the first integrated accumulated state assessment for the Yukon River basin based on a literature review. It is the first part of a 2-part series. The second article (Dubé et al. 2013a, this issue) is a quantitative accumulated state assessment of the Yukon River Basin where hot spots and hot moments are assessed outside of a "normal" range of variability. Copyright © 2012 SETAC.

77 FR 22551 - Proposed Flood Elevation Determinations

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-16

... Tributary 5, Puyallup River (overflow through golf course between State Route 162 and Puyallup River... Waterway via numerous flow paths), Puyallup River (with consideration of levees), Puyallup River (without..., State, or regional entities. These proposed elevations are used to meet the floodplain management...

Fish tissue contamination in the mid-continental great rivers of the United States

EPA Science Inventory

The great rivers of the central United States (Upper Mississippi, Missouri and Ohio rivers) are significant economic and cultural resources, but their ecological condition is not well quantified. The Environmental Monitoring and Assessment Program for Great River Ecosystems (EMAP...

Persistent organic pollutants in fish tissue in the mid-continental great rivers of the United States

EPA Science Inventory

The great rivers of the central United States (Upper Mississippi, Missouri, and Ohio rivers) are significant economic and cultural resources, but their ecological condition is not well quantified. The Environmental Monitoring and Assessment Program for Great River Ecosystems (EMA...

77 FR 12493 - Revisions to the California State Implementation Plan, Feather River Air Quality Management District

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-01

... the California State Implementation Plan, Feather River Air Quality Management District AGENCY... limited disapproval of revisions to the Feather River Air Quality Management District (FRAQMD) portion of.... * * * * * (c) * * * (378) * * * (i) * * * (E) Feather River Air Quality Management District. (1) Rule 3.22...

Scaling properties reveal regulation of river flows in the Amazon through a forest reservoir

NASA Astrophysics Data System (ADS)

Salazar, Juan Fernando; Villegas, Juan Camilo; María Rendón, Angela; Rodríguez, Estiven; Hoyos, Isabel; Mercado-Bettín, Daniel; Poveda, Germán

2018-03-01

Many natural and social phenomena depend on river flow regimes that are being altered by global change. Understanding the mechanisms behind such alterations is crucial for predicting river flow regimes in a changing environment. Here we introduce a novel physical interpretation of the scaling properties of river flows and show that it leads to a parsimonious characterization of the flow regime of any river basin. This allows river basins to be classified as regulated or unregulated, and to identify a critical threshold between these states. We applied this framework to the Amazon river basin and found both states among its main tributaries. Then we introduce the forest reservoir hypothesis to describe the natural capacity of river basins to regulate river flows through land-atmosphere interactions (mainly precipitation recycling) that depend strongly on the presence of forests. A critical implication is that forest loss can force the Amazonian river basins from regulated to unregulated states. Our results provide theoretical and applied foundations for predicting hydrological impacts of global change, including the detection of early-warning signals for critical transitions in river basins.

An Evaluation of the Science Education Component of the Cross River State Science and Technical Education Project

ERIC Educational Resources Information Center

Ekuri, Emmanuel Etta

2012-01-01

The Cross River State Science and Technical Education Project was introduced in 1992 by edict number 9 of 20 December 1991, "Cross River State Science and Technical Education Board Edit, 20 December, 1991", with the aim of improving the quality of science teaching and learning in the state. As the success of the project depends…

Trench investigation along the Merida section of the Bocono fault (central Venezuelan Andes), Venezuela

USGS Publications Warehouse

Audemard, F.; Pantosti, D.; Machette, M.; Costa, C.; Okumura, K.; Cowan, H.; Diederix, H.; Ferrer, C.

1999-01-01

The Bocono fault is a major NE-SW-trending, dextral fault that extends for about 500 km along the backbone of the Venezuelan Andes. Several large historical earthquakes in this region have been attributed to the Bocono fault, and some of these have been recently associated with specific parts through paleoseismologic investigations. A new trench study has been performed, 60 km to the northeast of Merida in the central Venezuelan Andes, where the fault forms a releasing bend, comprising two conspicuous late Holocene fault strands that are about 1 km apart. The southern and northern strands carry about 70% and 30% (respectively) of the 7-10 mm/yr net slip rate measured in this sector, which is based on a 40 vs. 85-100 m right-lateral offset of the Late Pleistocene Los Zerpa moraines. A trench excavated on the northern strand of the fault (near Morros de los Hoyos, slightly northeast of Apartaderos) across a twin shutter ridge and related sag pond exposed two main fault zones cutting Late Pleistocene alluvial and Holocene peat deposits. Each zone forms a shutter ridge with peat deposits ponded against the uplifted block. The paleoearthquake reconstruction derived from this trench allow us to propose the occurrence of at least 6-8 earthquakes in the past 9000 yr, yielding a maximum average recurrence interval of about 1100-1500 yr. Based on the northern strands average slip rate (2.6 mm/yr), such as earthquake sequence should have accommodated about 23 m of slip since 9 ka, suggesting that the maximum slip per event ranges between 3 and 4 m. No direct evidence for the large 1812 earthquake has been found in the trench, although this earthquake may have ruptured this section of the fault. Further paleoseismic studies will investigate the possibility that this event occurred in the Bocono fault, but ruptured mainly its southern strand in this region.

The risk of Aedes aegypti breeding and premises condition in South Mexico.

PubMed

Manrique-Saide, Pablo; Davies, Clive R; Coleman, Paul G; Che-Mendoza, Azael; Dzul-Manzanilla, Felipe; Barrera-Pérez, Mario; Hernández-Betancourt, Silvia; Ayora-Talavera, Guadalupe; Pinkus-Rendón, Miguel; Burciaga-Zúñiga, Pierre; Sánchez Tejeda, Gustavo; Arredondo-Jiménez, Juan I

2013-12-01

A recent innovation instrumented for the Dengue Prevention and Control program in Mexico is the use of the premises condition index (PCI) as an indicator of risk for the vector Aedes aegypti infestation in dengue-endemic localities of Mexico. This paper addresses whether further improvements for the dengue control program could be made if the prevalence and productivity of Ae. aegypti populations could be reliably predicted using PCI at the household level, as well as medium-sized neighborhoods. We evaluated the use of PCI to predict the infestation with Aedes aegypti (breeding sites and immature productivity) in Merida, Mexico. The study consisted of a cross-sectional survey based on a cluster-randomized sampling design. We analyzed the statistical association between Aedes infestation and PCI, the extent to which the 3 components of PCI (house maintenance, and tidiness and shading of the patio) contributed to the association between PCI and infestation and whether infestation in a given premises was also affected by the PCI of the surrounding ones. Premises with the lowest PCI had significantly lower Aedes infestation and productivity; and as PCI scores increased infestation levels also tended to increase. Household PCI was significantly associated with Ae. aegypti breeding, largely due to the effect of patio untidiness and patio shade. The mean PCI within the surroundings premises also had a significant and independent explanatory power to predict the risk for infestation, in addition to individual PCI. This is the 1st study in Mexico showing evidence that premises condition as measured by the PCI is related to Ae. aegypti breeding sites and immature productivity. Results suggest that PCI could be used to streamline surveys to inform control efforts at least where Ae. aegypti breeds outdoors, as in Merida. The effect of individual premises, neighborhood condition, and the risk of Aedes infestation imply that the risk for dengue vector infestation can only be minimized by the mass effect at the community level.

European Virtual Atomic And Molecular Data Center - VAMDC

NASA Astrophysics Data System (ADS)

Dimitrijevic, M. S.; Sahal-Brechot, S.; Kovacevic, A.; Jevremovic, D.; Popovic, L. C.

2010-07-01

Reliable atomic and molecular data are of great importance for different applications in astrophysics, atmospheric physics, fusion, environmental sciences, combustion chemistry, and in industrial applications from plasmas and lasers to lighting. Currently, very important resources of such data are highly fragmented, presented in different, nonstandardized ways, available through a variety of highly specialized and often poorly documented interfaces, so that the full exploitation of all their scientific worth is limited, hindering research in many topics like e.g. the characterization of extrasolar planets, understanding the chemistry of our local solar system and of the wider universe, the study of the terrestrial atmosphere and quantification of climate change; the development of the fusion rersearch, etc. The Virtual Atomic and Molecular Data Centre (http://www.vamdc.eu, VAMDC) is an European Union funded FP7 project aiming to build a secure, documented, flexible and interoperable e-science environment-based interface to existing atomic and molecular data. It will also provide a forum for training potential users and dissemination of expertise worldwide. Partners in the Consortium of the Project are: 1) Centre National de Recherche Scientifique - CNRS (Paris, Reims, Grenoble, Bordeaux, Dijon, Toulouse); 2) The Chancellor, Masters and Scholars of the University of Cambridge - CMSUC; 3) University College London - UCL; 4) Open University - OU; (Milton Keynes, England); 5) Universitaet Wien - UNIVIE; 6) Uppsala Universitet - UU; 7) Universitaet zu Koeln - KOLN; 8) Istituto Nazionale di Astrofisica - INAF (Catania, Cagliari); 9) Queen's University Belfast - QUB; 10) Astronomska Opservatorija - AOB (Belgrade, Serbia); 11) Institute of Spectroscopy RAS - ISRAN (Troitsk, Russia); 12) Russian Federal Nuclear Center - All-Russian Institute of Technical Physics - RFNC-VNIITF (Snezhinsk, Chelyabinsk Region, Russia; 13) Institute of Atmospheric Optics - IAO (Tomsk, Russia); 14) Corporacion Parque tecnologico de Merida - IVIC (Merida, Venezuela); 15) Institute for Astronomy RAS - INASAN (Moscow, Russia). This review describes the VAMDC project and its objectives.

Metabolic syndrome in children and adolescents from Mérida city, Venezuela: Comparison of results using local and international reference values (CREDEFAR study).

PubMed

Villalobos Reyes, Marjorie; Mederico, Maracelly; Paoli de Valeri, Mariela; Briceño, Yajaira; Zerpa, Yajaira; Gómez-Pérez, Roald; Camacho, Nolis; Martínez, José Luis; Valeri, Lenín; Arata-Bellabarba, Gabriela

2014-11-01

To obtain local reference values for blood lipids and blood pressure (BP), and to determine the prevalence of metabolic syndrome (MS) in children and adolescents from Mérida, Venezuela, and to compare results using local and international cut-off values. The study enrolled 916 participants of both sexes aged 9-18 years of age from educational institutions. Demographic, anthropometric, and BP data were collected. Fasting blood glucose and lipid profile were measured. Percentile distribution of lipid and BP values was done by age group and sex. Prevalence of MS was estimated based on the NCEP-ATPIII classification (as modified by Cook et al.) and the classification of the International Diabetes Federation, using percentiles of Mérida and the USA as cut-off points. Agreement between both classifications was estimated using the kappa test (κ). Prevalence of MS was 2.2% by Cook-Merida percentiles, as compared to 1.8% by Cook-USA percentiles, a moderate agreement (κ=0.54). Agreement between Cook et al. and IDF using Merida percentiles was weak (κ=0.28). There was a higher frequency of abdominal obesity, hypertriglyceridemia and hypertension, and a lower frequency of low HDL-C using Mérida percentiles. The risk (odds ratio) of having MS is greater if abdominal obesity exists (OR: 98.63, CI: 22.45-433.35, p=0.0001). MS was significantly more common in obese subjects (18.3%, p=0.0001). Prevalence of MS in this sample of children and adolescents was 2.2%. Lipid and BP values were lower in Venezuelan as compared to US, European, and Asian children and adolescents, and similar to those in Latin-American references. Own reference values are required for accurate diagnosis of MS, as well as a worldwide consensus on its diagnostic criteria. Copyright © 2014 SEEN. Published by Elsevier Espana. All rights reserved.

ETHNICITY AND INCOME IMPACT ON BMI AND STATURE OF SCHOOL CHILDREN LIVING IN URBAN SOUTHERN MEXICO.

PubMed

Mendez, Nina; Barrera-Pérez, The Late Mario; Palma-Solis, Marco; Zavala-Castro, Jorge; Dickinson, Federico; Azcorra, Hugo; Prelip, Michael

2016-03-01

Obesity affects quality of life and increases the risk of morbidity and mortality. Mexico, a middle-income country, has a high prevalence of overweight and obesity among urban children. Merida is the most populated and growing city in southern Mexico with a mixed Mayan and non-Maya population. Local urbanization and access to industrialized foods have impacted the eating habits and physical activity of children, increasing the risk of overweight and obesity. This study aimed to contribute to the existing literature on the global prevalence of overweight and obesity and examined the association of parental income, ethnicity and nutritional status with body mass index (BMI) and height in primary school children in Merida. The heights and weights of 3243 children aged 6-12 from sixteen randomly selected schools in the city were collected between April and December 2012. Multinomial logistic regression models were used to examine differences in the prevalence of BMI and height categories (based on WHO reference values) by ethnicity and income levels. Of the total students, 1648 (50.9%) were overweight or obese. Stunting was found in 227 children (7%), while 755 (23.3%) were defined as having short stature. Combined stunting and overweight/obesity was found in 301 students (9.3%) and twelve (0.4%) were classified as stunted and of low weight. Having two Mayan surnames was inversely associated with having adequate height (OR=0.69, p<0.05) and the presence of two Maya surnames in children increased the odds of short stature and stunting. Children from lower income families had twice the odds of being stunted and obese. Overweight, obesity and short stature were frequent among the studied children. A significant proportion of Meridan children could face an increased risk of developing cardiovascular disease and its associated negative economic and social outcomes unless healthier habits are adopted. Action is needed to reduce the prevalence of obesity among southern Mexican families of all ethnic groups, particularly those of lower income.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gonsebatt, M.E.; Valle, M. del; Fourtoul, T.

Air pollution in the valley of Mexico is a risk to human health due to the high levels of ozone, acidic sulfates, nitrogen oxides, heavy metals and polycyclic aromatic hydrocarbons present. Epidemiologic studies have found an increase incidence of adverse respiratory symptoms among the residents of Mexico City. Histopathologic changes and DNA strand breaks have been observed in the nasal cells of residents of an area with high ozone levels. Since the nasal respiratory epithelium is directly exposed to air pollution we decided to investigate the frequency of MN in this tissue, in a group of 60 young adults (20-25more » years old) that live in Mexico City and to compare it with the frequency of MN observed in a similar group of 60 individuals living in Merida, an urban area of the Yucatan peninsula, with lower air pollution. Volunteers completed questionnaires to give information about their health status, smoking habits and previous exposure to confounding factors such as radiation. Nasal cells were obtained by gently scraping the inner turbinate. The cells were smeared on previously coded glass slides, fixed and then stained with Feulgen`s method. 6000 cells were scored for each individual. Results from the analysis of twenty nasal cell samples from Mexico City residents and thirteen samples from Merida residents do not show significant differences in MN prevalence, although Mexico City showed in average a 50% increase in the frequency of MN. The presence of MN was not associated to smoking in either group. Condensed, karyorrhetic and karyolitic nuclei predominated (p<0.05) among the cell samples from Mexico City residents. These changes occur as an response to cellular injury in normal nonkeratinizing epithelium or can be observed in cell undergoing necrosis following injury by agents that cause perturbation of the cellular environment. These preliminary results showed clear cytotoxic effects in the nasal respiratory epithelium of Mexico City residents.« less

House screening with insecticide-treated netting provides sustained reductions in domestic populations of Aedes aegypti in Merida, Mexico

PubMed Central

Che-Mendoza, Azael; Medina-Barreiro, Anuar; Koyoc-Cardeña, Edgar; Uc-Puc, Valentín; Contreras-Perera, Yamili; Herrera-Bojórquez, Josué; Dzul-Manzanilla, Felipe; Correa-Morales, Fabian; Ranson, Hilary; Lenhart, Audrey; McCall, Philip J.; Kroeger, Axel; Vazquez-Prokopec, Gonzalo

2018-01-01

Background There is a need for effective methods to control Aedes aegypti and prevent the transmission of dengue, chikungunya, yellow fever and Zika viruses. Insecticide treated screening (ITS) is a promising approach, particularly as it targets adult mosquitoes to reduce human-mosquito contact. Methodology/Principal findings A cluster-randomised controlled trial evaluated the entomological efficacy of ITS based intervention, which consisted of the installation of pyrethroid-impregnated long-lasting insecticide-treated netting material fixed as framed screens on external doors and windows. A total of 10 treatment and 10 control clusters (100 houses/cluster) were distributed throughout the city of Merida, Mexico. Cross-sectional entomological surveys quantified indoor adult mosquito infestation at baseline (pre-intervention) and throughout four post-intervention (PI) surveys spaced at 6-month intervals corresponding to dry/rainy seasons over two years (2012–2014). A total of 844 households from intervention clusters (86% coverage) were protected with ITS at the start of the trial. Significant reductions in the indoor presence and abundance of Ae. aegypti adults (OR = 0.48 and IRR = 0.45, P<0.05 respectively) and the indoor presence and abundance of Ae. aegypti female mosquitoes (OR = 0.47 and IRR = 0.44, P<0.05 respectively) were detected in intervention clusters compared to controls. This high level of protective effect was sustained for up to 24 months PI. Insecticidal activity of the ITS material declined with time, with ~70% mortality being demonstrated in susceptible mosquito cohorts up to 24 months after installation. Conclusions/Significance The strong and sustained entomological impact observed in this study demonstrates the potential of house screening as a feasible, alternative approach to a sustained long-term impact on household infestations of Ae. aegypti. Larger trials quantifying the effectiveness of ITS on epidemiological endpoints are warranted and therefore recommended. PMID:29543805

West Nile virus, Anopheles flavivirus, a novel flavivirus as well as Merida-like rhabdovirus Turkey in field-collected mosquitoes from Thrace and Anatolia.

PubMed

Öncü, Ceren; Brinkmann, Annika; Günay, Filiz; Kar, Sırrı; Öter, Kerem; Sarıkaya, Yasemen; Nitsche, Andreas; Linton, Yvonne-Marie; Alten, Bülent; Ergünay, Koray

2018-01-01

Mosquitoes are involved in the transmission and maintenance of several viral diseases with significant health impact. Biosurveillance efforts have also revealed insect-specific viruses, observed to cocirculate with pathogenic strains. This report describes the findings of flavivirus and rhabdovirus screening, performed in eastern Thrace and Aegean region of Anatolia during 2016, including and expanding on locations with previously-documented virus activity. A mosquito cohort of 1545 individuals comprising 14 species were collected and screened in 108 pools via generic and specific amplification and direct metagenomics by next generation sequencing. Seven mosquito pools (6.4%) were positive in the flavivirus screening. West Nile virus lineage 1 clade 1a sequences were characterized in a pool Culex pipiens sensu lato specimens, providing the initial virus detection in Aegean region following 2010 outbreak. In an Anopheles maculipennis sensu lato pool, sequences closely-related to Anopheles flaviviruses were obtained, with similarities to several African and Australian strains of this new insect-specific flavivirus clade. In pools comprising Uranotaenia unguiculata (n=3), Cx. pipiens s.l. (n=1) and Aedes caspius (n=1) mosquitoes, sequences of a novel flavivirus, distantly-related to Flavivirus AV2011, identified previously in Spain and Turkey, were characterized. Moreover, DNA forms of the novel flavivirus were detected in two Ur. unguiculata pools. These sequences were highly-similar to the sequences amplified from viral RNA, with undisrupted reading frames, suggest the occurrence of viral DNA forms in natural conditions within mosquito hosts. Rhabdovirus screening revealed sequences of a recently-described novel virus, named the Merida-like virus Turkey (MERDLVT) in 5 Cx. pipiens s.l. pools (4.6%). Partial L and N gene sequences of MERDLVT were well-conserved among strains, with evidence for geographical clustering in phylogenetic analyses. Metagenomics provided the near-full genomic sequence in a specimen, revealing an identical genome organization and limited divergence from the prototype MERDLVT isolate. Copyright © 2017 Elsevier B.V. All rights reserved.

Cosmic ray modulation with a Fisk-type heliospheric magnetic field and a latitude-dependent solar wind speed

NASA Astrophysics Data System (ADS)

Hitge, M.; Burger, R. A.

2010-01-01

The effect of a latitude-dependent solar wind speed on a Fisk heliospheric magnetic field [Fisk, L. A. Motion of the footpoints of heliospheric magnetic field lines at the Sun: implications for recurrent energetic particle events at high heliographic latitudes. J. Geophys. Res. 101, 15547-15553, 1996] was first discussed by Schwadron and Schwadron and McComas [Schwadron, N.A. An explanation for strongly underwound magnetic field in co-rotating rarefaction regions and its relationship to footpoint motion on the the sun. Geophys. Res. Lett. 29, 1-8, 2002. and Schwadron, N.A., McComas, D.J. Heliospheric “FALTS”: favored acceleration locations at the termination shock. Geophys. Res. Lett. 30, 41-1, 2003]. Burger and Sello [Burger, R.A., Sello, P.C. The effect on cosmic ray modulation of a Parker field modified by a latitudinal-dependent solar wind speed. Adv. Space Res. 35, 643-646, 2005] found a significant effect for a simplified 2D version of a latitude-dependent Fisk-type field while Miyake and Yanagita [Miyake, S., Yanagita, S. The effect of a modified Parker field on the modulation of the galactic cosmic rays. In: Proceedings of 30th International Cosmic Ray Conference. Merida, Mexico, vol. 1, 445-448, 2007] found a smaller effect. The current report improves on a previous attempt Hitge and Burger [Hitge, M., Burger, R.A. The effect of a latitude-dependent solar wind speed on cosmic-ray modulation in a Fisk-type heliospheric magnetic field. In: Proceedings of 30th International Cosmic Ray Conference. Merida, Mexico, vol. 1, pp. 449-450, 2007] where the global change in the solar wind speed and not the local speed gradient was emphasized. The sheared Fisk field of Schwadron and McComas [Schwadron, N.A., McComas, D.J. Heliospheric “FALTS”: Favored acceleration locations at the termination shock. Geophys. Res. Lett. 30, 41-1, 2003.) is similar to the current Schwadron-Parker hybrid field. Little difference is found between the effects of a Parker field and a Schwadron-Parker hybrid field on cosmic-ray modulation, in contrast to the results of Burger and Sello and Miyake and Yanagita [Burger, R.A., Sello, P.C. The effect on cosmic ray modulation of a Parker field modified by a latitudinal-dependent solar wind speed. Adv. Space Res. 35, 643-646, 2005 and Miyake, S., Yanagita, S. The effect of a modified Parker field on the modulation of the galactic cosmic rays. In: Proceedings of 30th International Cosmic Ray Conference. Merida, Mexico, vol. 1, pp. 445-448, 2007]. The two-dimensional approximation used by these authors is therefore inadequate to model the complexities of the actual three-dimensional field. We also show that a Fisk-type field with a latitude-dependent solar wind speed (Schwadron-Parker hybrid field) decreases both the relative amplitude of recurrent cosmic ray intensity variations and latitude gradients and yields similar constants of proportionality for these quantities as for the constant solar wind speed case.

78 FR 79434 - Sabine River Authority of Texas and Sabine River Authority, State of Louisiana; Notice of...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-30

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 2305-036] Sabine River Authority of Texas and Sabine River Authority, State of Louisiana; Notice of Availability of the Final Environmental Impact Statement for the Toledo Bend Hydroelectric Project In accordance with the National Environmental Policy Act of 1969 and the...

Lecturers' Perception of Research Activities for Knowledge Production in Universities in Cross River State, Nigeria

ERIC Educational Resources Information Center

Uchendu, C. C.; Osim, R. O.; Odigwe, F. N.; Alade, F. N.

2014-01-01

This study examined lecturers' perception of research activities for knowledge production in universities in Cross River State, Nigeria. Two hypotheses were isolated to give direction to this investigation. 240 university lecturers were sampled from a population of 1,868 from the two universities in Cross River State, using stratified random…

Dynamic reorganization of river basins.

PubMed

Willett, Sean D; McCoy, Scott W; Perron, J Taylor; Goren, Liran; Chen, Chia-Yu

2014-03-07

River networks evolve as migrating drainage divides reshape river basins and change network topology by capture of river channels. We demonstrate that a characteristic metric of river network geometry gauges the horizontal motion of drainage divides. Assessing this metric throughout a landscape maps the dynamic states of entire river networks, revealing diverse conditions: Drainage divides in the Loess Plateau of China appear stationary; the young topography of Taiwan has migrating divides driving adjustment of major basins; and rivers draining the ancient landscape of the southeastern United States are reorganizing in response to escarpment retreat and coastal advance. The ability to measure the dynamic reorganization of river basins presents opportunities to examine landscape-scale interactions among tectonics, erosion, and ecology.

Scaling up watershed model parameters - flow and load simulations of the Edisto River basin

Treesearch

Toby Feaster; Stephen Benedict; Jimmy Clark; Paul Bradley; Paul Conrads

2016-01-01

The Edisto River is the longest and largest river system completely contained in South Carolina and is one of the longest free flowing blackwater rivers in the United States. The Edisto River basin also has fish-tissue mercury concentrations that are among the highest recorded in the United States. As part of an ongoing effort by the U.S. Geological Survey to expand...

Student Travel to Pan-Am Congress of Plants & Biofuels in Merida, Mexico

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kimberly, Kimnach

The Pan American Congress on Plants and BioEnergy convened in Mérida, Mexico, June 22 to 25, 2008. The program was organized by Steve Long (University of Illinois) and Nick Carpita (Purdue University), along with co-organizers Marcos Buckeridge (University of São Paulo, Brazil) and Federico Sánchez (Universidad Nacional Autónoma de México). More than 200 scientists from over a dozen nations around the world gathered to discuss key issues surrounding the development of biofuel feedstocks and to report on their research in this area. This three day conference had invited speakers surrounding developing renewable and sustainable energy resources which are typically propelledmore » by three important drivers – security, cost and environmental impact.« less

Teachers' Level of Awareness of 21st Century Occupational Roles in Rivers State Secondary Schools

ERIC Educational Resources Information Center

Uche, Chineze M.; Kaegon, Leesi E. S. P.; Okata, Fanny Chiemezie

2016-01-01

This study investigated the teachers' level of awareness of 21st century occupational roles in Rivers state secondary schools. Three research questions and three hypotheses guided the study. The population of study comprised of 247 public secondary schools and 57 private secondary schools in Port Harcourt metropolis of Rivers state which gave a…

Occupational Stress and Management Strategies of Secondary School Principals in Cross River State, Nigeria

ERIC Educational Resources Information Center

Anyanwu, Joy; Ezenwaji, Ifeyinwa; Okenjom, Godian; Enyi, Chinwe

2015-01-01

The study aimed at finding out sources and symptoms of occupational stress and management strategies of principals in secondary schools in Cross River State, Nigeria. Descriptive survey research design was adopted for the study with a population of 420 principals (304 males and 116 females) in secondary schools in Cross River State, Nigeria. Three…

Crayfish fauna of the Tennessee River drainage in Mississippi, including new state species records

Treesearch

Susan B. Adams; Christopher A. Taylor; Chris Lukhaup

2010-01-01

We present new state records for 3 crayfish species in the Tennessee River basin in Mississippi, and the first drainage-specific distributional information in the state for a fourth. The species - Cambarus girardianus, Cambarus rusticiformis, Orconectes spinosus, and Orconectes wright, - are all known from the Tennessee River basin in Tennessee, while all but O....

Influence of urban area on the water quality of the Campo River basin, Paraná State, Brazil.

PubMed

Carvalho, K Q; Lima, S B; Passig, F H; Gusmão, L K; Souza, D C; Kreutz, C; Belini, A D; Arantes, E J

2015-12-01

The Campo River basin is located on the third plateau of the Paraná State or trap plateau of Paraná, at the middle portion between the rivers Ivaí and Piquiri, southern Brazil, between the coordinates 23° 53 and 24° 10' South Latitude and 52° 15' and 52° 31' West Longitude. The basin has 384 Km² area, being 247 km² in the municipality of Campo Mourão and 137 km² in the municipality of Peabiru, in Paraná State. The Campo River is a left bank tributary of the Mourão River, which flows into the Ivaí River. The objective of this study was to monitor water quality in the Km 119 River and the Campo River, tributaries of the Mourão River, with monthly collection of water samples to determine pH, temperature, turbidity, biochemical oxygen demand, dissolved oxygen, fecal coliforms, total solids, total nitrogen, ammoniacal nitrogen, nitrite, nitrate and total phosphorus. The results obtained were compared with the indices established by the environmental legislation and applied in the determination of the Water Quality Index (WQI) used by the Water Institute of Paraná State, regulating environmental agency. Poor water quality in these rivers presents a worrying scenario for the region, since this river is the main source of water supply for the public system. Results of organic matter, fecal coliforms and total phosphorus were higher than the limits established by Resolution CONAMA 357/2005 to river class 2, specially at downstream of the Km 119 River and the Campo River, due to the significant influence of the urban anthropic activity by the lack of tertiary treatment and also rural by the lack of basic sanitation in this area. Results of WQI of Km 119 River and do Campo River indicated that water quality can be classified as average in 71% and good in 29% of the sites evaluated.

Setting Preferences of High and Low Use River Recreationists: How Different are They?

NASA Astrophysics Data System (ADS)

Kainzinger, Silvia; Arnberger, Arne; Burns, Robert C.

2016-11-01

Whitewater boaters often choose a river based on their preferences for attributes important for their trip experience. This study explored whether preferences and tradeoffs of whitewater boaters for social, resource, and managerial attributes of riverscapes differ among a high and a low use river in the United States by employing a stated choice approach. River trip scenarios were displayed using verbal descriptions and computer-generated photographs. Results indicate that use levels were more important for boaters on the low use river, whereas river difficulty and river access fee was of higher importance for the high use river boaters, who are more involved in this whitewater activity. Preferences for waiting times and trip length did not differ between the samples. Findings suggest that whitewater boaters of high and low use rivers have a different tradeoff behavior among river setting attributes, which has implications for river recreation management.

Youth Empowerment in Higher Education for Sustainable Development of Developing Communities in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ekpiken, William E.; Ukpabio, Godfrey U.

2015-01-01

This paper was an attempt to examine youth empowerment in higher education for sustainable development of developing communities in Cross River State in Nigeria. In Cross River State developing communities, youths are in the majority and form a very strong formidable force in the society we live, study, but are not empowered while in school nor…

Achievement of Abraham Maslow's Needs Hierarchy Theory among Teachers: Implications for Human Resource Management in the Secondary School System in Rivers State

ERIC Educational Resources Information Center

Adiele, E.E.; Abraham, Nath. M.

2013-01-01

The study investigated the achievement of Abraham Maslow's need hierarchy theory among secondary school teachers in Rivers State. A 25-item questionnaire was designed, validated and administered on a sample of 500 teachers drawn from 245 secondary schools in Rivers State. The result revealed that secondary school teachers indicated insignificant…

Changes in chemical quality of the Arkansas River in Oklahoma and Arkansas (1946-52)

USGS Publications Warehouse

Dover, T.B.; Geurin, J.W.

1953-01-01

Systematic chemical quality-of-water investigations have been carried on in both Oklahoma and Arkansas by the Geological Survey in cooperation with State and Federal agencies during the past several years. Results of the Survey's quality-of-water investigations are usually published in the annual Water-Supply Papers. However, as the Geological Survey has made no sediment investigations in the Arkansas River Basin in Oklahoma and Arkansas, the published data do not include information on sediment concentrations or loads. This report attempts to summarize information collected to date in the Arkansas River Basin of the two States, and to show as clearly as possible from present information how the chemical quality of water in the Arkansas River changes downstream from the Oklahoma-Kansas State line to its confluence with the Mississippi River, and how it is affected by tributary inflows. Additional information is being collected and further studies are planned. Hence, the conclusions reached herein may be modified by more adequate information at a later date. The Arkansas River enters Oklahoma near Newkirk on the northern boundary just east of the 97th meridian, crosses the State in a general southeasterly direction flowing past Tulsa, enters Arkansas at its western boundary north of the 35th parallel near Fort Smith, still flowing in a general southeasterly direction past Little Rock near the center of the State, and empties into the Mississippi River east of Dumas. The Arkansas River is subject to many types of pollution downstream from the Oklahoma-Kansas State line, and its inferior quality along with an erratic flow pattern has caused it to be largely abandoned as a source of municipal and industrial water supply. At the present time, the Arkansas River is not directly used as a source of public supply in any part of the basin in either Oklahoma or Arkansas. In general, the river water increases in chemical concentration downstream from the Oklahoma-Kansas State line to Tulsa, due mainly to tributary inflow from the Salt Fork Arkansas River and the Cimarron River, both streams being sources of large amounts of both natural and artificial pollution. A decrease in chemical concentration is noted downstream from Tulsa due to tributary inflow from the Verdigris, Neosho, and Illinois rivers with an increase in chemical concentration then noted due to tributary inflow from the Canadian River which is largely artificial pollution. A steady decrease in concentration is then noted as the river progresses through Arkansas to the Mississippi River, as all major tributaries below the Canadian River have a dilution effect upon the chemical concentration of the Arkansas River water. Proposals for storage and regulating reservoirs on the Arkansas River in both Oklahoma and Arkansas have been made by the Corps of Engineers and others. Additional proposals are being considered in the present Arkansas-White-Red River Basin Inter-Agency Committee studies. If constructed, these reservoirs will provide an opportunity for control of flow and beneficial use of Arkansas River water, both at and downstream from these sites. Impoundment alone will greatly reduce the extremes in water quality, and by reasonable control of municipal and industrial wastes, the water would be comparable in quality to many existing basin municipal and industrial supplies. (available as photostat copy only)

78 FR 30870 - Nomination of Existing Marine Protected Areas to the National System of Marine Protected Areas

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-23

... Reserve Big Flat State Marine Conservation Area Big River Estuary State Marine Conservation Area Bird Rock... Conservation Area Navarro River Estuary State Marine Conservation Area Painted Cave (Santa Cruz Island) State... Marine Conservation Area Ten Mile Estuary State Marine Conservation Area Ten Mile State Marine Reserve...

Abundance and reproduction of toads (Bufo) along a regulated river in the southwestern United States: Importance of flooding in riparian ecosystems

Treesearch

H. L. Bateman; M. J. Harner; A. Chung-MacCoubrey

2008-01-01

Abundance and size of toads (Bufo woodhousii and B. cognatus) were related to precipitation, river flow, and groundwater over 7 years along the Middle Rio Grande, a regulated river in the semi-arid southwestern United States. Toads were monitored in riparian areas at 12 sites spanning 140 km of river during summers 2000­2006....

76 FR 76115 - Revisions to the California State Implementation Plan, Feather River Air Quality Management District

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-06

... the California State Implementation Plan, Feather River Air Quality Management District AGENCY... limited disapproval of revisions to the Feather River Air Quality Management District (FRAQMD) portion of..., Regulatory Planning and Review The Office of Management and Budget (OMB) has exempted this regulatory action...

EPA New England Trains 30 Federal and State Environmental Workers on the National Rivers and Streams Assessment

EPA Pesticide Factsheets

The USEPA held a four-day training session last week at the EPA Chelmsford Laboratory for approximately 30 state & federal workers participating in the EPA National Rivers & Streams Assessment, the 3rd nationwide survey of the condition of rivers & streams

Conservation status of Colorado River cutthroat trout

Treesearch

Michael K. Young; R. Nick Schmal; Thomas W. Kohley; Victoria G. Leonard

1996-01-01

Though biologists recognize that populations of Colorado River cutthroat trout have declined, the magnitude of the loss remains unquantified. We obtained information from state and federal biologists and from state databases to determine the current distribution and status of populations of Colorado River cutthroat trout. Recent population extinctions have been...

Variability of Ecosystem State in Rivers Containing Natural Dams: A Chemical Analysis

NASA Astrophysics Data System (ADS)

Reynolds, Z. A.

2015-12-01

Flooding, and the resulting economic damage to roads and property, is associated with natural dams such as beaver dams or log jams. For this reason, humans often remove natural dams; however, river reaches with natural dams provide very different ecosystem services in comparison with free-flowing river reaches. Therefore, the goal of this project is to assess the differences in ecosystem state between these different river reach types in the northeastern United States. We focused on differences in basic chemistry (e.g., dissolved oxygen, pH, temperature, and organic carbon) to assess the impact of natural dams on river ecosystem state. Study sites include rivers in the White Mountains and southeastern New Hampshire at locations with beaver dams, beaver ponds, beaver meadows, log jams, and free-flowing reaches. Dissolved oxygen, ORP, pH, temperature, and conductivity were measured in the field with a YSI Professional Plus meter. Water samples were collected for subsequent laboratory analysis of total organic carbon with a Shimadzu TOC-L. Preliminary results show that the chemistry of river water varies with feature type. Most significantly, dissolved oxygen concentrations are highest in free-flowing reaches and lowest in beaver ponds. Although beaver ponds are often associated with lower pH, due the increased concentration of organic acids, some beaver ponds can increase pH when compared to free-flowing reaches on the same river. Early results also show that water chemistry returns quickly to the chemistry typical of the free-flowing river reaches after being altered by a natural dam. Overall, natural dams create a river system that has more heterogeneity, and therefore has opportunities to provide more ecosystem functions, than a purely free-flowing river; this can increase the number of supported instream and riparian species. By increasing the understanding of how natural dams affect the chemistry of river water, river engineers can improve their decisions on how to remove problematic natural dams that increase flooding risks; they can also investigate possibilities to mimic the ecosystem state generated by natural dams in places where these dams are regularly removed.

Peak streamflows and runoff volumes for the Central United States, February through September, 2011: Chapter C in 2011 floods of the central United States

USGS Publications Warehouse

Holmes, Robert R.; Wiche, Gregg J.; Koenig, Todd A.; Sando, Steven K.

2013-01-01

During 2011, excessive precipitation resulted in widespread flooding in the Central United States with 33 fatalities and approximately $4.2 billion in damages reported in the Souris/Red River of the North (Souris/Red) and Mississippi River Basins. At different times, beginning in late February 2011 and extending through September 2011, various rivers in these basins had major flooding, with some locations receiving multiple rounds of flooding. Peak streamflow records were broken at 105 streamgages in the Souris/Red and Mississippi River Basins and annual runoff volume records set at 47 of the 211 streamgages analyzed for annual runoff. For the period of 1950 through 2011, the Ohio River provided almost one-half of the annual runoff at Vicksburg; the Missouri River contributed less than one-fourth, and the lower Mississippi River less than one-fourth. Those relative contribution patterns also occurred in 1973 and 2011, with the notable exception of the decrease in contribution of the lower Mississippi River tributaries and the increase in contribution from the upper Missouri River Basin in 2011 as compared to 1973 and the long-term average from 1950 to 2011.

Reach-scale characterization of large woody debris in a low-gradient, Midwestern U.S.A. river system

NASA Astrophysics Data System (ADS)

Martin, Derek J.; Pavlowsky, Robert T.; Harden, Carol P.

2016-06-01

Addition of large woody debris (LWD) to rivers has increasingly become a popular stream restoration strategy, particularly in river systems of the Midwestern United States. However, our knowledge of LWD dynamics is mostly limited to high gradient montane river systems, or coastal river systems. The LWD-related management of low-gradient, Midwestern river systems is thus largely based on higher gradient analogs of LWD dynamics. This research characterizes fluvial wood loads and investigates the relationships between fluvial wood, channel morphology, and sediment deposition in a relatively low-gradient, semiconfined, alluvial river. The LWD and channel morphology were surveyed at nine reaches along the Big River in southeastern Missouri to investigate those relationships in comparison to other regions. Wood loads in the Big River are low (3-114 m3/100 m) relative to those of higher gradient river systems of the Pacific Northwest, but high relative to lower-gradient river systems of the Eastern United States. Wood characteristics such as size and orientation suggest that the dominant LWD recruitment mechanism in the Big River is bank erosion. Also, ratios of wood geometry to channel geometry show that the Big River maintains a relatively high wood transport capacity for most of its length. Although LWD creates sites for sediment storage, the overall impact on reach-scale sediment storage in the Big River is low (< 4.2% of total in-channel storage). However, wood loads, and thus opportunities for sediment storage, have the potential to grow in the future as Midwestern riparian forests mature. This study represents the first of its kind within this particular type of river system and within this region and thus serves as a basis for understanding fluvial wood dynamics in low-gradient river systems of the Midwestern United States.

Spatio-temporal variations in age structures of a partially re-established population of northern river otters (Lontra canadensis)

USGS Publications Warehouse

Barrett, Dominic A.; Leslie, David M.

2012-01-01

Examination of age structures and sex ratios is useful in the management of northern river otters (Lontra canadensis) and other furbearers. Reintroductions and subsequent recolonizations of river otters have been well documented, but changes in demographics between expanding and established populations have not been observed. As a result of reintroduction efforts, immigration from Arkansas and northeastern Texas, and other efforts, river otters have become partially reestablished throughout eastern and central Oklahoma. Our objective was to examine age structures of river otters in Oklahoma and identify trends that relate to space (watersheds, county) and time (USDA Animal and Plant Health Inspection Service county trapping records). We predicted that river otters in western areas of the state were younger than river otters occurring farther east. From 2005–2007, we obtained salvaged river otter carcasses from federal and state agencies, and we live-captured other river otters using leg hold traps. Seventy-two river otters were sampled. Overall, sex ratios were skewed toward females (1F∶0.8M), but they did not differ among spatiotemporal scales examined. Teeth were removed from salvaged and live-captured river otters (n  =  63) for aging. One-year old river otters represented the largest age class (30.2%). Proportion of juveniles (<1 y old) in Oklahoma (19.0%) was less than other states. Mean age of river otters decreased from east-to-west in the Arkansas River and its tributaries. Mean age of river otters differed between the Canadian River Watershed (0.8 y) and the Arkansas River Watershed (2.9 y) and the Canadian River Watershed and the Red River Watershed (2.4 y). Proportion of juveniles did not differ among spatiotemporal scales examined. Similar to age structure variations in other mammalian carnivores, colonizing or growing western populations of river otters in Oklahoma contained younger ages than more established eastern populations.

37. BRIDGE 115, SMITH RIVER MIDDLE FORK OREGON STATE HIGHWAY ...

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

37. BRIDGE 1-15, SMITH RIVER MIDDLE FORK OREGON STATE HIGHWAY 199. JOSEPHINE COUNTY, OREGON. LOOKING SSW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

40. CAVEMAN BRIDGE, ROGUE RIVER, OREGON STATE HIGHWAY 199. GRANTS ...

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

40. CAVEMAN BRIDGE, ROGUE RIVER, OREGON STATE HIGHWAY 199. GRANTS PASS, JOSEPHINE COUNTY, OREGON. LOOKING S. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

39. CAVEMAN BRIDGE, ROGUE RIVER, OREGON STATE HIGHWAY 199. GRANTS ...

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

39. CAVEMAN BRIDGE, ROGUE RIVER, OREGON STATE HIGHWAY 199. GRANTS PASS, JOSEPHINE COUNTY, OREGON. LOOKING SW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

6. BRIDGE LOOKING SOUTH FROM CROWN POINT STATE PARK SHOWING ...

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

6. BRIDGE LOOKING SOUTH FROM CROWN POINT STATE PARK SHOWING SURROUNDING DEVELOPMENT FROM CONSTRUCTION OF DAM - Columbia River Bridge at Grand Coulee Dam, Spanning Columbia River at State Route 155, Coulee Dam, Okanogan County, WA

Phytophthora Species in Rivers and Streams of the Southwestern United States

PubMed Central

Stamler, Rio A.; Sanogo, Soumalia; Goldberg, Natalie P.

2016-01-01

ABSTRACT Phytophthora species were isolated from rivers and streams in the southwestern United States by leaf baiting and identified by sequence analysis of internal transcribed spacer (ITS) ribosomal DNA (rDNA). The major waterways examined included the Rio Grande River, Gila River, Colorado River, and San Juan River. The most prevalent species identified in rivers and streams were Phytophthora lacustris and P. riparia, both members of Phytophthora ITS clade 6. P. gonapodyides, P. cinnamomi, and an uncharacterized Phytophthora species in clade 9 were also recovered. In addition, six isolates recovered from the Rio Grande River were shown to be hybrids of P. lacustris × P. riparia. Pathogenicity assays using P. riparia and P. lacustris failed to produce any disease symptoms on commonly grown crops in the southwestern United States. Inoculation of Capsicum annuum with P. riparia was shown to inhibit disease symptom development when subsequently challenged with P. capsici, a pathogenic Phytophthora species. IMPORTANCE Many Phytophthora species are significant plant pathogens causing disease on a large variety of crops worldwide. Closer examinations of streams, rivers, and forest soils have also identified numerous Phytophthora species that do not appear to be phytopathogens and likely act as early saprophytes in aquatic and saturated environments. To date, the Phytophthora species composition in rivers and streams of the southwestern United States has not been evaluated. This article details a study to determine the identity and prevalence of Phytophthora species in rivers and streams located in New Mexico, Arizona, Colorado, Utah, and Texas. Isolated species were evaluated for pathogenicity on crop plants and for their potential to act as biological control agents. PMID:27235435

SURVEY OF THE NATION'S NON-WADEABLE STREAMS AND RIVERS

EPA Science Inventory

The U.S. EPA is engaging states, tribes and other parties in designing a national survey to assess the condition of non-wadeable rivers and streams. The river survey is one of a series of surveys beng implemented as a partnership among states, tribes and U.S. EPA, with the colla...

U.S. EPA'S SURVEY OF THE NATION'S NON-WADEABLE STREAMS AND RIVERS

EPA Science Inventory

The U.S. EPA is engaging states, tribes and other parties in designing a national survey to assess the condition of non-wadeable rivers and streams. The rivers survey is one of a series of surveys being implemented as a partnership among states, tribes and U.S. EPA, with the coll...

An assessment of stressor extent and biological condition in the North American mid-continent great rivers (USA)

USGS Publications Warehouse

Angradi, Ted R.; Bolgriend, David W.; Jicha, Terri M.; Pearson, Mark S.; Taylor, Debra L.; Moffett, Mary F.; Blocksom, Karen A.; Walters, David M.; Elonen, Colleen M.; Anderson, Leroy E.; Lazorchak, James M.; Reavie, Euan D.; Kireta, Amy R.; Hill, Brian H.

2011-01-01

We assessed the North American mid-continent great rivers (Upper Mississippi, Missouri, and Ohio). We estimated the extent of each river in most- (MDC) or least-disturbed condition (LDC) based on multiple biological response indicators: fish and macroinvertebrate, trophic state based on chlorophyll a, macrophyte cover, and exposure of fish-eating wildlife to toxic contaminants in fish tissue (Hg, total chlordane, total DDT, PCBs). We estimated the extent of stressors on each river including nutrients, suspended solids, sediment toxicity, invasive species, and land use (agriculture and impervious surface). All three rivers had a greater percent of their river length in MDC than in LDC based on fish assemblages. The Upper Mississippi River had the greatest percent of river length with eutrophic status. The Ohio River had the greatest percent of river length with fish with tissue contaminant levels toxic to wildlife. Overall, condition indices based on fish assemblages were more sensitive to stress than macroinvertebrate indices. Compared to the streams in its basin, more of the Upper Mississippi and Missouri Rivers were in MDC for nutrients than the Ohio River. Invasive species (Asian carp and Dreissenid mussels) were less widespread and less abundant on the Missouri River than on the other great rivers. The Ohio River had the most urbanized floodplains (greatest percent impervious surface). The Missouri River had the most floodplain agriculture. The effect of large urban areas on river condition was apparent for several indicators. Ecosystem condition based in fish assemblages, trophic state, and fish tissue contamination was related to land use on the floodplain and at the subcatchment scale. This is the first unbiased bioassessment of the mid-continent great rivers in the United States. The indicators, condition thresholds, results, and recommendations from this program are a starting point for improved future great river assessments.

The ecohealth assessment and ecological restoration division of urban water system in Beijing

USGS Publications Warehouse

Liu, J.; Ma, M.; Zhang, F.; Yang, Z.; Domagalski, Joseph L.

2009-01-01

Evaluating six main rivers and six lakes in Beihuan water system (BWS) and diagnosing the limiting factors of eco-health were conducted for the ecohealth assessment and ecological restoration division of urban water system (UWS) for Beijing. The results indicated that Jingmi River and Nanchang River were in a healthy state, the degree of membership to unhealthy were 0.358, 0.392, respectively; while Yongding River, Beihucheng River, Liangma River, Tongzi River and six lakes were in an unhealthy state, their degree of membership to unhealthy were between 0.459 and 0.927. The order of that was Liangma > Beihucheng > Tongzi > Yongding > six lakes > Jingmi > Nanchang, in which Liangma Rivers of that was over 0.8. The problems of Rivers and lakes in BWS are different. Jingmi River and Nanchang River were ecotype limiting; Yongding River, Tongzi River and six lakes were water quality and ecotype limiting. Beihucheng River and Liangma River were water quantity, water quality and ecotype limiting. BWS could be divided into 3 restoration divisions, pollution control division including Yongding River, Tongzi River and six lakes; Jingmi River and Nanchang River were ecological restoration zone, while Beihucheng River and Liangma River were in comprehensive improvement zone. Restoration potentiality of Jingmi River and Nanchang River were higher, and Liangma River was hardest to restore. The results suggest a new idea to evaluate the impact of human and environmental factors on UWS. ?? Springer Science+Business Media, LLC 2009.

General weather conditions and precipitation contributing to the 2011 flooding in the Mississippi River and Red River of the North Basins, December 2010 through July 2011: Chapter B in 2011 floods of the central United States

USGS Publications Warehouse

Vining, Kevin C.; Chase, Katherine J.; Loss, Gina R.

2013-01-01

Excessive precipitation produced severe flooding in the Mississippi River and Red River of the North Basins during spring and summer 2011. The 2011 flooding was caused by weather conditions that were affected in part by a La Niña climate pattern. During the 2010–11 climatological winter (December 2010–February 2011), several low pressure troughs from the Rocky Mountains into the Ohio River subbasin produced large amounts of precipitation. Precipitation was above normal to record amounts in parts of the Missouri River, Red River of the North, and upper Mississippi River subbasins, and mostly normal to below normal in the Ohio River and lower Mississippi River subbasins. During the 2011 climatological spring (March–May 2011), a large low pressure trough over the continental States and a high pressure ridge centered in the vicinity of the Gulf of Mexico combined to produce storms with copious precipitation along frontal boundaries across the Central States. Rain totals recorded during the April 18–28, 2011, precipitation event were more than 8 inches at several locations, while an impressive total of 16.15 inches was recorded at Cape Girardeau, Missouri. Several locations in the Missouri River subbasin had rainfall totals that were nearly one-third to one-half of their 1971–2000 normal annual amounts during a May 16–31, 2011, precipitation event. During June and July, thunderstorm development along frontal boundaries resulted in areas of heavy rain across the Missouri River, Red River of the North, and upper Mississippi River subbasins, while rainfall in the lower Mississippi River subbasin was mostly below normal.

ALWAYS A RIVER - SUPPLEMENTAL ENVIRONMENTAL EDUCATION CURRICULUM ON THE OHIO RIVER AND WATER GRADES K - 12

EPA Science Inventory

This curriculum was developed as a significant component of the project, Always a River: The Ohio River and the American Experience, a six-state collaboration devoted to exploring the historical and cultural development of the Ohio River. The Always a River project is being joint...

4. SNAKE RIVER VALLEY IRRIGATION DISTRICT, PHOTOGRAPHIC COPY OF DRAWING, ...

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

4. SNAKE RIVER VALLEY IRRIGATION DISTRICT, PHOTOGRAPHIC COPY OF DRAWING, PROPOSED SECTION OF DIVERSION DAM ACROSS SNAKE RIVER, SHEET 1 OF 5, 1924 (on file at the Idaho State Office of Water Resources, Boise, Idaho) - Snake River Valley Irrigation District, East Side of Snake River (River Mile 796), Shelley, Bingham County, ID

Biological and ecological science for Wisconsin—A Great Lakes and Rivers State

USGS Publications Warehouse

,

2018-03-06

Wisconsin and natural resources go hand-in-hand. Tourism, which generates $19 billion annually and sustains about 200,000 jobs, depends on an abundance of lakes, rivers, shorelines, and woodlands for fishing, hunting, boating, and other outdoor recreation. Rivers and floodplains in the Upper Mississippi Basin, including the Mississippi River, are part of a five-State corridor that generates more than $300 billion annually and sustains millions of manufacturing, tourism, transportation, and agricultural jobs. Wisconsin also is a Great Lakes State with more than 800 miles of shoreline, and the fisheries of lakes Superior and Michigan deliver $185 million annually and provide thousands of jobs.

A survey of whitewater recreation impacts along five West Virginia rivers

USGS Publications Warehouse

Leung, Y.-F.; Marion, J.L.

1998-01-01

Results are reported from an assessment of whitewater river recreation impacts at river accesses and recreation sites along five West Virginia rivers: the New, Gauley, Cheat, Tygart, and Shenandoah. Procedures were developed and applied to assess resource conditions on 24 river access roads, 68 river accesses, and 151 recreation sites. The majority of river accesses and recreation sites are located on the New and Gauley rivers, which account for most of the state?s whitewater recreation use. Site conditions are variable. While some river accesses and sites are situated on resistant rocky substrates, many are poorly designed and/or located on erodible soil and sand substrates. Recreation site sizes and other areal measures of site disturbance are quite large, coincident with the large group sizes associated with commercially outfitted whitewater rafting trips. Recommendations are offered for managing river accesses and sites and whitewater visitation and the selection of indicators and standards as part of a Limits of Acceptable Change management process. Procedures and recommendations for continued visitor impact monitoring are also offered.

Establishing Consistent Fish Sampling Methods for Biological Assessments on Inter-state Great Rivers: A Case Study on the Upper Mississippi River.

EPA Science Inventory

The use of Indices of Biotic Integrity (IBI) to assess aquatic waters has become an acceptable practice for many Clean Water Act (CWA) agencies. For states that share waters such as Minnesota and Wisconsin along the Mississippi River, the states’ respective IBIs may show vastly d...

Low Frequencies of Interference to EPA Quantitative Polymerase Chain Reaction (qPCR) Methods for Microbial Water Quality Monitoring in U.S. Rivers and Streams and Coastal Waters

EPA Science Inventory

In collaboration with U.S States and Tribes, the United States Environmental Protection Agency (EPA) conducts periodic and rotating, statistically based surveys of U.S. rivers and streams (National Rivers and Streams Assessment, NRSA), estuarine and Great Lakes nearshore coastal ...

33 CFR 125.53 - Requirements for credentials; certain vessels operating on navigable waters of the United States...

Code of Federal Regulations, 2010 CFR

2010-07-01

... Rivers). 125.53 Section 125.53 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... navigable waters of the United States (including the Great Lakes and Western Rivers). (a) Every person... Rivers. (2) Harbor craft, such as water taxis, junk boats, garbage disposal boats, bum boats, supply...

76 FR 22033 - Safety Zone; Red River Safety Zone, Red River, MN

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-20

...-AAOO Safety Zone; Red River Safety Zone, Red River, MN AGENCY: Coast Guard, DHS. ACTION: Temporary... a temporary safety zone on the Red River, MN. This safety zone is being established to ensure the... Red River in the State of Minnesota north of a line drawn across latitude 46[deg]20'00'' N, including...

3. SNAKE RIVER VALLEY IRRIGATION DISTRICT, PHOTOGRAPHIC COPY OF DRAWING, ...

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

3. SNAKE RIVER VALLEY IRRIGATION DISTRICT, PHOTOGRAPHIC COPY OF DRAWING, PROFILE AND ALIGNMENT OF DAM ACROSS WEST CHANNEL OF SNAKE RIVER, SHEET 3 OF 5, 1924 (on file at the Idaho State Office of Water Resources, Boise, Idaho) - Snake River Valley Irrigation District, East Side of Snake River (River Mile 796), Shelley, Bingham County, ID

Nitrate Trends in Minnesota Rivers

USGS Publications Warehouse

Wall, Dave; Christopherson, Dave; Lorenz, Dave; Martin, Gary

2013-01-01

The objective of this study was to assess long-term trends (30 to 35 years) of flow-adjusted concentrations of nitrite+nitrate-N (hereinafter referred to as nitrate) in a way that would allow us to discern changing trends. Recognizing that these trends are commonly different from one river to another river and from one part of the state to another, our objective was to examine as many river monitoring sites across the state as possible for which sufficient long term streamflow and concentration data were available.

Comparison of hydromorphological assessment methods: Application to the Boise River, USA

NASA Astrophysics Data System (ADS)

Benjankar, Rohan; Koenig, Frauke; Tonina, Daniele

2013-06-01

Recent national and international legislation (e.g., the European Water Framework Directive) identified the need to quantify the ecological condition of river systems as a critical component for an integrated river management approach. An important defining driver of ecological condition is stream hydromorphology. Several methodologies have been proposed from simple table-based approaches to complex hydraulics-based models. In this paper, three different methods for river hydromorphological assessment are applied to the Boise River, United States of America (USA): (1) the German LAWA overview method (Bund/Laender Arbeitsgemeinschaft Wasser/German Working Group on water issues of the Federal States and the Federal Government represented by the Federal Environment Ministry), (2) a special approach for a hydromorphological assessment of urban rivers and (3) a hydraulic-based method. The hydraulic-based method assessed stream conditions from a statistical analysis of flow properties predicted with hydrodynamic modeling. The investigation focuses on comparing the three methods and defining the transferability of the methods among different contexts, Europe and West United States. It also provides comparison of the hydromorphological conditions of an urban and a rural reaches of the Boise River.

Highway to the Heartland.

ERIC Educational Resources Information Center

Turner, James S.

1991-01-01

Discusses "Always a River," a joint project of six midwestern state humanities councils that focuses on the Ohio River Valley's history, ecology, and development. Highlights exhibitions to be set up on a river barge that will tour Ohio River towns and cities during 1991. Stresses interrelationships between the river and the communities…

2. SNAKE RIVER VALLEY IRRIGATION DISTRICT DAM, PHOTOGRAPHIC COPY OF ...

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

2. SNAKE RIVER VALLEY IRRIGATION DISTRICT DAM, PHOTOGRAPHIC COPY OF DRAWING, PLAN, SHEET 5 OF 5, 1924 (on file at the Idaho State Office of Water Resources, Boise, Idaho) - Snake River Valley Irrigation District, East Side of Snake River (River Mile 796), Shelley, Bingham County, ID

DETECTING FOREST STRESS AND DECLINE IN RESPONSE TO INCREASING RIVER FLOW IN SOUTHWEST FLORIDA, USA

EPA Science Inventory

Forest stress and decline resulting from increased river flows were investigated in Myakka River State Park (MRSP), Florida, USA. Since 1977, land-use changes around the upper Myakka River watershed have resulted in significant increases in water entering the river, which have...

Water-Resources Investigations in Wisconsin, 2002

USGS Publications Warehouse

Hueschen, K. A.; Jones, S.Z.; Fuller, J.A.

2002-01-01

Runoff for rivers in the state ranged from 67 percent of the average annual runoff (1964–2001) at the Kewaunee River site in the northeast part of the state to 160 percent of the average annual runoff (1944–2001) at the Eau Galle River at Spring Valley site in the west central part of the state. Departures of runoff in the 2001 water year as a percent of long-term average runoff in the state (determined using stations with drainage areas greater than 150 square miles and at least 20 years of record) are shown in figure 4.

Adaptive management of flows from dams: a win-win framework for water users

USGS Publications Warehouse

Irwin, Elise R.

2013-01-01

Alabama is blessed with more than 77,000 miles of rivers and streams that carve through the terrestrial landscape of the state. When you think about it, every road you drive on crosses a river and many of our major cities are located on the bank of a river. In fact, Alabama's capital cities - Cahawba (Dallas County; 1820-1826), Tuscaloosa (Tuscaloosa County; 1826-1846), and Montgomery County; 1846-present) - were all located on major rivers. It is estimated by the U.S. Geological Survey that 10 percent of the freshwater resources in the continental United States flows through Alabama. When you look at a map of its hydrology, the state is blue!

An Old-Growth Definition for Red River Bottom Forests in the Eastern United States

Treesearch

Ted Shear; Mike Young; Robert Kellison

1997-01-01

Our goal was to develop a description of old-growth red river bottom forests of the Southeastern United States. We compared the characteristics of forests described in the scientific literature and forests we examined to various published criteria for old-growth condition. Because red rivers are a relatively new landscape feature (most 250 years old, resulting from...

Large rivers of the United States

USGS Publications Warehouse

Iseri, Kathleen T.; Langbein, Walter Basil

1974-01-01

Information on the flow of the 28 largest rivers in the United States is presented for the base periods 1931-60 and 1941-70. Drainage area, stream length, source, and mouth are included. Table 1 shows the average discharge at downstream gaging stations. Table 2 lists large rivers in order of average discharge at the mouth, based on the period 1941-70.

Science implementation of Forecast Mekong for food and environmental security

USGS Publications Warehouse

Turnipseed, D. Phil

2012-01-01

Forecast Mekong is a significant international thrust under the Delta Research and Global Observation Network (DRAGON) of the U.S. Geological Survey (USGS) and was launched in 2009 by the U.S. Department of State and the Foreign Ministers of Cambodia, Laos, Thailand, and Vietnam under U.S. Department of State Secretary Hillary R. Clinton's Lower Mekong Initiative to enhance U.S. engagement with countries of the Lower Mekong River Basin in the areas of environment, health, education, and infrastructure. Since 2009, the USGS has worked closely with the U.S. Department of State; personnel from Cambodia, Laos, Thailand, and Vietnam; nongovernmental organizations; and academia to collect and use research and data from the Lower Mekong River Basin to provide hands-on results that will help decisionmakers in future planning and design for restoration, conservation, and management efforts in the Lower Mekong River Basin. In 2012 Forecast Mekong is highlighting the increasing cooperation between the United States and Lower Mekong River Basin countries in the areas of food and environmental security. Under the DRAGON, Forecast Mekong continues work in interactive data integration, modeling, and visualization system by initiating three-dimensional bathymetry and river flow data along with a pilot study of fish distribution, population, and migratory patterns in the Lower Mekong River Basin. When fully developed by the USGS, in partnership with local governments and universities throughout the Mekong River region, Forecast Mekong will provide valuable planning tools to visualize the consequences of climate change and river management.

[Effects of occupational exposure to pesticides on semen quality of workers in an agricultural community of Merida state, Venezuela].

PubMed

Miranda-Contreras, Leticia; Cruz, Ibis; Osuna, Jesús A; Gómez-Pérez, Roald; Berrueta, Lisbeth; Salmen, Siham; Colmenares, Melisa; Barreto, Silvio; Balza, Alirio; Morales, Yasmin; Zavala, Leisalba; Labarca, Emilitza; García, Nelly; Sanchez, Beluardi; Contreras, Carlos A; Andrade, Henry

2015-06-01

Numerous studies report adverse effects of pesticides on male reproductive health. The objectives of this study were to investigate whether there is a relationship between occupational exposure to pesticides and semen quality, and to determine whether chronic exposure to pesticides differentially affects semen quality in men of different ages. A comparative study of 64 farmers and 64 control men was performed. The farmers were interviewed to determine their occupational history and particularly, activities that may involve exposure to pesticides. Semen parameters were evaluated and a comparative analysis of semen variables between exposed and control groups, as well as between age groups: 18-29, 30-37 and 38-60 years was done. Significant alterations of some semen parameters in the exposed group were found, such as: decreases in sperm concentration, slow progressive motility and sperm membrane integrity; at the same time, increases in eosin Y positive and sperm DNA fragmentation index. The results obtained by age groups showed significant differences between exposed and control groups for the parameters of membrane integrity, eosin Y positive and sperm DNA fragmentation index, being the exposed group between 18-29 years that showed the highest altered cases of these parameters. Our results prove that occupational pesticide exposure is associated with alterations in sperm quality, creating a risk to farm workers in their reproductive capacity.

DO COMMERCIAL SEROLOGIC TESTS FOR TRYPANOSOMA CRUZI INFECTION DETECT MEXICAN STRAINS IN WOMEN AND NEWBORNS?

PubMed Central

Gamboa-León, Rubi; Gonzalez-Ramirez, Claudia; Padilla-Raygoza, Nicolas; Sosa-Estani, Sergio; Caamal-Kantun, Alejandra; Buekens, Pierre; Dumonteil, Eric

2012-01-01

We sought to determine the serological test that could be used for Trypanosoma cruzi seroprevalence studies in Mexico, where lineage I predominates. In a previous study among pregnant women and their newborns in the states of Yucatan and Guanajuato, we reported a 0.8–0.9% of prevalence for T. cruzi–specific antibodies by Stat-Pak and Wiener ELISA. We have expanded this study here by performing an additional non-commercial ELISA and confirming the seropositives with Western blot, using whole antigens of a local parasite strain. We found a seroprevalence of 0.6% (3/500) in Merida and 0.4% in Guanajuato (2/488). The 5 seropositive umbilical cord samples reacted to both non-commercial ELISA and Western blot tests, and only 1 of the maternal samples was not reactive to non-commercial ELISA. A follow-up of the newborns at 10 mo was performed in Yucatan to determine the presence of T. cruzi antibodies in children as evidence of congenital infection. None of the children was seropositive. One newborn from an infected mother died at 2 wk of age of cardiac arrest, but T. cruzi infection was not confirmed. The T. cruzi seroprevalence data obtained with both commercial tests (Stat-Pak and ELISA Wiener) are similar to those from non-commercial tests using a local Mexican strain of T. cruzi. PMID:21506787

15. View of Tombigbee River Bridge facing same direction as ...

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

15. View of Tombigbee River Bridge facing same direction as in photograph no. MS-13-14 except this view is the underside of the bridge. - Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182, Columbus, Lowndes County, MS

Seasonal and spatial patterns in diurnal cycles in streamflow in the western United States

USGS Publications Warehouse

Lundquist, J.D.; Cayan, D.R.

2002-01-01

The diurnal cycle in streamflow constitutes a significant part of the variability in many rivers in the western United States and can be used to understand some of the dominant processes affecting the water balance of a given river basin. Rivers in which water is added diurnally, as in snowmelt, and rivers in which water is removed diurnally, as in evapotranspiration and infiltration, exhibit substantial differences in the timing, relative magnitude, and shape of their diurnal flow variations. Snowmelt-dominated rivers achieve their highest sustained flow and largest diurnal fluctuations during the spring melt season. These fluctuations are characterized by sharp rises and gradual declines in discharge each day. In large snowmelt-dominated basins, at the end of the melt season, the hour of maximum discharge shifts to later in the day as the snow line retreats to higher elevations. Many evapotranspiration/infiltration-dominated rivers in the western states achieve their highest sustained flows during the winter rainy season but exhibit their strongest diurnal cycles during summer months, when discharge is low, and the diurnal fluctuations compose a large percentage of the total flow. In contrast to snowmelt-dominated rivers, the maximum discharge in evapotranspiration/infiltration-dominated rivers occurs consistently in the morning throughout the summer. In these rivers, diurnal changes are characterized by a gradual rise and sharp decline each day.

7 CFR 927.11 - District.

Code of Federal Regulations, 2014 CFR

2014-01-01

... District shall include all the counties in the State of Oregon except for Hood River and Wasco counties. (2) Mid-Columbia District shall include Hood River and Wasco counties in the State of Oregon, and the counties of Skamania and Klickitat in the State of Washington. (3) Wenatchee District shall include the...

7 CFR 927.11 - District.

Code of Federal Regulations, 2010 CFR

2010-01-01

... District shall include all the counties in the State of Oregon except for Hood River and Wasco counties. (2) Mid-Columbia District shall include Hood River and Wasco counties in the State of Oregon, and the counties of Skamania and Klickitat in the State of Washington. (3) Wenatchee District shall include the...

7 CFR 927.11 - District.

Code of Federal Regulations, 2011 CFR

2011-01-01

... District shall include all the counties in the State of Oregon except for Hood River and Wasco counties. (2) Mid-Columbia District shall include Hood River and Wasco counties in the State of Oregon, and the counties of Skamania and Klickitat in the State of Washington. (3) Wenatchee District shall include the...

7 CFR 927.11 - District.

Code of Federal Regulations, 2013 CFR

2013-01-01

... District shall include all the counties in the State of Oregon except for Hood River and Wasco counties. (2) Mid-Columbia District shall include Hood River and Wasco counties in the State of Oregon, and the counties of Skamania and Klickitat in the State of Washington. (3) Wenatchee District shall include the...

7 CFR 927.11 - District.

Code of Federal Regulations, 2012 CFR

2012-01-01

... District shall include all the counties in the State of Oregon except for Hood River and Wasco counties. (2) Mid-Columbia District shall include Hood River and Wasco counties in the State of Oregon, and the counties of Skamania and Klickitat in the State of Washington. (3) Wenatchee District shall include the...

17. View of Tombigbee River Bridge showing same broken railing ...

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

17. View of Tombigbee River Bridge showing same broken railing as was shown in photograph no. MS-13-16. View is from the ground looking northwest. - Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182, Columbus, Lowndes County, MS

Agroforestry systems in the Sonora River Watershed, Mexico: An example of effective land stewardship

Treesearch

Diego Valdez-Zamudio; Peter F. Ffolliot

2000-01-01

The Sonora River watershed is located in the central part of the state of Sonora,Mexico, and is one of the most important watersheds in the region. Much of the state's economy depends on the natural resources, products, and productive activities developed in this watershed. Many natural areas along the river and its tributaries have been converted to a large...

Wanted dead or alive: A state-space mark-recapture-recovery model incorporating multiple recovery types and state uncertainty

USGS Publications Warehouse

Hostetter, Nathan; Gardner, Beth; Evans, Allen F.; Cramer, Bradley M.; Payton, Quinn; Collis, Ken; Roby, Daniel D.

2017-01-01

We developed a state-space mark-recapture-recovery model that incorporates multiple recovery types and state uncertainty to estimate survival of an anadromous fish species. We apply the model to a dataset of out-migrating juvenile steelhead trout (Oncorhynchus mykiss) tagged with passive integrated transponders, recaptured during outmigration, and recovered on bird colonies in the Columbia River basin (2008-2014). Recoveries on bird colonies are often ignored in survival studies because the river reach of mortality is often unknown, which we model as a form of state uncertainty. Median outmigration survival from release to the lower river (river kilometer 729 to 75) ranged from 0.27 to 0.35, depending on year. Recovery probabilities were frequently >0.20 in the first river reach following tagging, indicating that one out of five fish that died in that reach was recovered on a bird colony. Integrating dead recovery data provided increased parameter precision, estimation of where birds consumed fish, and survival estimates across larger spatial scales. More generally, these modeling approaches provide a flexible framework to integrate multiple sources of tag recovery data into mark-recapture studies.

Studies on the current state of water quality in the Segamat River

NASA Astrophysics Data System (ADS)

Razelan, Faridah Mohd; Tahir, Wardah; E. M Yahaya, Nasehir Khan

2018-04-01

Nowadays, pollution has become a major concern in developed and developing countries. In a study on the current state of Segamat River water quality; on-site data collection and observation and also laboratory data analysis have been implemented. Studies showed that the downstream of the Segamat River has recorded a significant reduction in quality of water during the dry season compared to the wet season. The deterioration of water quality is caused by the activities along the river such as palm oil plantation, municipal waste and waste from settlements. It was also recorded that the point sources were dominating the pollution at Segamat River during the dry season. However, during the wet season, the water quality was impaired by the non-point sources which originated from the upstream of the river.

Return to the river: strategies for salmon restoration in the Columbia River Basin.

Treesearch

Richard N. Williams; Jack A. Standford; James A. Lichatowich; William J. Liss; Charles C. Coutant; Willis E. McConnaha; Richard R. Whitney; Phillip R. Mundy; Peter A. Bisson; Madison S. Powell

2006-01-01

The Columbia River today is a great "organic machine" (White 1995) that dominates the economy of the Pacific Northwest. Even though natural attributes remain—for example, salmon production in Washington State's Hanford Reach, the only unimpounded reach of the mainstem Columbia River—the Columbia and Snake River mainstems are dominated...

33 CFR 117.865 - Clatskanie River.

Code of Federal Regulations, 2010 CFR

2010-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.865 Clatskanie River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

33 CFR 117.865 - Clatskanie River.

Code of Federal Regulations, 2012 CFR

2012-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.865 Clatskanie River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

33 CFR 117.865 - Clatskanie River.

Code of Federal Regulations, 2013 CFR

2013-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.865 Clatskanie River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

33 CFR 117.865 - Clatskanie River.

Code of Federal Regulations, 2011 CFR

2011-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.865 Clatskanie River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

33 CFR 117.865 - Clatskanie River.

Code of Federal Regulations, 2014 CFR

2014-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.865 Clatskanie River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

1. View from Old State House tower, 150 Benefit Street, ...

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

1. View from Old State House tower, 150 Benefit Street, looking southwest towards downtown Providence. - Downtown Providence, Roughley bounded by Woonasquatucket River, Providence River, Interstate Highway 195, & Interstate Highway 95, Providence, Providence County, RI

Evolution of regional stress state based on faulting and folding near the pit river, Shasta county, California

NASA Astrophysics Data System (ADS)

Austin, Lauren Jean

We investigate the evolution of the regional stress state near the Pit River, northern California, in order to understand the faulting style in a tectonic transition zone and to inform the hazard analysis of Fault 3432 near the Pit 3 Dam. By analyzing faults and folds preserved in and adjacent to a diatomite mine north of the Pit River, we have determined principal stress directions preserved during the past million years. We find that the stress state has evolved from predominantly normal to strike slip and most recently to reverse, which is consistent with regional structures such as the extensional Hat Creek Fault to the south and the compressional folding of Mushroom Rock to the north. South of the Pit River, we still observe normal and strike slip faults, suggesting that changes in stress state are moving from north to south through time.

Rio Chama River, New Mexico. Hearing before the Subcommittee on Public Lands, National Parks and Forests of the Committee on Energy and Natural Resources, United States Senate, One Hundredth Congress, First Session on S. 850, Part 1, July 27, 1987

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

1987-01-01

This legislation as drafted would add an important new component to the country's Wild and Scenic River System. The Rio Chama possesses outstanding natural, ecological and recreational characteristics that deserve to be protected under the Wild and Scenic Rivers Act. The New Mexico legislature designated this portion of the Rio Chama as the State's only Scenic and Pastoral River in 1977. The State Act encourages eventual Wild and Scenic Designation, which the legislation considered would accomplish. The text of S. 850 is included first after which 22 statements from various local, state, and national government officials as well as representativesmore » from conservation and recreation organizations are presented. An appendix includes H1 pages of additional material submitted for the record.« less

11. DETAIL VIEW OF BRIDGE DATEPLATE AT SOUTHEAST CORNER OF ...

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

11. DETAIL VIEW OF BRIDGE DATEPLATE AT SOUTHEAST CORNER OF BRIDGE WHICH READS 'NORTH FORK OF WHITE RIVER, VINCENNES STEEL CORP., CONTRACTOR, ARKANSAS STATE HIGHWAY COMMISSION AND THE UNITED STATES BUREAU OF PUBLIC ROADS, 1936' - North Fork Bridge, Spans North Fork of White River at State Highway 5, Norfork, Baxter County, AR

Impact. The southwest end is down, as the buckled middle ...

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

Impact. The southwest end is down, as the buckled middle section splashes into the river. View is to southeast from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

The Application of DPSIR in Restoring Urban Rivers, Case Study: Darakeh and Farahzad River Restoration, Tehran, Iran

NASA Astrophysics Data System (ADS)

Forman Asgharzadeh, Deonna; Oveis Torabi, Seyed; Safaai, Sadaf

2017-04-01

The application of DPSIR in Restoring Urban Rivers (Case Study: Darakeh and Farahzad River Restoration, Tehran-Iran) Seyed Oveis Torabi ، Deonna Forman Asgharzadeh , Sadaf Safaai3 Urban river ecosystems, depending on their form, may serve the sprightliness of a city as a beating heart, breathing lungs or main vessels. In other words, sustaining the ecosystem of an urban river and its riparian land can lead to enhancing life quality indices in a city. The Concept of river ecosystem restoration, born out of sustainable development, underpins restoring the health of an urban environment that circles around its river ecosystem. Darakeh and Farahzad are two connecting rivers that originate from the steep, large valleys of Alborz Mountains and flow a total 60km route through the densely populated city of Tehran. Their original basin was 220 km2; however, it has been tremendously altered during the past 50 years. Alongside with urban development and landuse changes, a large flood deviation canal has detached the northern and southern parts of the basin. In addition, river valleys have suffered from land degradation, occurring at the same time severe damages to the river and its riparian ecosystem. In this study, a novel application of DPSIR framework in urban river restoration is introduced. For restoring an ecosystem in a sustainable manner, it is necessary to identify and analyze the social and economic drivers (D) that provide the root cause of ecosystem damages; their consequent pressures directly harming the river and land (P); the degraded state of land and river ecosystem (S) and its impacts on the environment (I). Such approach will enable a precise selection of interrelated technical, economic, social and environmental actions. Thorough multidisciplinary study of Tehran's recent 400 years history revealed that three factors of "safety against flood", "urbanization" and "land commodity" were the main drivers triggering unsustainable development of Tehran, leading to numerous damages of Darakeh and Farahzad Rivers. Accordingly, pressures (P), degraded state (S) and its impacts (I) were determined. Eventually, restoration actions were extracted as appropriate responses (R) to drivers, pressures, state and impacts. Regarding the planning timeline, short-term actions correspond to impacts, mid-term actions address the pressure and state factors and finally, long-term actions comply with the drivers. The application of DPSIR proved as a successful approach to holistic, comprehensive and systematic interpretation of the complicated issues for restoration of Darakeh and Farahzad rivers.

33 CFR 117.881 - John Day River.

Code of Federal Regulations, 2013 CFR

2013-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.881 John Day River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

33 CFR 117.881 - John Day River.

Code of Federal Regulations, 2014 CFR

2014-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.881 John Day River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

33 CFR 117.881 - John Day River.

Code of Federal Regulations, 2012 CFR

2012-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.881 John Day River. The draw of the... (Washington State Department of Fisheries and the Fish Commission of Oregon) for the Columbia River Fishery...

Abrupt state change of river water quality (turbidity): Effect of extreme rainfalls and typhoons.

PubMed

Lee, Chih-Sheng; Lee, Yi-Chao; Chiang, Hui-Min

2016-07-01

River turbidity is of dynamic nature, and its stable state is significantly changed during the period of heavy rainfall events. The frequent occurrence of typhoons in Taiwan has caused serious problems in drinking water treatment due to extremely high turbidity. The aim of the present study is to evaluate impact of typhoons on river turbidity. The statistical methods used included analyses of paired annual mean and standard deviation, frequency distribution, and moving standard deviation, skewness, and autocorrelation; all clearly indicating significant state changes of river turbidity. Typhoon Morakot of 2009 (recorded high rainfall over 2000mm in three days, responsible for significant disaster in southern Taiwan) is assumed as a major initiated event leading to critical state change. In addition, increasing rate of turbidity in rainfall events is highly and positively correlated with rainfall intensity both for pre- and post-Morakot periods. Daily turbidity is also well correlated with daily flow rate for all the eleven events evaluated. That implies potential prediction of river turbidity by river flow rate during rainfall and typhoon events. Based on analysis of stable state changes, more effective regulations for better basin management including soil-water conservation in watershed are necessary. Furthermore, municipal and industrial water treatment plants need to prepare and ensure the adequate operation of water treatment with high raw water turbidity (e.g., >2000NTU). Finally, methodology used in the present of this study can be applied to other environmental problems with abrupt state changes. Copyright © 2016 Elsevier B.V. All rights reserved.

1. Photographic copy of the original construction drawing, 1925, by ...

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

1. Photographic copy of the original construction drawing, 1925, by Missouri State Highway Department. General elevation and dimensions of arch ring - Meramec River Bridge, Spanning Meramec River at Missouri State Route 19, Steelville, Crawford County, MO

77 FR 43591 - Tri-State Financial Co., LLC, (d/b/a North Country Ethanol), Red River Energy, LLC; Notice of Filing

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-25

... Financial Co., LLC, (d/b/a North Country Ethanol), Red River Energy, LLC; Notice of Filing Take notice that on July 10, 2012, Tri-State Financial Co., LLC, d/ b/a North Country Ethanol (Tri-State), and Red... the Tri- State's ethanol facility near Rosholt, in Roberts County, South Dakota (the Delivery Line...

Dust trailing from the top chord, the bridge falls toward ...

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

Dust trailing from the top chord, the bridge falls toward the river, as the southwest end (right) falls first. View southeast from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

18. View of Tombigbee River Bridge facing east showing upstream ...

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

18. View of Tombigbee River Bridge facing east showing upstream side of bridge opposite broken railing located on the downstream side. Fallen power pole and telephone cable is shown in the center of the photograph. - Tombigbee River Bridge, Spanning Tombigbee River at State Highway 182, Columbus, Lowndes County, MS

75 FR 11554 - Yakima River Basin Conservation Advisory Group Charter Renewal; Notice of Charter Renewal

Federal Register 2010, 2011, 2012, 2013, 2014

2010-03-11

... the reliability of water supplies for irrigation. FOR FURTHER INFORMATION CONTACT: Ms. Dawn Wiedmeier... River Basin Water Conservation Program. In consultation with the State, the Yakama Nation, Yakima River... nonstructural cost-effective water conservation measures in the Yakima River basin. Improvements in the...

ENVIRONMENTAL MONITORING AND ASSESSMENT - GREAT RIVER ECOSYSTEMS PROGRAM (EMAP-GRE) GREAT RIVER ECOSYSTEMS FIELD OPERATIONS MANUAL

EPA Science Inventory

This manual describes procedures for collecting samples and field measurements for biotic assemblages and abiotic characteristics of the Great Rivers of the Central Basin of the United States: the Missouri, Upper Mississippi, and Ohio Rivers. In addition to the technical and logi...

33 CFR 163.01 - Application.

Code of Federal Regulations, 2010 CFR

2010-07-01

... navigating the harbors, rivers, and inland waters of the United States, except the Great Lakes and their connecting and tributary waters as far east as Montreal, the Red River of the North, the Mississippi River and its tributaries above Huey P. Long Bridge, and that part of the Atchafalaya River above its...

An Automated Approach to Extracting River Bank Locations from Aerial Imagery Using Image Texture

DTIC Science & Technology

2013-01-01

Atchafalaya River, LA. Map Data: Google, United States Department of Agriculture Farm Ser- vice Agency, Europa Technologies AUTOMATED RIVER BANK...traverse morphologically smooth landscapes including rivers in sand or ice . Within these limitations, we hold that this technique rep- resents a valuable

An Archaeological Sample Survey of the Whitlow Ranch Reservoir, Pinal County, Arizona.

DTIC Science & Technology

1977-09-01

in situ Hohokam developme,z. The Salado concept itself may be questioned; Hohokam and Salade cc-stitute similar manifes- tations and the criteria for...Gila Aqueducts, Agua Fria River to Gila River, Arizona. Arizona State University Anthropological Research Paper 1. Forrester, J. D. 1962 Folio of...Weaver, Donald E., Jr. 1974 Archaeological investigations at the Westwing site, AZ T:7:27 (ASU), Agua Fria River Valley, Arizona. Arizona State Univer

Comparative Analysis Of River Conservation In The United States And South Africa

EPA Science Inventory

Both the United States and South Africa are recognized for their strong and innovative approaches to the conservation of river ecosystems. These national programs possess similar driving legislation and ecoregional classification schemes supported by comprehensive monitoring prog...

Bathymetric surveys of the Neosho River, Spring River, and Elk River, northeastern Oklahoma and southwestern Missouri, 2016–17

USGS Publications Warehouse

Hunter, Shelby L.; Ashworth, Chad E.; Smith, S. Jerrod

2017-09-26

In February 2017, the Grand River Dam Authority filed to relicense the Pensacola Hydroelectric Project with the Federal Energy Regulatory Commission. The predominant feature of the Pensacola Hydroelectric Project is Pensacola Dam, which impounds Grand Lake O’ the Cherokees (locally called Grand Lake) in northeastern Oklahoma. Identification of information gaps and assessment of project effects on stakeholders are central aspects of the Federal Energy Regulatory Commission relicensing process. Some upstream stakeholders have expressed concerns about the dynamics of sedimentation and flood flows in the transition zone between major rivers and Grand Lake O’ the Cherokees. To relicense the Pensacola Hydroelectric Project with the Federal Energy Regulatory Commission, the hydraulic models for these rivers require high-resolution bathymetric data along the river channels. In support of the Federal Energy Regulatory Commission relicensing process, the U.S. Geological Survey, in cooperation with the Grand River Dam Authority, performed bathymetric surveys of (1) the Neosho River from the Oklahoma border to the U.S. Highway 60 bridge at Twin Bridges State Park, (2) the Spring River from the Oklahoma border to the U.S. Highway 60 bridge at Twin Bridges State Park, and (3) the Elk River from Noel, Missouri, to the Oklahoma State Highway 10 bridge near Grove, Oklahoma. The Neosho River and Spring River bathymetric surveys were performed from October 26 to December 14, 2016; the Elk River bathymetric survey was performed from February 27 to March 21, 2017. Only areas inundated during those periods were surveyed.The bathymetric surveys covered a total distance of about 76 river miles and a total area of about 5 square miles. Greater than 1.4 million bathymetric-survey data points were used in the computation and interpolation of bathymetric-survey digital elevation models and derived contours at 1-foot (ft) intervals. The minimum bathymetric-survey elevation of the Neosho River was 709.18 ft above North American Vertical Datum of 1988, which corresponds to a maximum depth of 34.22 ft. The minimum bathymetric-survey elevation of the Spring River was 714.18 ft above North American Vertical Datum of 1988, which corresponds to a maximum depth of 29.22 ft. The minimum bathymetric-survey elevation of the Elk River was 715.62 ft above North American Vertical Datum of 1988, which corresponds to a maximum depth of 27.78 ft.

National Smart Water Grid

DOE Office of Scientific and Technical Information (OSTI.GOV)

Beaulieu, R A

The United States repeatedly experiences floods along the Midwest's large rivers and droughts in the arid Western States that cause traumatic environmental conditions with huge economic impact. With an integrated approach and solution these problems can be alleviated. Tapping into the Mississippi River and its tributaries, the world's third largest fresh water river system, during flood events will mitigate the damage of flooding and provide a new source of fresh water to the Western States. The trend of increased flooding on the Midwest's large rivers is supported by a growing body of scientific literature. The Colorado River Basin and themore » western states are experiencing a protracted multi-year drought. Fresh water can be pumped via pipelines from areas of overabundance/flood to areas of drought or high demand. Calculations document 10 to 60 million acre-feet (maf) of fresh water per flood event can be captured from the Midwest's Rivers and pumped via pipelines to the Colorado River and introduced upstream of Lake Powell, Utah, to destinations near Denver, Colorado, and used in areas along the pipelines. Water users of the Colorado River include the cities in southern Nevada, southern California, northern Arizona, Colorado, Utah, Indian Tribes, and Mexico. The proposed start and end points, and routes of the pipelines are documented, including information on right-of-ways necessary for state and federal permits. A National Smart Water Grid{trademark} (NSWG) Project will create thousands of new jobs for construction, operation, and maintenance and save billions in drought and flood damage reparations tax dollars. The socio-economic benefits of NWSG include decreased flooding in the Midwest; increased agriculture, and recreation and tourism; improved national security, transportation, and fishery and wildlife habitats; mitigated regional climate change and global warming such as increased carbon capture; decreased salinity in Colorado River water crossing the US-Mexico border; and decreased eutrophication (excessive plant growth and decay) in the Gulf of Mexico to name a few. The National Smart Water Grid{trademark} will pay for itself in a single major flood event.« less

Wind River Experimental Forest.

Treesearch

Valerie. Rapp

2003-01-01

The Wind River Experimental Forest, known as the cradle of forest research in the Pacific Northwest, is a major center for ecological and silvicultural research in west-side Pacific Northwest forests. In the state of Washington, Wind River Experimental Forest is in the south-central area of the Gifford Pinchot National Forest, north of the Columbia River Gorge National...

COMPARISON OF RANDOM SITE SELECTION AT MULTIPLE INTENSITIES FOR THE ASSESSMENT OF THE OHIO RIVER FISH COMMUNITY

EPA Science Inventory

The Ohio River Valley Sanitation Commission (ORSANCO) is a compact of eight states representing interests in the Ohio River basin that has been instrumental in the development of biological monitoring of the Ohio River. In the past, ORSANCO has conducted intensive surveys by samp...

33 CFR 110.65 - Indian River Bay, Del.

Code of Federal Regulations, 2013 CFR

2013-07-01

... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Indian River Bay, Del. 110.65... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.65 Indian River Bay, Del. Beginning at a point bearing... State highway bridge across Indian River Inlet; thence 174°, 600 feet; thence 264°, 800 feet; thence 354...

33 CFR 110.65 - Indian River Bay, Del.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Indian River Bay, Del. 110.65... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.65 Indian River Bay, Del. Beginning at a point bearing... State highway bridge across Indian River Inlet; thence 174°, 600 feet; thence 264°, 800 feet; thence 354...

33 CFR 110.65 - Indian River Bay, Del.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Indian River Bay, Del. 110.65... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.65 Indian River Bay, Del. Beginning at a point bearing... State highway bridge across Indian River Inlet; thence 174°, 600 feet; thence 264°, 800 feet; thence 354...

33 CFR 110.65 - Indian River Bay, Del.

Code of Federal Regulations, 2014 CFR

2014-07-01

... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Indian River Bay, Del. 110.65... ANCHORAGE REGULATIONS Special Anchorage Areas § 110.65 Indian River Bay, Del. Beginning at a point bearing... State highway bridge across Indian River Inlet; thence 174°, 600 feet; thence 264°, 800 feet; thence 354...

33 CFR 162.205 - Suisun Bay, San Joaquin River, Sacramento River, and connecting waters, CA.

Code of Federal Regulations, 2011 CFR

2011-07-01

... executing river and harbor improvement work for the United States, and displaying the signals prescribed by... exercise special caution to avoid interference with the work on which the plant is engaged. Dredges...); a wharf or other structure; work under construction; plant engaged in river and harbor improvement...

76 FR 23485 - Safety Zone; Red River

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-27

...-AA00 Safety Zone; Red River AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone for all waters of the Red River in the State of North..., extending the entire width of the river. This safety zone is needed to protect persons and vessels from...

Longitudinal variation and response to anthropogenic stress in diatom assemblages of the Lower Mississippi River, USA

EPA Science Inventory

The Lower Mississippi River (LMR), below the confluence with the Ohio River, drains over 40% of the continental United States and is an important resource for anthropogenic and biotic use, both within the system and in the receiving Gulf of Mexico. As part of the National Rivers ...

Modal Investment Comparison : The Impact of Upper Mississippi River Lock and Dam Shutdowns on State Highway Infrastructure.

DOT National Transportation Integrated Search

2017-10-30

This project reviews southbound agricultural shipments from the Upper Mississippi River originating from the states of Illinois, Iowa, Minnesota, Missouri, and Wisconsin to understand the potential impacts of shifting barge shipments to the parallel ...

43 CFR 414.1 - Purpose.

Code of Federal Regulations, 2010 CFR

2010-10-01

... STORAGE OF COLORADO RIVER WATER AND DEVELOPMENT AND RELEASE OF INTENTIONALLY CREATED UNUSED APPORTIONMENT IN THE LOWER DIVISION STATES Purposes and Definitions § 414.1 Purpose. (a) What this part does. This... Colorado River water offstream; (2) Permit State-authorized entities to develop intentionally created...

43 CFR 414.1 - Purpose.

Code of Federal Regulations, 2011 CFR

2011-10-01

... STORAGE OF COLORADO RIVER WATER AND DEVELOPMENT AND RELEASE OF INTENTIONALLY CREATED UNUSED APPORTIONMENT IN THE LOWER DIVISION STATES Purposes and Definitions § 414.1 Purpose. (a) What this part does. This... Colorado River water offstream; (2) Permit State-authorized entities to develop intentionally created...

Simulation of ground-water flow in the Cedar River alluvial aquifer flow system, Cedar Rapids, Iowa

USGS Publications Warehouse

Turco, Michael J.; Buchmiller, Robert C.

2004-01-01

Model results indicate that the primary sources of inflow to the modeled area are infiltration from the Cedar River (53.0 percent) and regional flow in the glacial and bedrock materials (34.1 percent). The primary sources of outflow from the modeled area are discharge to the Cedar River (45.4 percent) and pumpage (44.8 percent). Current steady-state pumping rates have increased the flow of water from the Cedar River to the alluvial aquifer by 43.8 cubic feet per second. Steady-state and transient hypothetical pumpage scenarios were used to show the relation between changes in pumpage and changes in infiltration of water from the Cedar River. Results indicate that more than 99 percent of the water discharging from municipal wells infiltrates from the Cedar River, that the time required for induced river recharge to equilibrate with municipal pumpage may be 150 days or more, and that ground-water availability in the Cedar Rapids area will not be significantly affected by doubling current pumpage as long as there is sufficient flow in the Cedar River to provide recharge.

LOOKING EASTSOUTHEAST. Showing downstream side of completed bridge, from confluence ...

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

LOOKING EAST-SOUTHEAST. Showing downstream side of completed bridge, from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

1. BLACK RIVER CANAL PARSHALL FLUME AT UPPER END ...

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

1. BLACK RIVER CANAL - PARSHALL FLUME AT UPPER END OF SUPPLY (USED BY STATE ENGINEER). VIEW TO NORTHEAST - Carlsbad Irrigation District, Black River Canal, 15 miles Southeast of Carlsbad near Malaga, Carlsbad, Eddy County, NM

Application of water quality models to rivers in Johor

NASA Astrophysics Data System (ADS)

Chii, Puah Lih; Rahman, Haliza Abd.

2017-08-01

River pollution is one the most common hazard in many countries in the world, which includes Malaysia. Many rivers have been polluted because of the rapid growth in industrialization to support the country's growing population and economy. Domestic and industrial sewage, agricultural wastes have polluted the rivers and will affect the water quality. Based on the Malaysia Environment Quality Report 2007, the Department of Environment (DOE) has described that one of the major pollutants is Biochemical Oxygen Demand (BOD). Data from DOE in 2004, based on BOD, 18 river basins were classified polluted, 37 river basins were slightly polluted and 65 river basins were in clean condition. In this paper, two models are fitted the data of rivers in Johor state namely Streeter-Phelps model and nonlinear regression (NLR) model. The BOD concentration data for the two rivers in Johor state from year 1981 to year 1990 is analyzed. To estimate the parameters for the Streeter-Phelps model and NLR model, this study focuses on the weighted least squares and Gauss-Newton method respectively. Based on the value of Mean Square Error, NLR model is a better model compared to Streeter-Phelps model.

Accomplishments under the Airport Improvement Program: Fiscal Year 1990 (Ninth Annual Report)

DTIC Science & Technology

1990-01-01

ST PAUL 06 $259,200 INSTALL TAXIWAY SIGNS; EXTEND SERVICE ST PAUL DOWNTOWN HOLMAN FIELD ROAD (RELIEVER) THIEF RIVER FALLS 01 $69,075 INSTALL RUNWAY AND...TAXIWAY SIGNS THIEF RIVER FALLS REGIONAL (COMMERCIAL SERVICE) MISSISSIPPI S2 $101,000 CONDUCT STATE SYSTEM PLAN STUDY STATE OF MISSISSIPPI (SYSTEM...SOL5tRG-HUNTERDON (GENERAL AVIATION) TETERBORO 09 $174,103 ACQUIRE SNOW REMOVAL EQUIPMENT TETERBORO (RELIEVER) TOMS RIVER Oa $189,764 IMPROVE DRAINAGE

Base flow (1966-2009) and streamflow gain and loss (2010) of the Brazos River from the New Mexico-Texas State line to Waco, Texas

USGS Publications Warehouse

Baldys, Stanley; Schalla, Frank E.

2012-01-01

Streamflow was measured at 66 sites from June 6–9, 2010, and at 68 sites from October 16–19, 2010, to identify reaches in the upper Brazos River Basin that were gaining or losing streamflow. Gaining reaches were identified in each of the five subbasins. The gaining reach in the Salt Fork Brazos River Basin began at USGS streamflow-gaging station 08080940 Salt Fork Brazos River at State Highway 208 near Clairemont, Tex. (site SF–6), upstream from where Duck Creek flows into the Salt Fork Brazos River and continued downstream past USGS streamflow-gaging station 08082000 Salt Fork Brazos River near Aspermont, Tex. (site SF–9), to the outlet of the basin. In the Double Mountain Fork Brazos River Basin, a gaining reach from near Post, Tex., downstream to the outlet of the basin was identified. Two gaining reaches were identified in the Clear Fork Brazos River Basin—one from near Roby, Tex., downstream to near Noodle, Tex., and second from Hawley, Tex., downstream to Nugent, Tex. Most of the North Bosque River was characterized as gaining streamflow. Streamflow gains were identified in the main stem of the Brazos River from where the Brazos River main stem forms at the confluence of the Salt Fork Brazos River and Double Mountain Fork Brazos River near Knox City, Tex., downstream to near Seymour, Tex.

The analysis of changes in oxbow lakes characteristics using remote sensing data. A case study from Biebrza River in Poland.

NASA Astrophysics Data System (ADS)

Slapinska, Malgorzata; Chormanski, Jaroslaw

2014-05-01

Biebrza River Valley is located in North-Eastern part of Poland. Biebrza is a river of intermediate size with almost natural character. River has numerous of oxbow lakes. Biebrza River Valley consists of three Basins: Upper, Middle and Lower, which are characterized by different geomorphological structure. Biebrza River Valley is an area of significant ecological importance, especially because it is one of the biggest wetlands in Europe. It consists of almost undisturbed floodplain marshes and fens. Biebrza river is also characterised by low contamination level and small human influence. Because of those characteristics Biebrza River can be treated as a reference area for other floodplains and fen ecosystems in Europe. Since oxbow lakes are the least known part of the river valleys there is a need for more research on them. The objective of this study is the characterisation of the oxbow lake water quality and indirectly oxbow lake state using remote sensing method. For achieving the objective two remote sensing datasets has been analysed: IKONOS and hyperspectral camera AISA. The utility of both data sources was compared and time variability of oxbow lakes was defined. The first part of the remote sensing analysis of oxbow lakes was held with the usage of the satellite images from IKONOS satellite from 20.07.2008 (images were taken from Biebrza National Park resources). All analysis were made in ArcGIS 10.0 and ENVI 5.0. The second part of the image analysis was conducted with the data gained from airborne hyperspectral camera AISA Eagle in August 2013. The oxbow lakes have been described on: state of the habitat, transparency, state of overgrowing, connectivity with the river, maximum area and maximum length. The general method of describing oxbow lakes is visual habitat state, related with natural succession. Three main habitat states of oxbow lakes were designated: privileged (described as 'good'), eutrophic and disappearing. The results confirm the fact that most of the oxbow lakes are habitats which are disappearing or proceeding to disappearance. It also shows the potential of remote sensing data for monitoring this type of water bodies. The fact that first data was collected in 2008 and second in 2013 enabled detection of changes in oxbow lakes during these 5 years.

33 CFR 62.51 - Western Rivers Marking System.

Code of Federal Regulations, 2010 CFR

2010-07-01

... NAVIGATION UNITED STATES AIDS TO NAVIGATION SYSTEM The U.S. Aids to Navigation System § 62.51 Western Rivers... toward the Gulf of Mexico. (b) The Western Rivers System varies from the standard U.S. system as follows...

33 CFR 62.51 - Western Rivers Marking System.

Code of Federal Regulations, 2011 CFR

2011-07-01

... NAVIGATION UNITED STATES AIDS TO NAVIGATION SYSTEM The U.S. Aids to Navigation System § 62.51 Western Rivers... toward the Gulf of Mexico. (b) The Western Rivers System varies from the standard U.S. system as follows...

Space Radar Image of Colorado River

NASA Image and Video Library

1999-04-15

This space radar image illustrates the recent rapid urban development occurring along the lower Colorado River at the Nevada/Arizona state line. Lake Mojave is the dark feature that occupies the river valley in the upper half of the image.

Science partnership between U.S. Geological Survey and the Lower Elwha Klallam Tribe—Understanding the Elwha River Dam Removal Project

USGS Publications Warehouse

Duda, Jeffrey J.; Beirne, Matt M.; Warrick, Jonathan A.; Magirl, Christopher S.

2018-04-16

After nearly a century of producing power, two large hydroelectric dams on the Elwha River in Washington State were removed during 2011 to 2014 to restore the river ecosystem and recover imperiled salmon populations. Roughly two-thirds of the 21 million cubic meters of sediment—enough to fill nearly 2 million dump trucks—contained behind the dams was released downstream, which restored natural processes and initiated important changes to the river, estuarine, and marine ecosystems. A multidisciplinary team of scientists from the Lower Elwha Klallam Tribe, academia, non-governmental organizations, Federal and state agencies, and the U.S. Geological Survey collected key data before, during, and after dam removal to understand the outcomes of this historic project on the Elwha River ecosystem.

Ground-water data collected in the Missouri River Basin units in Kansas during 1954

USGS Publications Warehouse

Mason, B.J.; Loye, Linda

1955-01-01

Ground water studies in the Missouri River basin were begun by the United States Geological Survey during the fall of 1945 as a part of a program for the development of the resources of the basin by the United States Bureau of  Reclamation and other federal agencies. The studies of ground-water resources in the part of Kansas that lies within the Missouri River basin have been coordinated with the cooperative program of ground-water studies which were already being made in Kansas by the U.S Geological Survey, the Kansas State Geological Survey, the Division of Sanitation of the Kansas Board of Health and the Division of Water Resources of the Kansas State Board of Agriculture.  

78 FR 18277 - Special Local Regulation; Low Country Splash, Wando River, Cooper River, and Charleston Harbor...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-26

...-AA08 Special Local Regulation; Low Country Splash, Wando River, Cooper River, and Charleston Harbor... Harbor in Charleston, SC during the Low Country Splash in Charleston, SC, on June 1, 2013. This special... States during the Low Country Splash. C. Discussion of Proposed Rule On Saturday, June 1, 2013, the Low...

75 FR 22626 - Notice of Lodging of Consent Decree With Big River Zinc Corporation Providing for Civil Penalties...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-04-29

... DEPARTMENT OF JUSTICE Notice of Lodging of Consent Decree With Big River Zinc Corporation... April 15, 2009, a proposed Consent Decree with Big River Zinc Corporation (``BRZ'') providing for civil penalties and injunctive Relief under the Clean Air Act in United States v. Big River Zinc Corp., Civil...

Simulation of ground-water flow in the Mojave River basin, California

USGS Publications Warehouse

Stamos, Christina L.; Martin, Peter; Nishikawa, Tracy; Cox, Brett F.

2001-01-01

The proximity of the Mojave River ground-water basin to the highly urbanized Los Angeles region has led to rapid growth in population and, consequently, to an increase in the demand for water. The Mojave River, the primary source of surface water for the region, normally is dry-except for a small stretch of perennial flow and periods of flow after intense storms. Thus, the region relies almost entirely on ground water to meet its agricultural and municipal needs. Ground-water withdrawal since the late 1800's has resulted in discharge, primarily from pumping wells, that exceeds natural recharge. To better understand the relation between the regional and the floodplain aquifer systems and to develop a management tool that could be used to estimate the effects that future stresses may have on the ground-water system, a numerical ground-water flow model of the Mojave River ground-water basin was developed, in part, on the basis of a previously developed analog model. The ground-water flow model has two horizontal layers; the top layer (layer 1) corresponds to the floodplain aquifer and the bottom layer (layer 2) corresponds to the regional aquifer. There are 161 rows and 200 columns with a horizontal grid spacing of 2,000 by 2,000 feet. Two stress periods (wet and dry) per year are used where the duration of each stress period is a function of the occurrence, quantity of discharge, and length of stormflow from the headwaters each year. A steady-state model provided initial conditions for the transient-state simulation. The model was calibrated to transient-state conditions (1931-94) using a trial-and-error approach. The transient-state simulation results are in good agreement with measured data. Under transient-state conditions, the simulated floodplain aquifer and regional aquifer hydrographs matched the general trends observed for the measured water levels. The simulated streamflow hydrographs matched wet stress period average flow rates and times of no flow at the Barstow and Afton Canyon gages. Steady-state particle-tracking was used to estimate travel times for mountain-front and streamflow recharge. The simulated travel times for mountain-front recharge to reach the area west of Victorville were about 5,000 to 6,000 years; this result is in reasonable agreement with published results. Steady-state particle-tracking results for streamflow recharge indicate that in most subareas along the river, the particles quickly leave and reenter the river. The complaint that resulted in the adjudication of the Mojave River ground-water basin alleged that the cumulative water production upstream of the city of Barstow had overdrafted the ground-water basin. In order to ascertain the effect of pumping on ground-water and surface-water relations along the Mojave River, two pumping simulations were compared with the 1931-90 transient-state simulation (base case). The first simulation assumed 1931-90 pumping in the upper region (Este, Oeste, Alto, and Transition zone model subareas) but with no pumping in the remainder of the basin, and the second assumed 1931-90 pumping in the lower region (Centro, Harper Lake, Baja, Coyote Lake, and Afton Canyon model subareas) but with no pumping in remainder of the basin. In the upper region, assuming pumping only in the upper region, there was no change in storage, recharge from the Mojave River, ground-water discharge to the Mojave River, or evapotranspiration when compared with the base case. In the lower region, assuming pumping only in the upper region, there was storage accretion, decreased recharge from the Mojave River, increased ground-water discharge to the Mojave River, and increased evapotranspiration when compared with the base case. In the upper region, assuming pumping only in the lower region, there was storage accretion, decreased recharge from the Mojave River, increased ground-water discharge to the Mojave River, and increased evapotranspiration when compared with the base case. In the

Aquatic Plant Control Research Program. A Survey of the Continental United States for Pathogens of Eurasian Watermilfoil

DTIC Science & Technology

1988-04-01

Res. Old boat basin Chelan 13 Sep 1984 Rock Island Res. Mouth of Wenatchee River Chelan 13 Sep 1984 Rock Island Res. Hannah Mining Co. Douglas 13 Sep...States, including ponds, lakes, reser- voirs, rivers , and canals. At the conclusion of the survey, 792 isolates had been collected from tissue samples...acre (9-ha) pond located in Anne Arundel County, Maryland, and an area near the Northeast River in Cecil County, Maryland--and suggested the declines

Low prevalence of high risk human papillomavirus in normal oral mucosa by hybrid capture 2

PubMed Central

González-Losa, Maria del Refugio; Manzano-Cabrera, Luis; Rueda-Gordillo, Florencio; Hernández-Solís, Sandra E.; Puerto-Solís, Luis

2008-01-01

High risk human papillomavirus (HR-HPV) are recognized as a necessary factor to development cervical cancer. During the last decade many studies have found HR-HPV in oral squamous cell carcinoma (OSCC) and normal oral mucosa, however the association between HR-HPV and OSCC is still uncertain. The aim of the study was to determine DNA HR-HPV in normal oral cavity of healthy adults. A cross-sectional study was performed; samples from 77 patients with normal oral cavity were collected at the Dentistry school, Autonomous University of Yucatan, Merida, Yucatan, México. HR-HPV was detected by hybrid capture 2. One sample out of 77(1.2%) was positive for HR-PVH. It was from a man of 50 years old. HRHPV is present in low rate among healthy oral mucosa. Hybrid capture 2 could be a good methodology for large epidemiology studies. PMID:24031173

[Identification of rotavirus associated to serotype G2 in Yucatan, Mexico].

PubMed

Gonzales-Loza, M del R; Polanco-Marín, G G; Puerto-Solis, M

2000-01-01

In the present study, rotavirus G2 serotype was identified from fecal samples of children with gastroenteritis from the city of Merida, Yucatan, Mexico. Virological diagnosis of disease was performed using polycrylamide gel electrophoresis and immunoenzymatic assay. Out of 149 analyzed samples 25 (16.7%) gave positive reaction to rotavirus groups A, of these 23 (92%) were identified as serotype g2, subgroup i and electrophoretic short pattern, whereas 2 (8%) were identified as subgroups II and electrophoretic long pattern, however, the G serotype was not possible to determine. Rotavirus G serotype has not been detected in more than 90% of samples since 1985. This indicates that the number of people susceptible to G2 serotype within the population has increased over recent years, which perhaps indicates that an important outbreak of acute infectious diarrhea caused by the rotavirus G2 serotype may be forthcoming.

PLANT AND PIER #2 EXCAVATION. View is to the northeast, ...

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

PLANT AND PIER #2 EXCAVATION. View is to the northeast, looking from Humboldt County side of river toward Trinity County side - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

COMPLETED STRUCTURE. View is eastsoutheast of downstream side of bridge, ...

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

COMPLETED STRUCTURE. View is east-southeast of downstream side of bridge, from beyond confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

7. View to southeast. View of downstream side of bridge ...

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

7. View to southeast. View of downstream side of bridge from confluence of Trinity and South Fork Trinity Rivers. (90mm Lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

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.

Persistent organic pollutant concentrations in first birth mothers across Mexico.

PubMed

Rodríguez-Dozal, Sandra; Riojas Rodríguez, Horacio; Hernández-Ávila, Mauricio; Van Oostdam, Jay; Weber, Jean Philippe; Needham, Larry L; Trip, Luke

2012-01-01

This project was initiated by the North America Commission for Environmental Cooperation (CEC). Its main purpose was to obtain an initial profile on pregnant woman's exposure to persistent organic pollutants (POPs) in North America (Canada, the United States and Mexico). Persistent organic pollutants are transferred to the fetus via the placenta during the pregnancy or to the infant via maternal milk; therefore, the pregnant woman's body burden is important because of the higher exposures and potential health effects in the fetus and infant. This paper presents the results from 240 pregnant women in 10 Mexican cities, and includes the concentrations of various POPs such as polychlorinated biphenyls (PCBs), organochlorine pesticides and polychlorinated dibenzo dioxins and furans (PCDDs and PCDFs) in maternal plasma. We found concentrations of p,p'-DDE in maternal samples from Coatzacoalcos to be ∼60% higher than those found in Ciudad Obregon, which had the second highest concentration. Pregnant women from Merida had higher mean concentrations of PCBs than all women in other regions. Results for PCDDs and PCDFs plus dioxin-like PCBs data were only available on the basis of composite samples, and their concentrations are similar in most cities except for Coatzacoalcos, which had more than double the concentration found in other cities. Although this study provides useful information on the variability of POPs in specific populations and possible regional/local differences, these results cannot be generalized to the entire Mexican population because of differences in age, gender, sources of exposure and nonrandom nature of the sample.

Natural Risks at the Bottom Side of Ameca River, in the State Limits of Jalisco and Nayarit, Mexico

NASA Astrophysics Data System (ADS)

Pinedo, K. G.; Maciel, R.; Pena, L. E.; García García, E. X.; Ramos Chavez, C.

2016-12-01

At world-wide level, the population centers are exposed to natural risks and more those that are located to borders of the rivers, where hydrometeorological and geologic phenomenon are conjugated, and even increased by the action of the man. From 1911 to 2015, the disasters registered in the world due to flood by river overflowing were 2 701, with 2 545 affected 224 110, of which 60 229 747 lost their homes and 4 449 031 deads, causing therefore an economic loss of approximately $549 052 761 dollars. The case of study is the low part of the Ameca River, the one of the main rivers of the states of Jalisco and Nayarit in the west zone of Mexico. It is interesting, since it have its mouth near the tourist area (with considerable affluence at national level), with infrastructure (airport and bridges) and towns of both referred states; as well because at the pass of the years, this river have had overflows affecting municipalities, bridges and loss of mangrove swamp. In order to determine the feasible impacts to happen with the overflow of the Ameca River, the aerial photographs of area of study and satellite images were analyzed (historical and present), likewise information of the river basin physical environment generated by INEGI with special emphasis in the low part of the river basin and a campaign of work field, to delimit the zones that have shown some affectation. The objective of this investigation is to contribute to the risk analysis of the adjacent localities to the river, with the purpose of diminishing the impact in the population. As preliminary results appear maps with boundaries of paleo-channels, which mark the zone of influence during overflows of the Ameca River, the towns which can be affected and the population exposed.

A REVIEW OF BIOLOGICAL ASSESSMENT TOOLS AND BIOCRITERIA FOR STREAMS AND RIVERS IN NEW ENGLAND STATES

EPA Science Inventory

The primary purpose of this document is to serve as a detailed description of the biological assessment programs for wadeable streams and rivers within U.S. Environmental Protection Agency Region 1 states (i.e., Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island and V...

Pharmaceuticals and organochlorine pesticides in sediments of an urban river in Florida, United States

USDA-ARS?s Scientific Manuscript database

Purpose Sediments from a rural to urban gradient along the Alafia River in Florida, United States were investigated to determine the risk of environmental contamination with legacy (organochlorine pesticides, OCPs) and new contaminants (pharmaceuticals). Materials and methods Bed sediments (0-10 cm)...

A Submersed Macrophyte Index of Condition for the Upper Mississippi River

EPA Science Inventory

Portions of the Upper Mississippi River are listed as impaired for aquatic life use under section 303(d) of the United States Clean Water Act by the State of Minnesota’s Pollution Control Agency and Wisconsin’s Department of Natural Resources for exceeding turbidity and eutrophic...

Curriculum Review Evaluation on Entrepreneurial Education in Cross River State Higher Institutions

ERIC Educational Resources Information Center

Ambekeh, Udida Lucy

2013-01-01

This study investigated curriculum organization and delivery towards functional entrepreneurial education transformation of students in Higher Institutions in Cross River State -- Nigeria. To guide the conduct of this study, two research questions and one hypothesis were formulated. Proportionate stratified sampling technique was used in the…

Hydrology, geomorphology, and vegetation of Coastal Plain rivers in the southeastern United States

Treesearch

Cliff R. Hupp

2000-01-01

Rivers of the Coastal Plain of the southeastern United States are characteristically low-gradient meandering systems that develop broad floodplains subjected to frequent and prolonged flooding. These floodplains support a relatively unique forested wetland (Bottomland Hardwoods), which have received considerable ecological study, but distinctly less hydrogeomorphic...

VALUING ACID MINE DRAINAGE REMEDIATION IN WEST VIRGINIA: A HEDONIC MODELING APPROACH

EPA Science Inventory

States with active and abandoned mines face large private and public costs to remediate damage to streams and rivers from acid mine drainage (AMD). Appalachian states have an especially large number of contaminated streams and rivers, and the USGS places AMD as the primary source...

Distribution and conservation standing of West Virginia crayfishes

USGS Publications Warehouse

Loughman, Zachary J.; Welsh, Stuart A.

2010-01-01

The diversity of crayfishes in West Virginia represents a transition between the species-rich southern Appalachian faunas and the depauperate crayfish diversity in the northeastern United States. Currently, 22 described species occur in the state, of which 6 are given S1 status, and 3 are introduced species. One species, Orconectes limosus (Spinycheek Crayfish) is considered extirpated within the past decade. Imperiled species include Cambarus veteranus (Big Sandy Crayfish),Cambarus elkensis (Elk River Crayfish), Cambarus longulus (Atlantic Slope Crayfish), andCambarus nerterius (Greenbrier Cave Crayfish). Three species—O. virilis (Virile Crayfish),Orconectes rusticus (Rusty Crayfish), and Procambarus zonangulus (Southern White River Crawfish)—have introduced populations within the state. Procambarus acutus (White River Crawfish) occurs in bottomland forest along the Ohio River floodplain, and is considered native. Several undescribed taxa have been identified and currently are being described. A statewide survey was initiated in 2007 to document the current distribution and conservation status of crayfishes in West Virginia.

76 FR 63914 - Sabine River Authority of Texas and Sabine River Authority, State of Louisiana; Notice of...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-14

...-foot-high powerhouse located in the right abutment, containing two vertical Kaplan turbines with an... adjacent to the powerhouse. The Sabine River Authorities propose to construct a 1.3-MW minimum flow turbine...

NASA Spacecraft Images Hudson River Flooding from Hurricane Irene

NASA Image and Video Library

2011-09-09

Brown and tan muddy water flows down the Hudson River are seen in this image acquired by NASA Terra spacecraft on Sept. 1, 2011. After the torrential rains from Hurricane Irene, many rivers in the eastern United States were filled with sediment.

77. VIEW SHOWING CONDITION OF OLD M STREET BRIDGE PIER ...

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

77. VIEW SHOWING CONDITION OF OLD M STREET BRIDGE PIER 1 DOLPHIN, LOOKING SOUTHEAST, March 1, 1935. (Steamer Delta King is moored at River Lines Terminal.) - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

Persistent organic pollutants in fish tissue in the mid-continental great rivers of the United States

USGS Publications Warehouse

Blacksom, Karen A.; Walters, David M.; Jicha, Terri M.; Lazorchak, James M.; Angradi, Theodore R.; Bolgrien, David W.

2010-01-01

Great rivers of the central United States (Upper Mississippi, Missouri, and Ohio rivers) are valuable economic and cultural resources, yet until recently their ecological condition has not been well quantified. In 2004–2005, as part of the Environmental Monitoring and Assessment Program for Great River Ecosystems (EMAP-GRE), we measured legacy organochlorines (OCs) (pesticides and polychlorinated biphenyls, PCBs) and emerging compounds (polybrominated diphenyl ethers, PBDEs) in whole fish to estimate human and wildlife exposure risks from fish consumption. PCBs, PBDEs, chlordane, dieldrin and dichlorodiphenyltrichloroethane (DDT) were detected in most samples across all rivers, and hexachlorobenzene was detected in most Ohio River samples. Concentrations were highest in the Ohio River, followed by the Mississippi and Missouri Rivers, respectively. Dieldrin and PCBs posed the greatest risk to humans. Their concentrations exceeded human screening values for cancer risk in 27–54% and 16–98% of river km, respectively. Chlordane exceeded wildlife risk values for kingfisher in 11–96% of river km. PBDE concentrations were highest in large fish in the Missouri and Ohio Rivers (mean > 1000 ng g−1 lipid), with congener 47 most prevalent. OC and PBDE concentrations were positively related to fish size, lipid content, trophic guild, and proximity to urban areas. Contamination of fishes by OCs is widespread among great rivers, although exposure risks appear to be more localized and limited in scope. As an indicator of ecological condition, fish tissue contamination contributes to the overall assessment of great river ecosystems in the U.S.

Denitrification and phosphorus sequestration in restored Oyster beds in the Indian River Lagoon, Florida, USA

USDA-ARS?s Scientific Manuscript database

In 2016, an algae bloom in the St. Lucie River in Florida led the governor to declare a state of emergency. The river is part of a connected system of estuaries along the Atlantic coast of Florida called the Indian River Lagoon (IRL). As with many estuaries around the world, nutrient loading in the ...

33 CFR 165.902 - Niagara River at Niagara Falls, New York-safety zone.

Code of Federal Regulations, 2012 CFR

2012-07-01

... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Niagara River at Niagara Falls... § 165.902 Niagara River at Niagara Falls, New York—safety zone. (a) The following is a safety zone—The United States waters of the Niagara River from the crest of the American and Horseshoe Falls, Niagara...

33 CFR 165.902 - Niagara River at Niagara Falls, New York-safety zone.

Code of Federal Regulations, 2013 CFR

2013-07-01

... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Niagara River at Niagara Falls... § 165.902 Niagara River at Niagara Falls, New York—safety zone. (a) The following is a safety zone—The United States waters of the Niagara River from the crest of the American and Horseshoe Falls, Niagara...

33 CFR 165.902 - Niagara River at Niagara Falls, New York-safety zone.

Code of Federal Regulations, 2014 CFR

2014-07-01

... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Niagara River at Niagara Falls... § 165.902 Niagara River at Niagara Falls, New York—safety zone. (a) The following is a safety zone—The United States waters of the Niagara River from the crest of the American and Horseshoe Falls, Niagara...

33 CFR 165.902 - Niagara River at Niagara Falls, New York-safety zone.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Niagara River at Niagara Falls... § 165.902 Niagara River at Niagara Falls, New York—safety zone. (a) The following is a safety zone—The United States waters of the Niagara River from the crest of the American and Horseshoe Falls, Niagara...

Plant diversity in riparian forests in northwest Colorado: Effects of time and river regulation

Treesearch

Amanda L. Uowolo; Dan Binkley; E. Carol Adair

2005-01-01

During the 20th Century the flow of most rivers in the United States was regulated by diversions and dams, with major impacts on riparian forests. Few unregulated rivers remain to provide baseline information for assessing these impacts. We characterized patterns in riparian plant communities along chronosequences on the unregulated Yampa River and the regulated Green...

Social, political, and institutional setting: Water management problems of the Rio Grande

USGS Publications Warehouse

Douglas, A.J.

2009-01-01

This paper discusses various water management issues facing federal, state, and local agencies charged with managing the water resources of the Rio Grande River Basin and its major tributaries. The Rio Grande - 3,058 km (=1,900 mi) long - is the fourth longest river in the United States. The river's basin is 870,236 km2 (=336,000 mi2) and for roughly two-thirds of its length it forms the United States-Mexican border. It is a major recreational resource providing world class trout fishing near its headwaters in Colorado's San Juan Mountains and shoreline, angling, and boating opportunities near the Colorado-New Mexico border. The Rio Grande is the principal tourist attraction of Big Bend National Park and flows through downtown Albuquerque and El Paso. Many reaches are wide and broad, but almost all are relatively shallow and not navigable by commercial ships. Nevertheless, it is one of the most important renewable water resources of the southwestern United States and North America. The issue of the "manageability" of the river in the face of social forces and disparate administrative jurisdictions that adversely impact Rio Grande flows is a thread linking various sections of the paper together. The length of the river; the fact that major reaches lie in Colorado, New Mexico, and Texas; and its unique role as an international boundary pose complex management problems. The allocation status quo formed by the complex nexus of existing river laws make it difficult to reshape Rio Grande management. ?? 2009 ASCE.

Rainfall and River Currents Retrieved from Microwave Backscatter

USGS Publications Warehouse

Plant, W.J.; Keller, W.C.; Hayes, K.; Nystuen, J.; Spicer, K.

2003-01-01

The use of CW microwave sensors in yielding information on both river surface velocities and rain rates was discussed. Eight CW microwave sensors were installed at Cowlitz river in Western Washington State in the US. The sensors measured the river surface velocity via Doppler shifts at eight locations across the river. Comparison of the surface velocities derived from the sensors mounted on the bridge with those measured by current meters and acoustic sensors demonstrated good agreement.

Transport and sources of sediment in the Missouri River between Garrison Dam and the headwaters of Lake Oahe, North Dakota, May 1988 through April 1991

USGS Publications Warehouse

Berkas, Wayne R.

1995-01-01

Sediment data were collected on and along the Missouri River downstream from Garrison Dam during May 1988, May 1989, and April 1991 to characterize sediment transport in the river. Specific study objectives were to (1) identify erosional and depositional reaches during two steady-state low-flow periods and one steady-state high-flow period; (2) determine if the reaches are consistently eroding or depositing, regardless of streamflow; and (3) determine the sources of suspended sediment in the river. Erosional and depositional reaches differed between the two low-flow periods, indicating that slight changes in the channel configuration between the two periods caused changes in erosional and depositional patterns. Erosional and depositional reaches also differed between the low-flow periods and the high-flow period, indicating that channel changes and increased streamflow velocities affect erosional and depositional reaches. The significant sources of suspended sediment in the Missouri River are the riverbed and riverbanks. The riverbed contributes to the silt and sand load in the river, and the riverbanks contribute to the clay, silt, and sand load. The contribution from tributaries to the suspendedsediment load in the Missouri River usually is small. Occasionally, during low-flow periods on the Missouri River, the Knife River can contribute significantly to the suspended-sediment load in the Missouri River.

Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Mean Annual R-factor, 1971-2000

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the average annual R-factor, rainfall-runoff erosivity measure, compiled for every catchment of NHDPlus for the conterminous United States. The source data are from Christopher Daly of the Spatial Climate Analysis Service, Oregon State University, and George Taylor of the Oregon Climate Service, Oregon State University (2002), who developed spatially distributed estimates of R-factor for the period 1971-2000 for the conterminous United States. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

DETECTION OF TEMPORAL TRENDS IN OHIO RIVER FISH ASSEMBLAGES BASED ON LOCKCHAMBER SURVEYS

EPA Science Inventory

The Ohio River Valley Water Sanitation Commission (ORSANCO), along with cooperating state and federal agencies, sampled fish assemblages from the lockchambers of Ohio River navigational dams from 1957 to 2001. To date, 377 lockchamber rotenone events have been conducted, resulti...

National rivers and streams assessment: fish tissue contaminants

EPA Science Inventory

Overview of the National Rivers and Streams Assessment (NRSA), a statistical survey of flowing waters in the U.S. Survey is designed to: assess the condition of the nation's rivers and streams; help build state and tribal capacity for monitoring and assessment; promote collabor...

ENVIRONMENTAL MONITORING AND ASSESSMENT OF A GREAT RIVER ECOSYSTEM: THE UPPER MISSOURI RIVER PILOT

EPA Science Inventory

The Great River Ecosystems (GREs) are extensively modified physically, hydrologically, and chemically and are not receiving adequate protection to prevent further habitat degradation and loss of biotic integrity. In the United States, ecological monitoring and assessment of the G...

STEEL ERECTION. View of downstream of bridge, looking southeast from ...

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

STEEL ERECTION. View of downstream of bridge, looking southeast from confluence of Trinity and South Fork Trinity rivers. The old suspension bridge is in background - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

Surficial geologic map of the Framingham quadrangle, Middlesex and Worcester Counties, Massachusetts

USGS Publications Warehouse

Nelson, Arthur E.

1974-01-01

With the exception of a small part of the southeast corner, which is drained by the Charles River, the quadrangle is drained by the Sudbury River, whose waters eventually flow into the Merrimack River in the northeast part of the state.

USING ABIOTIC INDICATORS OF REFERENCE CONDITION AND BIOTIC INDICATORS OF CONDITION TO ASSESS GREAT RIVER ECOSYSTEMS

EPA Science Inventory

This presentation outlines the approach and preliminary assessment results for EMAP-GRE. The use of biological indicators and reference conditions for river assessments has implications for scientists, river managers, and state and tribal natural resource regulators.

Flood characteristics for the New River in the New River Gorge National River, West Virginia

USGS Publications Warehouse

Wiley, J.B.; Cunningham, M.K.

1994-01-01

The frequency and magnitude of flooding of the New River in the New River Gorge National River was studied. A steady-state, one-dimensional flow model was applied to the study reach. Rating curves, cross sections, and Manning's roughness coefficients that were used are presented in this report. Manning's roughness coefficients were evaluated by comparing computed elevations (from application of the steady-state, one-dimensional flow model) to rated elevations at U.S. Geological Survey (USGS) streamflow-gaging stations and miscellaneous-rating sites. Manning's roughness coefficients ranged from 0.030 to 0.075 and varied with hydraulic depth. The 2-, 25-, and 100-year flood discharges were esti- mated on the basis of information from flood- insurance studies of Summers County, Fayette County, and the city of Hinton, and flood-frequency analysis of discharge records for the USGS streamflow-gaging stations at Hinton and Thurmond. The 100-year discharge ranged from 107,000 cubic feet per second at Hinton to 150,000 cubic feet per second at Fayette.

Navigability Potential of Washington Rivers and Streams Determined with Hydraulic Geometry and a Geographic Information System

USGS Publications Warehouse

Magirl, Christopher S.; Olsen, Theresa D.

2009-01-01

Using discharge and channel geometry measurements from U.S. Geological Survey streamflow-gaging stations and data from a geographic information system, regression relations were derived to predict river depth, top width, and bottom width as a function of mean annual discharge for rivers in the State of Washington. A new technique also was proposed to determine bottom width in channels, a parameter that has received relatively little attention in the geomorphology literature. These regression equations, when combined with estimates of mean annual discharge available in the National Hydrography Dataset, enabled the prediction of hydraulic geometry for any stream or river in the State of Washington. Predictions of hydraulic geometry can then be compared to thresholds established by the Washington State Department of Natural Resources to determine navigability potential of rivers. Rivers with a mean annual discharge of 1,660 cubic feet per second or greater are 'probably navigable' and rivers with a mean annual discharge of 360 cubic feet per second or less are 'probably not navigable'. Variance in the dataset, however, leads to a relatively wide range of prediction intervals. For example, although the predicted hydraulic depth at a mean annual discharge of 1,660 cubic feet per second is 3.5 feet, 90-percent prediction intervals indicate that the actual hydraulic depth may range from 1.8 to 7.0 feet. This methodology does not determine navigability - a legal concept determined by federal common law - instead, this methodology is a tool for predicting channel depth, top width, and bottom width for rivers and streams in Washington.

Recapitalization and Acquisition of Light Tactical Wheeled Vehicles (REDACTED)

DTIC Science & Technology

2010-01-29

representative from Red River Army Depot in Texarkana , Texas,18 stated that recapitalizing current HMMWVs to the XM1166 model was an excellent proposition...Red River Army Depot in Texarkana , Texas, stated that recapitalizing current HMMWVs to the XM1166 model was an excellent proposition. The Deputy...Army Depot in Texarkana , Texas, stated that recapitalizing current HMMWVs to the XM1166 model was an excellent proposition because the U.S

An Exploration of the Wider Costs of the Decision by the Rivers State Government in Nigeria to Revoke International Students' Scholarships

ERIC Educational Resources Information Center

Achinewhu-Nworgu, Elizabeth; Nworgu, Queen Chioma

2016-01-01

In a move intended to cut costs to the state, the government of Rivers State has announced that it is revoking international scholarships for its young people studying overseas (except for final year students). Whether or not there are corresponding courses available for them back in Nigeria, some 600 students are effectively being recalled and…

Reality of delusion: migrant perception of levels of living and opportunity in Venezuela, 1961-1971.

PubMed

Eastwood, D A

1983-07-01

To facilitate comparison of how well migrant perceptions may have accorded with reality and of the effects of that migration between 1961-71 may have had on relative regional development in Venezuela, a composite index based on state census data must be constructed by which the country's overall levels of living and social well being can be examined. The index constructed was loosely based on a range of variables suggested by Knox, but with the specific selected variables restricted by those data available in the Venezuelan censuses and other institutional reports. 20 variables were selected. Using these variables, a composite index of levels of living and social well being was constructed. The resultant index (S scores) for each state in 1971 appear in a table and a figure. These S scores demonstrated the relatively higher levels of living in the northern core area around Caracas, with S scores of over 200 in the Federal District and Miranda State. Ripple effects from the northern core also produced high scores in Aragua and Caraboba states. Secondary centers of relative prosperity were Zulia in the west and Bolivar in the east. The traditional Andean population centers in Tachira and Merida also scored positively. In contrast low S scores were found in a central belt of rural states. Lowest scores of all were in the states of Apure and Barinas, isolated on the southern margins of the central belt. Overall, the 1971 S scores decreased as distance from Caracas increased and clearly illustrated Venezuela's acute core/periphery imbalance. Despite the very substantial migration throughout the 1961-71 period, with only minor exceptions, the level of living pattern was essentially static, as a comparison of 1961 and 1971 reveals. Only the states of Bolivar (because of Guayanese industrial growth) and Nueva Esparata (because of its designation as a free port) showed significant 1961-71 improvement in state rankings; only Cojedes and Falcon (for unknown reasons) had significant decline. S scores clearly remained higher in the less rural states. In general, the majority of migration was toward those states with the higher S scores, and the high S scores correlated strongly and positively with net 1961-71 migration. The broad migrant perception of where potentially better overall conditions were likely to be found appeared to be largely accurate. When this overall picture was reduced to specific variables, the reality of migrant perception became less clear. Migrants tended to move not only to where wages were higher but also to where unemployment was higher.

Flood of August 24–25, 2016, Upper Iowa River and Turkey River, northeastern Iowa

USGS Publications Warehouse

Linhart, S. Mike; O'Shea, Padraic S.

2018-02-05

Major flooding occurred August 24–25, 2016, in the Upper Iowa River Basin and Turkey River Basin in northeastern Iowa following severe thunderstorm activity over the region. About 8 inches of rain were recorded for the 24-hour period ending at 4 p.m., August 24, at Decorah, Iowa, and about 6 inches of rain were recorded for the 24-hour period ending at 7 a.m., August 24, at Cresco, Iowa, about 14 miles northwest of Spillville, Iowa. A maximum peak-of-record discharge of 38,000 cubic feet per second in the Upper Iowa River at streamgage 05388250 Upper Iowa River near Dorchester, Iowa, occurred on August 24, 2016, with an annual exceedance-probability range of 0.2–1 percent. High-water marks were measured at six locations along the Upper Iowa River between State Highway 26 near the mouth at the Mississippi River and State Highway 76 about 3.5 miles south of Dorchester, Iowa, a distance of 15 river miles. Along the profiled reach of the Turkey River, a maximum peak-of-record discharge of 15,300 cubic feet per second at streamgage 05411600 Turkey River at Spillville, Iowa, occurred on August 24, 2016, with an annual exceedance-probability range of 1–2 percent. A maximum peak discharge of 35,700 cubic feet per second occurred on August 25, 2016, along the profiled reach of the Turkey River at streamgage 05411850 Turkey River near Eldorado, Iowa, with an annual exceedance-probability range of 0.2–1 percent. High-water marks were measured at 11 locations along the Turkey River between County Road B64 in Elgin and 220th Street, located about 4.5 miles northwest of Spillville, Iowa, a distance of 58 river miles. The high-water marks were used to develop flood profiles for the Upper Iowa River and Turkey River.

33 CFR 117.899 - Youngs Bay and Lewis and Clark River.

Code of Federal Regulations, 2014 CFR

2014-07-01

... SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.899 Youngs Bay and... blast. (b) The draw of the Oregon State (Old Youngs Bay) highway bridge, mile 2.4, across Youngs Bay... of the Oregon State (Lewis and Clark River) highway bridge, mile 1.0, across the Lewis and Clark...

33 CFR 117.899 - Youngs Bay and Lewis and Clark River.

Code of Federal Regulations, 2012 CFR

2012-07-01

... SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.899 Youngs Bay and... blast. (b) The draw of the Oregon State (Old Youngs Bay) highway bridge, mile 2.4, across Youngs Bay... of the Oregon State (Lewis and Clark River) highway bridge, mile 1.0, across the Lewis and Clark...

33 CFR 117.899 - Youngs Bay and Lewis and Clark River.

Code of Federal Regulations, 2013 CFR

2013-07-01

... SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.899 Youngs Bay and... blast. (b) The draw of the Oregon State (Old Youngs Bay) highway bridge, mile 2.4, across Youngs Bay... of the Oregon State (Lewis and Clark River) highway bridge, mile 1.0, across the Lewis and Clark...

Analysis of stated preference survey data for river-crossing travel behavior in the Portland/Vancouver metropolitan area

DOT National Transportation Integrated Search

1997-01-01

The MPO in the Southwest Washington and Oregon initiated a major activity and travel behavior survey from the Spring of 1994 to the Fall 1994, including the Stated Preference survey for river-crossing trip behavior. The purpose of the survey is to ga...

Bottomland oak afforestation in the lower Mississippi

Treesearch

Emile S. Gardiner; Brian Roy Lockhard

2007-01-01

The 11 million hectare Lower Mississippi Alluvial Valley (LMAV), which is the geologic floodplain of the lower Mississippi River, is a prominent physiographic region in the southern United States. Seven states (Arkansas, Louisiana, Missis- 1 sippi, Missouri, Kentucky, Illinois, and Tennessee) border the lower stretch of the II River, and have a portion of their land...

MERCURY CONCENTRATION IN FISH FROM STREAMS AND RIVERS THROUGHOUT THE WESTERN UNITED STATES

EPA Science Inventory

We collected and analyzed 2,707 large fish from 626 stream/river sites in 12 western U.S. states using a probability design to assess the regional distribution of whole fish mercury (Hg) concentrations. Large (>120 mm total length) fish Hg levels were strongly related to both fis...

Site Guide to Connetquot River State Park. Revised.

ERIC Educational Resources Information Center

Palma, Alfred J.

The clean and plentiful waters of the Connetquot basin's ponds, streams and marshlands have nurtured an extraordinarily rich ecosystem which has always been prized by both Native Americans and subsequent immigrants to this country. Since 1973, 3,476 acres have been preserved as Connetquot River State Park. To aid elementary and secondary teachers…

The surface water register: an empirically improved sample frame for monitoring the rivers and streams of Kansas

EPA Science Inventory

State-wide monitoring based on probability survey designs requires a spatially explicit representation of all streams and rivers of interest within a state, i.e., a sample frame. The sample frame should be the best available map representation of the resource. Many stream progr...

Entrepreneurial Training Needs of Illiterate Women in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ingwu, Emmanuel U.; Okey, Stella-Maris A.

2013-01-01

In order to improve on the curriculum and participation rate of adult learners in the current Adult Basic Education (ABE) program in Nigeria, this explorative study investigated the entrepreneurial (or vocational) training needs of illiterate women in Cross River State (CRS). Three research questions were posed to elicit from the participants…

VALUING ACID MINE DRAINAGE REMEDIATION IN WEST VIRGINIA: A HEDONIC MODELING APPROACH INCORPORATING GEOGRAPHIC INFORMATION SYSTEMS

EPA Science Inventory

States with active and abandoned mines face large private and public costs to remediate damage to streams and rivers from acid mine drainage (AMD). Appalachian states have an especially large number of contaminated streams and rivers, and the USGS places AMD as the primary source...

The Cauvery river basin in southern India: major challenges and possible solutions in the 21st century.

PubMed

Vanham, D; Weingartner, R; Rauch, W

2011-01-01

India is facing major challenges in its water resources management (WRM) sector. Water shortages are attributed to issues such as an explosion in population, rapid urbanization and industrialization, environmental degradation and inefficient water use, all aggravated by changing climate and its impacts on demand, supply and water quality. This paper focuses on the contemporary and future situation in the Cauvery river basin in Southern India, shared by different states, predominantly Karnataka and Tamil Nadu. As water issues largely fall under the authority of the states, inter-state water disputes have a long tradition in the Cauvery river basin. Future changes in precipitation during the two monsoon seasons will only increase these tensions. Both states depend on the arrival of these monsoon rains to water their crops and to replenish the groundwater. The paper identifies the major challenges and general possible solutions for sustainable WRM within the river basin. It synthesises the relevant literature, describes practices that should be addressed in the scope of integrated WRM--including water availability increase and demand management--and stresses the need for further quantitative analyses.

2. 'SANTA ANA RIVER AT CHINO CREEK, RIVERSIDE COUNTY.' This ...

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

2. 'SANTA ANA RIVER AT CHINO CREEK, RIVERSIDE COUNTY.' This is an oblique aerial view to the north, looking over the flooded fields between Chino Creek and the Santa Ana River, just upstream of the Prado Dam site. File number written on negative: R & H 80 024. - Prado Dam, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

Liberated rivers: lessons from 40 years of dam removal

Treesearch

Marie Oliver; Gordon Grant

2017-01-01

In recent decades, dam removal has emerged as a viable national and international strategy for river restoration. According to American Rivers, a river conservation organization, more than 1,100 dams have been removed in the United States in the past 40 years, and more than half of these were demolished in the past decade. This trend is likely to continue as dams age,...

Red tree voles in the Columbia River Gorge and Hood River basin, Oregon

Treesearch

Eric D. Forsman; James K. Swingle; Michael A. McDonald; Scott A. Graham; Nicholas R. Hatch

2009-01-01

In 2003 to 2008, we conducted surveys to document the eastern and northern range limits of red tree voles (Arborimus longicaudus) in the Columbia River Gorge and Hood River basin, Oregon. Our survey indicated the current range of the vole includes the area from Wahkeena Creek, 20 km east of Troutdale to Seneca Fouts State Park, 6 km west of Hood...

Groundwater controls on river channel pattern

NASA Astrophysics Data System (ADS)

Bätz, Nico; Colombini, Pauline; Cherubini, Paolo; Lane, Stuart N.

2017-04-01

Braided rivers are characterized by high rates of morphological change. However, despite the potential for frequent disturbance, vegetated patches may develop within this system and influence long-term channel dynamics and channel patterns through the "engineering effects" of vegetation. The stabilizing effect of developing vegetation on morphological change has been widely shown by flume experiments and (historic) aerial pictures analysis. Thus, there is a balance between disturbance and stabilization, mediated through vegetation, that may determine the long-term geomorphic and biogeomorphic evolution of the river. It follows that with a change in disturbance frequency relative to the rate of vegetation establishment, a systematic geomorphological shift could occur. Research has addressed how changes in disturbance frequency affect river channel pattern, but has rarely addressed the way in which the stabilizing effects of biogeomorphic succession interact with disturbance frequency to maintain a river in a more dynamic or a less dynamic state. Here, we quantify how the interplay between groundwater access, disturbance frequency and vegetation succession, drive changes in channel pattern. We studied this complex interplay on a transitional gravel-bed river system (braided, wandering, meandering) close to Geneva (Switzerland) - the Allondon River. Dendroecological analysis demonstrate that vegetation growth is driven by groundwater access. Groundwater access conditions the rate of vegetation stabilization at the sub-reach scale and, due to a reduction in flood-related disturbance frequency over the last 50 years, drives a change in channel pattern. Where groundwater is shallower, vegetation encroachment rates were high and as flood-related disturbance decreased, the river has shifted towards a meandering state. Where groundwater was deeper, vegetation growth was limited by water-access and thus vegetation encroachment rates were low. Even though there was a reduction in flood disturbance, it was still sufficient to maintain a wandering/braided state. Thus, it appears that access to groundwater can control river channel pattern through its impact upon the "engineering effects" of vegetation. The results are important for river management as they highlight the non-linearity of developing vegetation in dynamic alluvial floodplains and the importance of considering the wider environmental setting and associated feedbacks between biotic and abiotic river components in defining long-term geomorphological river response.

Impact of proposed Washington State water quality standards on Hanford

DOE Office of Scientific and Technical Information (OSTI.GOV)

Corley, J.P.; Selby, J.M.

1967-11-03

The proposed regulation relating to Water Quality Standards for Interstate and Coastal Waters of the State of Washington contains eight standards. Standards are established for Total Coliform Organisms, Dissolved Oxygen, Temperature, Radioactivity, pH, Turbidity, Toxic or Deleterious Material, and Aesthetic Values. The Columbia River from the Washington-Oregon border to Priest Rapids is designated as class A water. Additionally, special temperature requirements are defined for this reach of the river. This report reviews the measured and projected conditions in this reach of the river in relation to these standards. 4 figs.

Columbia-North Pacific Region Comprehensive Framework Study of Water and Related Lands. Appendix I. History of Study

DTIC Science & Technology

1971-12-01

NORTHWEST, R[6~ BASINS COMMIS$ION 1 COLUMBIA RIVER , VANCOUVER, WASHINGTON DECEMBER 1971 PARTICIPATING STATES AND AGENCIES STATES Idaho Nevada Utah Wyoming...G.. ......al H~~~~~s ../....h G.E..n.at. ~J$~ I 314S ~ leCts AVAL SO1IU 1 ppjcoved imP Pacific Submitted by 4-. PcificNorthwest River Basins...Commissions Vancouver, Washington 77𔄁’ -, Prepared by Columbia-North Pacific Technical Staff: ’E. L. White, Pacific Northwest River Basins Commission G. J

33 CFR 117.873 - Coos River.

Code of Federal Regulations, 2013 CFR

2013-07-01

... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Coos River. 117.873 Section 117.873 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.873 Coos River. The draw of the Oregon State...

33 CFR 117.873 - Coos River.

Code of Federal Regulations, 2014 CFR

2014-07-01

... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Coos River. 117.873 Section 117.873 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.873 Coos River. The draw of the Oregon State...

33 CFR 117.873 - Coos River.

Code of Federal Regulations, 2012 CFR

2012-07-01

... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Coos River. 117.873 Section 117.873 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.873 Coos River. The draw of the Oregon State...

33 CFR 117.873 - Coos River.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Coos River. 117.873 Section 117.873 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.873 Coos River. The draw of the Oregon State...

33 CFR 117.873 - Coos River.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Coos River. 117.873 Section 117.873 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.873 Coos River. The draw of the Oregon State...

Managing the Columbia Basin for Sustainable Economy, Society, Environment

EPA Science Inventory

The Columbia River Basin (CRB) is a vast region of the Pacific Northwest covering parts of the United States, Canada and Tribal lands. As the Columbia River winds its way from Canada into the US, the river passes through numerous multi-purpose reservoirs and hydroelectric genera...

OLD SUSPENSION BRIDGE. This view appears to be looking southeast, ...

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

OLD SUSPENSION BRIDGE. This view appears to be looking southeast, at the downstream side of the suspension bridge, which was replaced by the South Fork Trinity River Bridge - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

HOME ON THE BIG RIVER: ASSESSING HABITAT CONDITION IN THE GREAT RIVERS OF THE CENTRAL UNITED STATES

EPA Science Inventory

The Great Rivers of the mid-North American continent are important human recreational destinations and transportation corridors, and represent significant habitat. Riparian and instream habitat measures are needed to fully characterize these waterbodies and diagnose causes of de...

Lessons learned from the USEPA Environmental Monitoring and Assessment Program for Great River Ecosystems

EPA Science Inventory

We assessed the North American mid-continent great rivers (Upper Mississippi, Missouri, and Ohio). We estimated the extent of each river in most (MDC) or least-disturbed condition (LDC) based on multiple biological response indicators (fish and macroinvertebrates, trophic state ...

39. PENCIL SKETCH OF SELECTED DESIGN, DEPICTING OCEANGOING VESSEL (WHICH ...

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

39. PENCIL SKETCH OF SELECTED DESIGN, DEPICTING OCEAN-GOING VESSEL (WHICH WERE STILL NAVIGATING SACRAMENTO RIVER IN 1930s) APPROACHING LIFT SPAN Drawn by project architect Alfred Eichler, 1935 - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

Turbulent forces within river plumes affect spread

NASA Astrophysics Data System (ADS)

Bhattacharya, Atreyee

2012-08-01

When rivers drain into oceans through narrow mouths, hydraulic forces squeeze the river water into buoyant plumes that are clearly visible in satellite images. Worldwide, river plumes not only disperse freshwater, sediments, and nutrients but also spread pollutants and organisms from estuaries into the open ocean. In the United States, the Columbia River—the largest river by volume draining into the Pacific Ocean from North America—generates a plume at its mouth that transports juvenile salmon and other fish into the ocean. Clearly, the behavior and spread of river plumes, such as the Columbia River plume, affect the nation's fishing industry as well as the global economy.

Assessment of historical surface-water quality data in southwestern Colorado, 1990-2005

USGS Publications Warehouse

Miller, Lisa D.; Schaffrath, Keelin R.; Linard, Joshua I.

2013-01-01

The spatial and temporal distribution of selected physical and chemical surface-water-quality characteristics were analyzed at stream sites throughout the Dolores and San Juan River Basins in southwestern Colorado using historical data collected from 1990 through 2005 by various local, State, Tribal, and Federal agencies. Overall, streams throughout the study area were well oxygenated. Values of pH generally were near neutral to slightly alkaline throughout most of the study area with the exception of the upper Animas River Basin near Silverton where acidic conditions existed at some sites because of hydrothermal alteration and(or) historical mining. The highest concentrations of dissolved aluminum, total recoverable iron, dissolved lead, and dissolved zinc were measured at sites located in the upper Animas River Basin. Thirty-two sites throughout the study area had at least one measured concentration of total mercury that exceeded the State chronic aquatic-life criterion of 0.01 μg/L. Concentrations of dissolved selenium at some sites exceeded the State chronic water-quality standard of 4.6 μg/L. Total ammonia, nitrate, nitrite, and total phosphorus concentrations generally were low throughout the study area. Overall, results from the trend analyses indicated improvement in water-quality conditions as a result of operation of the Paradox Valley Unit in the Dolores River Basin and irrigation and water-delivery system improvements made in the McElmo Creek Basin (Lower San Juan River Basin) and Mancos River Valley (Upper San Juan River Basin).

River flow changes related to land and water management practices across the conterminous United States

USGS Publications Warehouse

Eng, Ken; Wolock, David M.; Carlisle, Daren M.

2013-01-01

The effects of land and water management practices (LWMP)—such as the construction of dams and roads—on river flows typically have been studied at the scale of single river watersheds or for a single type of LWMP. For the most part, assessments of the relative effects of multiple LWMP within many river watersheds across regional and national scales have been lacking. This study assesses flow alteration—quantified as deviation of several flow metrics from natural conditions—at 4196 gauged rivers affected by a variety of LWMP across the conterminous United States. The most widespread causes of flow changes among the LWMP considered were road density and dams. Agricultural development and wastewater discharges also were associated with flow changes in some regions. Dams generally reduced most attributes of flow, whereas road density, agriculture and wastewater discharges tended to be associated with increased flows compared to their natural condition.

Processed 1938 aerial photography for selected areas of the lower Colorado River, southwestern United States

USGS Publications Warehouse

Norman, Laura M.; Gishey, Michael; Gass, Leila; Yanites, Brian; Pfeifer, Edwin; Simms, Ron; Ahlbrandt, Ray

2006-01-01

The U.S. Geological Survey (USGS) initiated a study of the Lower Colorado River to derive temporal-change characteristics from the predam period to the present. In this report, we present summary information on accomplishments under a USGS task for the Department of the Interior's Landscapes in the West project. We discuss our preliminary results in compiling a digital database of geospatial information on the Lower Colorado River and acquisition of data products, and present a geospatial digital dataset of 1938 aerial photography of the river valley. The U.S. Bureau of Reclamation (BOR)'s, Resources Management Office in Boulder City, Nev., provided historical aerial photographs of the river valley from the Hoover Dam to the United States-Mexican border, with some exclusions. USGS authors scanned and mosaicked the photographs, registered the photo mosaics, and created metadata describing each mosaic series, all 15 of which are presented here.

Trace metal contents of selected seeds and vegetables from oil producing areas of Nigeria.

PubMed

Wegwu, Matthew O; Omeodu, Stephen I

2010-07-01

The concentrations of accumulated trace metals in selected seeds and vegetables collected in the oil producing Rivers State of Nigeria were investigated. The values were compared with those of seeds and vegetables cultivated in Owerri, a less industrialized area in Nigeria. The lead (Pb) and cadmium (Cd) contents of the seeds obtained from Rivers State ranged between 0.10 and 0.23 microg/g dry weight, while those of the seeds cultivated in Owerri fell below the detection limit of 0.01 microg/g dry weight. The highest manganese (Mn) level (902 microg/g dry weight) was found in Irvingia garbonesis seeds cultivated in Rivers State. Similarly, the highest nickel (Ni) value (199 microg/g dry weight) was also obtained in I. garbonesis, however, in the seeds sampled in Owerri. The highest copper (Cu), zinc (Zn), and iron (Fe) levels (16.8, 5.27, and 26.2 microg/g dry weight, resp.) were detected in seeds collected in Rivers State. With the exception of Talinum triangulae, Ocinum gratissimum, and Piper guineese, with Pb levels of 0.09, 0.10, and 0.11 microg/g dry weight, respectively, the Pb and Cd levels in the vegetables grown in Owerri fell below the detection limit of 0.01 microg/g dry weight. The trace metal with the highest levels in all the vegetables studied was Mn, followed by Fe. The highest concentrations of Ni and Cu occurred in vegetables collected from Rivers State, while the highest level of Zn was observed in Piper guineese collected in Owerri, with a value of 21.4 microg/g dry weight. Although the trace metal concentrations of the seeds and vegetables collected in Rivers State tended to be higher than those of the seeds and vegetables grown in Owerri, the average levels of trace metals obtained in this study fell far below the WHO specifications for metals in foods.

Accumulated state assessment of the Peace-Athabasca-Slave River system.

PubMed

Dubé, Monique G; Wilson, Julie E

2013-07-01

Effects-based analysis is a fundamental component of watershed cumulative effects assessment. This study conducted an effects-based analysis for the Peace-Athabasca-Slave River System, part of the massive Mackenzie River Basin, encompassing 20% of Canada's total land mass and influenced by cumulative contributions of the W.A.C. Bennett Dam (Peace River) and industrial activities including oil sands mining (Athabasca River). This study assessed seasonal changes in 1) Peace River water quality and quantity before and after dam development, 2) Athabasca River water quality and quantity before and after oil sands developments, 3) tributary inputs from the Peace and Athabasca Rivers to the Slave River, and 4) upstream to downstream differences in water quality in the Slave River. In addition, seasonal benchmarks were calculated for each river based on pre-perturbation post-perturbation data for future cumulative effects assessments. Winter discharge (January-March) from the Peace and Slave Rivers was significantly higher than before dam construction (pre-1967) (p < 0.05), whereas summer peak flows (May-July) were significantly lower than before the dam showing that regulation has significantly altered seasonal flow regimes. During spring freshet and summer high flows, the Peace River strongly influenced the quality of the Slave River, as there were no significant differences in loadings of dissolved N, total P (TP), total organic C (TOC), total As, total Mn, total V, and turbidity and specific conductance between these rivers. In the Athabasca River, TP and specific conductance concentrations increased significantly since before oil sands developments (1967-2010), whereas dissolved N and sulfate have increased after the oil sands developments (1977-2010). Recently, the Athabasca River had significantly higher concentrations of dissolved N, TP, TOC, dissolved sulfate, specific conductance, and total Mn than either the Slave or the Peace Rivers during the winter months. The transboundary nature of the Peace, Athabasca, and Slave River basins has resulted in fragmented monitoring and reporting of the state of these rivers, and a more consistent monitoring framework is recommended. Copyright © 2012 SETAC.

mizuRoute version 1: A river network routing tool for a continental domain water resources applications

USGS Publications Warehouse

Mizukami, Naoki; Clark, Martyn P.; Sampson, Kevin; Nijssen, Bart; Mao, Yixin; McMillan, Hilary; Viger, Roland; Markstrom, Steven; Hay, Lauren E.; Woods, Ross; Arnold, Jeffrey R.; Brekke, Levi D.

2016-01-01

This paper describes the first version of a stand-alone runoff routing tool, mizuRoute. The mizuRoute tool post-processes runoff outputs from any distributed hydrologic model or land surface model to produce spatially distributed streamflow at various spatial scales from headwater basins to continental-wide river systems. The tool can utilize both traditional grid-based river network and vector-based river network data. Both types of river network include river segment lines and the associated drainage basin polygons, but the vector-based river network can represent finer-scale river lines than the grid-based network. Streamflow estimates at any desired location in the river network can be easily extracted from the output of mizuRoute. The routing process is simulated as two separate steps. First, hillslope routing is performed with a gamma-distribution-based unit-hydrograph to transport runoff from a hillslope to a catchment outlet. The second step is river channel routing, which is performed with one of two routing scheme options: (1) a kinematic wave tracking (KWT) routing procedure; and (2) an impulse response function – unit-hydrograph (IRF-UH) routing procedure. The mizuRoute tool also includes scripts (python, NetCDF operators) to pre-process spatial river network data. This paper demonstrates mizuRoute's capabilities to produce spatially distributed streamflow simulations based on river networks from the United States Geological Survey (USGS) Geospatial Fabric (GF) data set in which over 54 000 river segments and their contributing areas are mapped across the contiguous United States (CONUS). A brief analysis of model parameter sensitivity is also provided. The mizuRoute tool can assist model-based water resources assessments including studies of the impacts of climate change on streamflow.

CONAMINANT EXPOSURE, BIOCHEMICAL, AND HISTOPATHOLOGICAL BIOMARKERS IN WHITE SUCKERS FROM CONTAMINATED AND REFERENCE SITES IN THE SHEBOYGAN RIVER, WISCONSIN

EPA Science Inventory

Fish populations of the lower Sheboygan River, located in east-central Wisconsin, are considered impaired under the Great Lakes Water Qualtiy Agreement between the United States and Canada. Pollutants in the Sheboygan River system include: polychlorinated biphenyls (PCBs), polycy...

CONTAMINANT EXPOSURE, BIOCHEMICAL, AND HISTOPATHOLOGICAL BIOMARKERS IN WHITE SUCKERS FROM CONTAMINATED AND REFERENCE SITES IN THE SHEBOYGAN RIVER, WISCONSIN

EPA Science Inventory

Fish populations of the lower Sheboygan River, located in east-central Wisconsin, are considered impaired under the Great Lakes Water Quality Agreement between the United States and Canada.Pollutants in the Sheboygan River system include: polychlorinated biphenyls (PCBs), polycyc...

33 CFR 72.05-1 - Purpose.

Code of Federal Regulations, 2014 CFR

2014-07-01

..., with the exception of Volume V, which is published biennially, covering the waters of the United States... River, South Carolina. (3) Volume III, Atlantic and Gulf Coasts, from Little River, South Carolina, to Econfina River, Florida, including Puerto Rico and the U.S. Virgin Islands. (4) Volume IV, Gulf of Mexico...

33 CFR 72.05-1 - Purpose.

Code of Federal Regulations, 2012 CFR

2012-07-01

..., with the exception of Volume V, which is published biennially, covering the waters of the United States... River, South Carolina. (3) Volume III, Atlantic and Gulf Coasts, from Little River, South Carolina, to Econfina River, Florida, including Puerto Rico and the U.S. Virgin Islands. (4) Volume IV, Gulf of Mexico...

33 CFR 72.05-1 - Purpose.

Code of Federal Regulations, 2013 CFR

2013-07-01

..., with the exception of Volume V, which is published biennially, covering the waters of the United States... River, South Carolina. (3) Volume III, Atlantic and Gulf Coasts, from Little River, South Carolina, to Econfina River, Florida, including Puerto Rico and the U.S. Virgin Islands. (4) Volume IV, Gulf of Mexico...

27 CFR 9.60 - Shenandoah Valley.

Code of Federal Regulations, 2013 CFR

2013-04-01

... boundary line starts at the point of the intersection of the Potomac River and the Virginia-West Virginia... Little North Mountain to its intersection with the Potomac River in Fort Frederick State Park. (13) Then the boundary continues approximately 47.4 miles southeasterly along the Potomac River to the beginning...

27 CFR 9.60 - Shenandoah Valley.

Code of Federal Regulations, 2011 CFR

2011-04-01

... boundary line starts at the point of the intersection of the Potomac River and the Virginia-West Virginia... Little North Mountain to its intersection with the Potomac River in Fort Frederick State Park. (13) Then the boundary continues approximately 47.4 miles southeasterly along the Potomac River to the beginning...

27 CFR 9.60 - Shenandoah Valley.

Code of Federal Regulations, 2014 CFR

2014-04-01

... boundary line starts at the point of the intersection of the Potomac River and the Virginia-West Virginia... Little North Mountain to its intersection with the Potomac River in Fort Frederick State Park. (13) Then the boundary continues approximately 47.4 miles southeasterly along the Potomac River to the beginning...

27 CFR 9.60 - Shenandoah Valley.

Code of Federal Regulations, 2010 CFR

2010-04-01

... boundary line starts at the point of the intersection of the Potomac River and the Virginia-West Virginia... Little North Mountain to its intersection with the Potomac River in Fort Frederick State Park. (13) Then the boundary continues approximately 47.4 miles southeasterly along the Potomac River to the beginning...

27 CFR 9.60 - Shenandoah Valley.

Code of Federal Regulations, 2012 CFR

2012-04-01

... boundary line starts at the point of the intersection of the Potomac River and the Virginia-West Virginia... Little North Mountain to its intersection with the Potomac River in Fort Frederick State Park. (13) Then the boundary continues approximately 47.4 miles southeasterly along the Potomac River to the beginning...

Aftermath. The remains of the southwest end of the bridge ...

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

Aftermath. The remains of the southwest end of the bridge lie next to the southwest pier. View is south-southeast from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

With water still in midflight, the northeast end of the ...

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

With water still in mid-flight, the northeast end of the bridge (left) nears total collapse. View is to southeast from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

Littoral and Shoreline Wood in Mid-continent Great Rivers (USA)

EPA Science Inventory

Less is known about the ecology of wood in great rivers than in smaller lotic systems. We used a probability survey to estimate the abundance of littoral and shoreline wood along the mid-continent great rivers of the United States: the Missouri, Upper Mississippi, and the Ohio Ri...

43 CFR 8351.2-1 - Special rules.

Code of Federal Regulations, 2013 CFR

2013-10-01

... of the National Wild and Scenic River System when necessary to carry out the intent of the Wild and... lessees of property within the boundaries of the designated wild and scenic river area. (3) Residents within the boundaries of the designated wild and scenic river area. (4) Any Federal, State, or local...

43 CFR 8351.2-1 - Special rules.

Code of Federal Regulations, 2012 CFR

2012-10-01

... of the National Wild and Scenic River System when necessary to carry out the intent of the Wild and... lessees of property within the boundaries of the designated wild and scenic river area. (3) Residents within the boundaries of the designated wild and scenic river area. (4) Any Federal, State, or local...

43 CFR 8351.2-1 - Special rules.

Code of Federal Regulations, 2014 CFR

2014-10-01

... of the National Wild and Scenic River System when necessary to carry out the intent of the Wild and... lessees of property within the boundaries of the designated wild and scenic river area. (3) Residents within the boundaries of the designated wild and scenic river area. (4) Any Federal, State, or local...

43 CFR 8351.2-1 - Special rules.

Code of Federal Regulations, 2011 CFR

2011-10-01

... of the National Wild and Scenic River System when necessary to carry out the intent of the Wild and... lessees of property within the boundaries of the designated wild and scenic river area. (3) Residents within the boundaries of the designated wild and scenic river area. (4) Any Federal, State, or local...

Spatial prediction models for the probable biological condition of streams and rivers in the USA

EPA Science Inventory

The National Rivers and Streams Assessment (NRSA) is a probability-based survey conducted by the US Environmental Protection Agency and its state and tribal partners. It provides information on the ecological condition of the rivers and streams in the conterminous USA, and the ex...

Random forest models for the probable biological condition of streams and rivers in the USA

EPA Science Inventory

The National Rivers and Streams Assessment (NRSA) is a probability based survey conducted by the US Environmental Protection Agency and its state and tribal partners. It provides information on the ecological condition of the rivers and streams in the conterminous USA, and the ex...

78 FR 16411 - Drawbridge Operation Regulations; Saugatuck River, Westport, CT

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-15

... Regulations; Saugatuck River, Westport, CT AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from regulation. SUMMARY: The United States Coast Guard has issued a temporary deviation from the regulation governing the operation of the Route 136 Bridge across the Saugatuck River, mile 1.3, at Westport...

Beyond the Transboundary River: Issues of Riparian Responsibilities

NASA Astrophysics Data System (ADS)

Parhi, P. K.; Sankhua, R. N.

2013-11-01

The issues of riparian countries sharing transboundary waters spans decades, and has been greatly strengthened by its collaboration with partner agencies. International cooperation on shared water resources is critical, especially in water scarce regions experiencing the impacts of over-consumption and pollution. Where, river basins are transboundary, this requires regular and structured consultation, coordination and cooperation among all states sharing the catchment. Rapid and unsustainable development of river basins and their wetlands has led to the disruption of natural hydrological cycles. In many cases this has resulted in greater frequency and severity of flooding, drought and pollution. Appropriate transnational planning, protection and allocation of water to wetlands are essential to avoid disaster and enable these ecosystems to continue to provide important goods and services to local communities. Integrated river basin management takes into account policies and measures for the multifunctional use of rivers on a catchment scale and associated institutional changes. The implementation of these involves a number of steps such as definition of aim, construction of conceptual model, selection of variables, comparison with selection criteria, database assessment, and indicator selection division of tasks and responsibilities for river basin management with regard to the development of indicators, data collection, and their application in decision-making. This work presents issues pertaining to the pressure to the river, the state of the river ecosystem, the impact to goods and services provided by the river, and the societal response.

Habitat availability vs. flow rate for the Pecos River, Part 1 : Depth and velocity availability.

DOE Office of Scientific and Technical Information (OSTI.GOV)

James, Scott Carlton; Schaub, Edward F.; Jepsen, Richard Alan

2004-02-01

The waters of the Pecos River in New Mexico must be delivered to three primary users: (1) The Pecos River Compact: each year a percentage of water from natural river flow must be delivered to Texas; (2) Agriculture: Carlsbad Irrigation District has a storage and diversion right and Fort Sumner Irrigation District has a direct flow diversion right; and, (3) Endangered Species Act: an as yet unspecified amount of water is to support Pecos Bluntnose Shiner Minnow habitat within and along the Pecos River. Currently, the United States Department of Interior Bureau of Reclamation, the New Mexico Interstate Stream Commission,more » and the United States Department of the Interior Fish and Wildlife Service are studying the Pecos Bluntnose Shiner Minnow habitat preference. Preliminary work by Fish and Wildlife personnel in the critical habitat suggest that water depth and water velocity are key parameters defining minnow habitat preference. However, river flows that provide adequate preferred habitat to support this species have yet to be determined. Because there is a limited amount of water in the Pecos River and its reservoirs, it is critical to allocate water efficiently such that habitat is maintained, while honoring commitments to agriculture and to the Pecos River Compact. This study identifies the relationship between Pecos River flow rates in cubic feet per second (cfs) and water depth and water velocity.« less

National wild and scenic rivers system, January 2000

USGS Publications Warehouse

,; ,; ,; ,; ,

2000-01-01

The National Wild and Scenic Rivers System was created by Congress in 1968 (Public Law 90-542; 16 U.S.C 1271 et seq.) to preserve certain rivers with outstanding natural cultural, or recreational features in a free flowing condition for enjoyment of present and future generations. As of January 2000, the National System has grown from its initial eight components to a 156-river system with representation in 37 states.

Diazinon and chlorpyrifos loads in the San Joaquin River basin, California, January and February 2000

USGS Publications Warehouse

Kratzer, Charles R.; Zamora, Celia; Knifong, Donna L.

2002-01-01

The application of diazinon and chlorpyrifos on dormant orchards in 2000 in the San Joaquin River Basin was less than 21 percent of application in 1993 and 1994. A total of 13 sites were sampled weekly during nonstorm periods and more frequently during two storm periods. The sites included five major river and eight minor tributary sites. The highest concentrations of diazinon and chlorpyrifos occurred during the storm periods. Four samples from major river sites (Tuolumne River and two San Joaquin River sites) had diazinon concentrations greater than 0.08 microgram per liter, the concentration being considered by the state of California as its criterion maximum concentration for the protection of aquatic habitat. One sample from a major river site (San Joaquin River) exceeded the equivalent State guideline of 0.02 microgram per liter for chlorpyrifos. At the eight minor tributary sites, 24 samples exceeded the diazinon guideline and four samples exceeded the chlorpyrifos guideline. The total diazinon load in the San Joaquin River near Vernalis during January and February 2000 was 19.6 pounds active ingredient; of this, 8.17 pounds active ingredient was transported during two storms. In 1994, 27.4 pounds active ingredient was transported during two storms. The total chlorpyrifos load in the San Joaquin River near Vernalis during January and February 2000 was 5.68 pounds active ingredient; of this, 2.17 pounds active ingredient was transported during the two storms. During the frequently sampled February 2000 storm, the main sources of diazinon in the San Joaquin River Basin were the San Joaquin River near Stevinson Basin (25 percent), Tuolumne River Basin (14 percent), and the Stanislaus River Basin (10 percent). The main sources of chlorpyrifos in the San Joaquin River Basin were the San Joaquin River near Stevinson Basin (17 percent), Tuolumne River Basin (13 percent), and the Merced River Basin (11 percent). The total January and February diazinon load in the San Joaquin River near Vernalis was 0.17 percent of dormant application; total January and February chlorpyrifos load was 0.16 percent of dormant application.

A numerical investigation of the impacts of river and floodplain restoration on the process of floodwave attenuation

NASA Astrophysics Data System (ADS)

Stone, M. C.; Byrne, C.; Morrison, R.

2015-12-01

It is widely recognized that past river engineering, flood control, and floodplain development activities have tended to work against nature rather than with it. The consequence in many cases has been severe degradation of our natural ecosystems. This, combined with an increased appreciation for the benefits of properly functioning ecosystems, has prompted efforts to restore rivers to a more natural state. However, most restoration projects currently focus on a narrow set of goals, such as endangered species recovery or channel stabilization. In order to shift the restoration community towards more holistic perspectives and approaches, it is necessary to improve understanding of river and floodplain hydrogeomorphic processes and their role in supporting healthy ecosystems. The goal of this research was to investigate the impacts of river engineering and restoration practices on the process of floodwave attenuation. This goal was addressed through numerical investigations that allowed us to: (1) quantify mass and momentum fluxes between river channels and floodplains; (2) investigate the influence of mass and momentum fluxes on floodwave attenuation processes; and (3) evaluate the impacts of river and floodplain restoration on floodwave attenuation. Two-dimensional hydrodynamic models were applied to the Rio Grande, San Joaquin, and Gila rivers in the Southwestern United States using novel modeling approaches to describe dynamic floodplain roughness, fluxes at channel/floodplain interfaces, and attenuation along river corridors. The results provide important insights into the role of floodplain characteristics on floodwave movement and the potential for enhancing floodwave attenuation through river restoration.

Preliminary water-quality assessment of the upper White River near Indianapolis, Marion County, Indiana

USGS Publications Warehouse

Wangsness, David J.; Eikenberry, S.E.; Wilber, W.G.; Crawford, Charles G.

1981-01-01

The White River Park Commission is planning the development of park facilities along the White River through Indianapolis, Ind. A key element in the planning is the determination of whether water quality of the river is suitable for recreation. A preliminary water-quality assessment conducted August 4-5, 1980, indicated that, during low-flow steady-state conditions, the river is suitable for partial body contact recreation (any contact with water up to, but not including complete submergence). Dissolved-oxygen concentrations varied but were higher than the Indiana water-quality standards established to ensure conditions for the maintenance of a well-balanced, warm-water fish community. High fecal-coliform densities that have been observed in the White River during high streamflow are probably caused by stormwater runoff carried by combined storm and sanitary sewers. However, during the low-flow, steady-state conditions on August 4-5, 1980, fecal-coliform densities were within the Indiana standards for partial body contact recreation. Quantities of organic matter and concentrations of nutrients and heavy metals in the White River were generally within the limits recommended by the U.S. Environmental Protection Agency and were generally similar to values for other Indiana rivers. Chromium, copper, lead, zinc, and mercury are accumulating in bottom materials downstream from 30th Street. The phytoplankton concentrations in the White River were high. The dominant phytoplankton species were indicative of rivers moderately affected by organic wastes. (USGS)

MERCURY CONCENTRATION IN FISH FROM STREAMS/RIVERS THROUGHOUT THE WESTERN UNITED STATES

EPA Science Inventory

We collected 2,707 fish from 626 stream/river sites in 12 western USA states using a probability design to assess the spatial extent of whole fish mercury (Hg) concentrations. In all large (> 120 mm) fish, Hg concentrations (mean µg¿g-1; SD) in both piscivores (0.260; 0.241) and ...

Academic Staff Utilization of Information and Communication Technology and Knowledge Creation in Cross River State Universities

ERIC Educational Resources Information Center

Ekpoh, Uduak Imo; Etor, Comfort Robert

2012-01-01

This study examined academic staff utilization of Information and Communication Technology (ICT) in knowledge creation in universities in Cross River State. The study was guided by two research questions and one hypothesis. A questionnaire was developed, validated and used for data collection from a sample of 300 academic staff. Descriptive…

Marketing Strategies and Students' Enrolment in Private Secondary Schools in Calabar Municipality, Cross River State, Nigeria

ERIC Educational Resources Information Center

Uchendu, Chika C.; Nwafor, Innocent A.; Nwaneri, Mary G.

2015-01-01

The study investigated marketing strategies and students' enrolment in private secondary schools in Calabar Municipality, Cross River State. One research question was raised and two null hypotheses formulated to guide the study. Thirty two (32) school administrators in 32 private secondary schools in the study area constitute the study population…

76 FR 23306 - Takes of Marine Mammals Incidental to Specified Activities; Russian River Estuary Management...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-04-26

... disruption of behavioral patterns, including, but not limited to, migration, breathing, nursing, breeding..., Mendocino, and Lake Counties. The mouth of the Russian River is located at Goat Rock State Beach; the... lot of Goat Rock State Park and driven onto the beach via an existing access point. Personnel on the...

77 FR 15722 - Takes of Marine Mammals Incidental to Specified Activities; Russian River Estuary Management...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-03-16

..., breeding, feeding, or sheltering [Level B harassment].'' Summary of Request NMFS received an application on... Counties. The mouth of the Russian River is located at Goat Rock State Beach (see Figure 2 of SCWA's... ``Feasibility of Alternatives to the Goat Rock State Beach Jetty for Managing Lagoon Water Surface Elevations--A...

76 FR 14924 - Takes of Marine Mammals Incidental to Specified Activities; Russian River Estuary Management...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-03-18

..., breeding, feeding, or sheltering [Level B harassment]. Summary of Request NMFS received an application on... Counties. The mouth of the Russian River is located at Goat Rock State Beach; the estuary extends from the... beach from the paved parking lot at Goat Rock State Beach, (see Figure 2 of SCWA's application), and...

Prevalence, Causes and Effects of Bullying in Tertiary Institutions in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ada, Mary Juliana; Okoli, Georgina; Obeten, Okoi Okorn; Akeke, M. N. G.

2016-01-01

This research is an evaluation of the impact of causes, consequences and effects of bullying in academic setting on student academic performance in tertiary institutions in Cross River State, Nigeria. The research made use of purposive and random sampling techniques made up of 302 students. Questionnaire served as the data collection instrument.…

The Availability and Utilization of School Library Resources in Some Selected Secondary Schools (High School) in Rivers State

ERIC Educational Resources Information Center

Owate, C. N.; Iroha, Okpa

2013-01-01

This study investigates the availability and utilization of school library resources by Secondary School (High School) Students. Eight Selected Secondary Schools in Rivers State, Nigeria were chosen based on their performance in external examinations and geographic locations. In carrying out the research, questionnaires were administered to both…

Site Guide to Nissequogue River State Park. Revised.

ERIC Educational Resources Information Center

Zero, Edward J.; Mertz, Gregory

Nissequogue River State Park is one of the last large tracts of undeveloped land on Long Island (NY) and is a refuge for organisms displaced by the rapid and extensive growth of suburbia. A reconstructed 120 year old barn and stable house the Outdoor Learning Laboratory which consists of interpretive displays (bird and mammal identification,…

An Analysis of Factors Influencing Students' Academic Performance in Public and Private Secondary Schools in Rivers State-Nigeria

ERIC Educational Resources Information Center

Kalagbor, Levi Doe

2016-01-01

The study examined factors that positively influence students' academic performance in public and private secondary schools in Rivers State-Nigeria. One research question addressed the objectives and problem of the study. The instrument used for the collection of data was the "Students' Academic Performance Questionnaire" (SAPQ),…

Teacher Factors and Perceived Assessment Practices Needs of Social Studies Teachers in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ekuri, Emmanuel Etta; Egbai, Julius Michael; Ita, Caroline Iserome

2011-01-01

This study evaluated perceived assessment practices needs among social studies teachers in Cross River State, Nigeria, in relation to some teacher factors (attitude towards social studies, sex, teaching experience and educational qualification). Subjects who participated in this study were 297 social studies teachers (144 males and 153 females)…

A Class III Cultural Resource Inventory of a Portion of the Upper Souris River Valley, North Dakota

DTIC Science & Technology

1989-03-01

E. Sully led a force from Fort Rice , near present Bismarck, to Devils Lake and then to the Souris River. Sully skirted the bottom of the Souris loop...Manning (1923), Mabel Manning (1924), Alice Wakelam (1933), Harvey Emmel (1936), State Bank of Keninare (1937), State of North Dakota (1939), William

Relative importance of wastewater treatment plants and non-point sources of perfluorinated compounds to Washington State rivers.

PubMed

Furl, Chad V; Meredith, Callie A; Strynar, Mark J; Nakayama, Shoji F

2011-07-01

Perfluorinated compounds (PFCs) were measured in 10 Washington State rivers and 4 wastewater treatment plants (WWTPs) under periods of low and high flows to investigate the relative importance of point and non-point sources to rivers. PFCs were detected in all samples with summed values ranging from 1.11 to 74.9 ng/L in surface waters and 62.3-418 ng/L in WWTP effluent. Concentrations in 6 of the 10 rivers exhibited a positive relationship with flow, indicating runoff as a contributing source, with PFC loads greatest at all 10 waterbodies during high flows. Perfluoroheptanoic acid:perfluorooctanoic acid homologue ratios suggest atmospheric contributions to the waterbodies are important throughout the year. Principal component analysis (PCA) indicated distinct homologue profiles for high flow, low flow, and effluent samples. The PCA demonstrates that during the spring when flows and loads are at their greatest; WWTP discharges are not the primary sources of PFCs to the river systems. Taken together, the evidence provided signifies non-point inputs are a major pathway for PFCs to surface waters in Washington State. Copyright © 2011 Elsevier B.V. All rights reserved.

Predicting the likelihood of altered streamflows at ungauged rivers across the conterminous United States

USGS Publications Warehouse

Eng, Kenny; Carlisle, Daren M.; Wolock, David M.; Falcone, James A.

2013-01-01

An approach is presented in this study to aid water-resource managers in characterizing streamflow alteration at ungauged rivers. Such approaches can be used to take advantage of the substantial amounts of biological data collected at ungauged rivers to evaluate the potential ecological consequences of altered streamflows. National-scale random forest statistical models are developed to predict the likelihood that ungauged rivers have altered streamflows (relative to expected natural condition) for five hydrologic metrics (HMs) representing different aspects of the streamflow regime. The models use human disturbance variables, such as number of dams and road density, to predict the likelihood of streamflow alteration. For each HM, separate models are derived to predict the likelihood that the observed metric is greater than (‘inflated’) or less than (‘diminished’) natural conditions. The utility of these models is demonstrated by applying them to all river segments in the South Platte River in Colorado, USA, and for all 10-digit hydrologic units in the conterminous United States. In general, the models successfully predicted the likelihood of alteration to the five HMs at the national scale as well as in the South Platte River basin. However, the models predicting the likelihood of diminished HMs consistently outperformed models predicting inflated HMs, possibly because of fewer sites across the conterminous United States where HMs are inflated. The results of these analyses suggest that the primary predictors of altered streamflow regimes across the Nation are (i) the residence time of annual runoff held in storage in reservoirs, (ii) the degree of urbanization measured by road density and (iii) the extent of agricultural land cover in the river basin.

The investigation of chemical quality of water in tidal rivers

USGS Publications Warehouse

Keighton, Walter B.

1954-01-01

This report has been prepared for the guidance of personnel of the Water Resources Division who are engaged in water-quality investigations of tidal rivers. The study of tidal rivers is beset with many complexities not present in the investigation of non-tidal rivers. The periodic rise and fall of the tide may result in a corresponding periodic change in salinity at a sampling location on the tidal river. When the fresh water discharge is low, saline water may intrude up-river, and any factor changing the relative elevations of the ocean and the mean river level has an effect on the extent of salt-water intrusion. Variations in water composition between samples taken at several locations up or down river, at different depths, or at several locations across the stream are likely to be more pronounced than for similar sets of samples from a non-tidal stream. The nature of these variations and factors responsible for them are discussed, and the need for consideration of them in planning a sampling routine is stressed. The nature and mechanism of ocean-water intrusion in tidal rivers is discussed and sampling procedures for its detection are described. lllustrative examples - mostly from the work of the United States Geological Survey or State agencies - show various methods for correlating and presenting data from quality-of-water surveys of tidal rivers. Each tidal river presents an individual problem which can best be understood from a study of the factors involved. To that end the report is supplemented by an annotated bibliography of selected publications in the field.

The influence of sand mining towards the sustainability of power support and capacity of Lambidaro River

NASA Astrophysics Data System (ADS)

Juniah, Restu; Rahmi, Hisni

2017-11-01

Activities of sand mining on the surface stream (river) conducted by Panji Mahakarya company potentially cause various environmental issues. These problems include the destruction of the river ecosystem, decreased the quality of river water quality, increased water pollution load, and another effect on capacity and power support river. The Lambidaro River is one of the rivers found in Palembang, where the inhabitants who live around it take advantage of the existence of this river to meet their daily needs such as bathing, washing, and latrines. The purpose of this research is to know the influence of mining activities towards sustainability of the power support and capacity of the river. The method used in this research is to compare the availability of water and water needs of the population in determining the status of environmental power support based on regulation of the state minister of the environment number 17 in 2009 about the determination of the power guidance support environment in spatial regions, as well as using the index method of pollution based on the decision of the State Minister of the environment number 115 in 2003 about the determination of the status of water quality guidelines with parameters measured are TDS, TSS, pH, DO, COD, dan BOD5. The results of the calculation of the power support river are deficit where SA (34,200,655.64 m3/year) < DA (253,105,600 m3/year). The result of pollution index calculation at 5 water sampling locations shows that the condition of a river is in good condition (uncontaminated) and mild pollutant.

Sele coastal plain flood risk due to wave storm and river flow interaction

NASA Astrophysics Data System (ADS)

Benassai, Guido; Aucelli, Pietro; Di Paola, Gianluigi; Della Morte, Renata; Cozzolino, Luca; Rizzo, Angela

2016-04-01

Wind waves, elevated water levels and river discharge can cause flooding in low-lying coastal areas, where the water level is the interaction between wave storm elevated water levels and river flow interaction. The factors driving the potential flood risk include weather conditions, river water stage and storm surge. These data are required to obtain inputs to run the hydrological model used to evaluate the water surface level during ordinary and extreme events regarding both the fluvial overflow and storm surge at the river mouth. In this paper we studied the interaction between the sea level variation and the river hydraulics in order to assess the location of the river floods in the Sele coastal plain. The wave data were acquired from the wave buoy of Ponza, while the water level data needed to assess the sea level variation were recorded by the tide gauge of Salerno. The water stages, river discharges and rating curves for Sele river were provided by Italian Hydrographic Service (Servizio Idrografico e Mareografico Nazionale, SIMN).We used the dataset of Albanella station (40°29'34.30"N, 15°00'44.30"E), located around 7 km from the river mouth. The extreme river discharges were evaluated through the Weibull equation, which were associated with their return period (TR). The steady state river water levels were evaluated through HEC-RAS 4.0 model, developed by Hydrologic Engineering Center (HEC) of the United States Army Corps of Engineers Hydrologic Engineering Center (USACE,2006). It is a well-known 1D model that computes water surface elevation (WSE) and velocity at discrete cross-sections by solving continuity, energy and flow resistance (e.g., Manning) equation. Data requirements for HEC-RAS include topographic information in the form of a series of cross-sections, friction parameter in the form of Manning's n values across each cross-section, and flow data including flow rates, flow change locations, and boundary conditions. For a steady state sub-critical simulation, the boundary condition is a known downstream WSE, in this case the elevated water level due to wave setup, wind setup and inverted barometer, while the upstream boundary condition consisted in WSE corresponding to river discharges associated to different return periods. The results of the simulations evidence, for the last 10 kilometers of the river, the burst of critical inundation scenarios even with moderate flow discharge, if associated with concurrent storm surge which increase the water level at the river mouth, obstructing normal flow discharge.

Factors influencing bank geomorphology and erosion of the Haw River, a high order river in North Carolina, since European settlement.

PubMed

Macfall, Janet; Robinette, Paul; Welch, David

2014-01-01

The Haw River, a high order river in the southeastern United States, is characterized by severe bank erosion and geomorphic change from historical conditions of clear waters and connected floodplains. In 2014 it was named one of the 10 most threatened rivers in the United States by American Rivers. Like many developed areas, the region has a history of disturbance including extensive upland soil loss from agriculture, dams, and upstream urbanization. The primary objective of this study was to identify the mechanisms controlling channel form and erosion of the Haw River. Field measurements including bank height, bankfull height, bank angle, root depth and density, riparian land cover and slope, surface protection, river width, and bank retreat were collected at 87 sites along 43.5 km of river. A Bank Erosion Hazard Index (BEHI) was calculated for each study site. Mean bank height was 11.8 m, mean width was 84.3 m, and bank retreat for 2005/2007-2011/2013 was 2.3 m. The greatest bank heights, BEHI values, and bank retreat were adjacent to riparian areas with low slope (<2). This is in contrast to previous studies which identify high slope as a risk factor for erosion. Most of the soils in low slope riparian areas were alluvial, suggesting sediment deposition from upland row crop agriculture and/or flooding. Bank retreat was not correlated to bank heights or BEHI values. Historical dams (1.2-3 m height) were not a significant factor. Erosion of the Haw River in the study section of the river (25% of the river length) contributed 205,320 m3 of sediment and 3759 kg of P annually. Concentration of suspended solids in the river increased with discharge. In conclusion, the Haw River is an unstable system, with river bank erosion and geomodification potential influenced by riparian slope and varied flows.

Factors Influencing Bank Geomorphology and Erosion of the Haw River, a High Order River in North Carolina, since European Settlement

PubMed Central

Macfall, Janet; Robinette, Paul; Welch, David

2014-01-01

The Haw River, a high order river in the southeastern United States, is characterized by severe bank erosion and geomorphic change from historical conditions of clear waters and connected floodplains. In 2014 it was named one of the 10 most threatened rivers in the United States by American Rivers. Like many developed areas, the region has a history of disturbance including extensive upland soil loss from agriculture, dams, and upstream urbanization. The primary objective of this study was to identify the mechanisms controlling channel form and erosion of the Haw River. Field measurements including bank height, bankfull height, bank angle, root depth and density, riparian land cover and slope, surface protection, river width, and bank retreat were collected at 87 sites along 43.5 km of river. A Bank Erosion Hazard Index (BEHI) was calculated for each study site. Mean bank height was 11.8 m, mean width was 84.3 m, and bank retreat for 2005/2007-2011/2013 was 2.3 m. The greatest bank heights, BEHI values, and bank retreat were adjacent to riparian areas with low slope (<2). This is in contrast to previous studies which identify high slope as a risk factor for erosion. Most of the soils in low slope riparian areas were alluvial, suggesting sediment deposition from upland row crop agriculture and/or flooding. Bank retreat was not correlated to bank heights or BEHI values. Historical dams (1.2–3 m height) were not a significant factor. Erosion of the Haw River in the study section of the river (25% of the river length) contributed 205,320 m3 of sediment and 3759 kg of P annually. Concentration of suspended solids in the river increased with discharge. In conclusion, the Haw River is an unstable system, with river bank erosion and geomodification potential influenced by riparian slope and varied flows. PMID:25302956

Spatio-temporal statistical models for river monitoring networks.

PubMed

Clement, L; Thas, O; Vanrolleghem, P A; Ottoy, J P

2006-01-01

When introducing new wastewater treatment plants (WWTP), investors and policy makers often want to know if there indeed is a beneficial effect of the installation of a WWTP on the river water quality. Such an effect can be established in time as well as in space. Since both temporal and spatial components affect the output of a monitoring network, their dependence structure has to be modelled. River water quality data typically come from a river monitoring network for which the spatial dependence structure is unidirectional. Thus the traditional spatio-temporal models are not appropriate, as they cannot take advantage of this directional information. In this paper, a state-space model is presented in which the spatial dependence of the state variable is represented by a directed acyclic graph, and the temporal dependence by a first-order autoregressive process. The state-space model is extended with a linear model for the mean to estimate the effect of the activation of a WWTP on the dissolved oxygen concentration downstream.

A saprobic index for biological assessment of river water quality in Brazil (Minas Gerais and Rio de Janeiro states).

PubMed

Junqueira, Marilia Vilela; Friedrich, Günther; Pereira de Araujo, Paulo Roberto

2010-04-01

Based upon several years of experience in investigations with macrozoobenthos in rivers in the states of Minas Gerais and Rio de Janeiro, a biological assessment system has been developed to indicate pollution levels caused by easily degradable organic substances from sewers. The biotic index presented here is aimed at determining water's saprobic levels and was, therefore, named the "Saprobic Index for Brazilian Rivers in Minas Gerais and Rio de Janeiro states" (ISMR). For this purpose, saprobic valences and weights have been established for 122 taxa of tropical macrozoobenthos. Investigations were carried out in little, medium sized and big rivers in mountains and plains. Through ISMR, a classification of water quality and the respective cartographic representation can be obtained. Data collection and treatment methods, as well as the limitations of the biotic index, are thoroughly described. ISMR can also be used as an element to establish complex multimetric indexes intended for an ecological integrity assessment, where it is essential to indicate organic pollution.

Flood Runoff in Relation to Water Vapor Transport by Atmospheric Rivers Over the Western United States, 1949-2015

NASA Astrophysics Data System (ADS)

Konrad, Christopher P.; Dettinger, Michael D.

2017-11-01

Atmospheric rivers (ARs) have a significant role in generating floods across the western United States. We analyze daily streamflow for water years 1949 to 2015 from 5,477 gages in relation to water vapor transport by ARs using a 6 h chronology resolved to 2.5° latitude and longitude. The probability that an AR will generate 50 mm/d of runoff in a river on the Pacific Coast increases from 12% when daily mean water vapor transport, DVT, is greater than 300 kg m-1 s-1 to 54% when DVT > 600 kg m-1 s-1. Extreme runoff, represented by the 99th quantile of daily values, doubles from 80 mm/d at DVT = 300 kg m-1 s-1 to 160 mm/d at DVT = 500 kg m-1 s-1. Forecasts and predictions of water vapor transport by atmospheric rivers can support flood risk assessment and estimates of future flood frequencies and magnitude in the western United States.

Developing an Approach to Prioritize River Restoration using Data Extracted from Flood Risk Information System Databases.

NASA Astrophysics Data System (ADS)

Vimal, S.; Tarboton, D. G.; Band, L. E.; Duncan, J. M.; Lovette, J. P.; Corzo, G.; Miles, B.

2015-12-01

Prioritizing river restoration requires information on river geometry. In many states in the US detailed river geometry has been collected for floodplain mapping and is available in Flood Risk Information Systems (FRIS). In particular, North Carolina has, for its 100 Counties, developed a database of numerous HEC-RAS models which are available through its Flood Risk Information System (FRIS). These models that include over 260 variables were developed and updated by numerous contractors. They contain detailed surveyed or LiDAR derived cross-sections and modeled flood extents for different extreme event return periods. In this work, over 4700 HEC-RAS models' data was integrated and upscaled to utilize detailed cross-section information and 100-year modelled flood extent information to enable river restoration prioritization for the entire state of North Carolina. We developed procedures to extract geomorphic properties such as entrenchment ratio, incision ratio, etc. from these models. Entrenchment ratio quantifies the vertical containment of rivers and thereby their vulnerability to flooding and incision ratio quantifies the depth per unit width. A map of entrenchment ratio for the whole state was derived by linking these model results to a geodatabase. A ranking of highly entrenched counties enabling prioritization for flood allowance and mitigation was obtained. The results were shared through HydroShare and web maps developed for their visualization using Google Maps Engine API.

Preparing for uncertainty: toward managing fluvial geomorphic assessment of Massachusetts rivers

NASA Astrophysics Data System (ADS)

Hatch, C. E.; Mabee, S. B.; Slovin, N. B.; Vogel, E.

2014-12-01

Climate scientists predict (and have already observed) that in the Northeastern U.S., individual storms may be more intense, and that there will be more precipitation on an annual basis. In steep post-glacial terrain, erosion caused by floodwaters is the largest destructive force during high-intensity storm events, and the force most likely to drive major morphological changes to riverbanks and channels. What remains uncertain is which watersheds or river reaches may be subjected to increased damage from more intense storms. This presents a challenge for scientific outreach and management. Many New England states have developed systems for delineating the potentially geomorphically active zones adjacent to rivers, and Vermont has an excellent assessment and land use management system informed by process-based fluvial geomorphologic science. To date, however, Massachusetts has neither. In this project we survey existing protocols for accurately predicting locations of fluvial erosion hazard, including using LiDAR and DEM models to extract basic morphologic metrics. Particularly in states or landscapes with high river density, and during a time of tight fiscal constraints, managers need automated methods that require a minimum of expert input. We test these methods in the Deerfield river watershed in Massachusetts and Vermont, and integrate our knowledge with that of the basin's agricultural and floodplain stakeholders. The results will inform development of a comprehensive river assessment and land use management system for the state of Massachusetts.

Nutrient Concentrations and Their Relations to the Biotic Integrity of Nonwadeable Rivers in Wisconsin

USGS Publications Warehouse

Robertson, Dale M.; Weigel, Brian M.; Graczyk, David J.

2008-01-01

Excessive nutrient [phosphorus (P) and nitrogen (N)] input from point and nonpoint sources is frequently associated with degraded water quality in streams and rivers. Point-source discharges of nutrients are fairly constant and are controlled by the U.S. Environmental Protection Agency's (USEPA) National Pollutant Discharge Elimination System. To reduce inputs from nonpoint sources, agricultural performance standards and regulations for croplands and livestock operations are being proposed by various States. In addition, the USEPA is establishing regionally based nutrient criteria that can be refined by each State to determine whether actions are needed to improve water quality. More confidence in the environmental benefits of the proposed performance standards and nutrient criteria would be possible with improved understanding of the biotic responses to a range of nutrient concentrations in different environmental settings. To achieve this general goal, the U.S. Geological Survey and the Wisconsin Department of Natural Resources collected data from 282 streams and rivers throughout Wisconsin during 2001 through 2003 to: (1) describe how nutrient concentrations and biotic-community structure differ throughout the State, (2) determine which environmental characteristics are most strongly related to the distribution of nutrient concentrations and biotic-community structure, (3) determine reference conditions for water quality and biotic indices for streams and rivers in the State, (4) determine how the biotic communities in streams and rivers in different areas of the State respond to differences in nutrient concentrations, (5) determine the best regionalization scheme to describe the patterns in reference conditions and the corresponding responses in water quality and the biotic communities (primarily for smaller streams), and (6) develop algorithms to estimate nutrient concentrations in streams and rivers from a combination of biotic indices. The ultimate goal of this study is to provide the information needed to guide the development of regionally based nutrient criteria for Wisconsin streams and rivers. In this report, data collected, primarily in 2003, from 42 nonwadeable rivers are used to describe nutrient concentrations and their relations to the biotic integrity of rivers in Wisconsin. In a separate report by Robertson and others (2006a), the data collected from 240 wadeable streams are used to describe these relations in streams in Wisconsin. Reference water-quality conditions for nonwadeable rivers were found to be similar throughout Wisconsin (approximately 0.035 milligrams per liter (mg/L) for total P (TP), 0.500 mg/L for total N (TN), 4 micrograms per liter for suspended chlorophyll a (SCHL), and greater than 110 centimeters for Secchi-tube depth (SD)). For each category of the biotic community (SCHL, macroinvertebrates, and fish), a few indices were more strongly related to differences in nutrient concentrations than were others. For the indices most strongly related to nutrient concentrations, reference conditions were obtained with a regression approach, from values corresponding to the worst 75th-percentile value from a subset of minimally impacted streams (streams having reference nutrient concentrations), and from the best 25th-percentile value of all the data. Concentrations of TP and TN in nonwadeable rivers increased as the percentage of agricultural land in the basin increased; these increases resulted in increased SCHL concentrations and decreased SDs. The responses in SDs and SCHL concentrations to changes in nutrient concentrations were similar throughout most of the State except in rivers in the southeastern part, where SCHL concentrations were lower than would be expected given their nutrient concentrations. Rivers in the southeastern part of the State had high concentrations of total suspended sediment compared to the SCHL concentrations. Many biotic indices responded to increases in nu

A philosophy of rivers: Equilibrium states, channel evolution, teleomatic change and least action principle

NASA Astrophysics Data System (ADS)

Nanson, Gerald C.; Huang, He Qing

2018-02-01

Until recently no universal agreement as to a philosophical or scientific methodological framework has been proposed to guide the study of fluvial geomorphology. An understanding of river form and process requires an understanding of the principles that govern the behaviour and evolution of alluvial rivers at the most fundamental level. To date, the investigations of such principles have followed four approaches: develop qualitative unifying theories that are usually untested; collect and examine data visually and statistically to define semi-quantitative relationships among variables; apply Newtonian theoretical and empirical mechanics in a reductionist manner; resolve the primary flow equations theoretically by assuming maximum or minimum outputs. Here we recommend not a fifth but an overarching philosophy to embrace all four: clarifying and formalising an understanding of the evolution of river channels and iterative directional changes in the context of least action principle (LAP), the theoretical basis of variational mechanics. LAP is exemplified in rivers in the form of maximum flow efficiency (MFE). A sophisticated understanding of evolution in its broadest sense is essential to understand how rivers adjust towards an optimum state rather than towards some other. Because rivers, as dynamic contemporary systems, flow in valleys that are commonly historical landforms and often tectonically determined, we propose that most of the world's alluvial rivers are over-powered for the work they must do. To remain stable they commonly evolve to expend surplus energy via a variety of dynamic equilibrium forms that will further adjust, where possible, to maximise their stability as much less common MFE forms in stationary equilibrium. This paper: 1. Shows that the theory of evolution is derived from, and applicable to, both the physical and biological sciences; 2. Focusses the development of theory in geomorphology on the development of equilibrium theory; 3. Proposes that river channels, like organisms, evolve teleomatically (progression towards an end-state by following natural laws) and iteratively (one stage forming the basis for the next) towards an optimal end-state; 4. Describes LAP as the methodological basis for understanding the self-adjustment alluvial channels towards MFE. 5. Acknowledges that whereas river channels that form within their unmodified alluvium evolve into optimal minimum-energy systems, exogenic variables, such as riparian or aquatic vegetation, can cause significant variations in resultant river-styles. We specifically attempt to address Luna Leopold's lament in 1994 that no clearly expressed philosophy explains the remarkable self-adjustment of alluvial channels.

With deck removed and critical members severed, the bridge begins ...

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

With deck removed and critical members severed, the bridge begins to succumb to tractors, pulling cables attached to its downstream side. View is to the southeast from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

Spray and dust hang in the air, as the demolition ...

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

Spray and dust hang in the air, as the demolition is completed. Only the southeast pier remains standing at right. View is to southeast from confluence of Trinity and South Fork Trinity Rivers - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

Hudson River School

ERIC Educational Resources Information Center

McCloskey, Patrick J.

2004-01-01

In this article, the author features the "Clearwater," a full-size working replica of a 19th century Hudson River cargo sloop. The "Clearwater" has been serving New York state students as a link to both local history and the environment, helping them to learn lessons about the history of the Hudson River and the environment,…

US Airways Flight 1549 Hudson river crash: the New Jersey experience.

PubMed

Merlin, Mark A; Bucher, Joshua; Cortacans, Henry P

2009-01-01

The authors review the preparation, implementation, and management of the US Airways Flight 1549 Hudson River crash. This is a review of the experience of NJ. The state planning that created the ability to execute the treatment of patients from time of impact in the river until debriefing is reviewed.

Laboratory calibration of impact plates for measuring gravel size and mass

USDA-ARS?s Scientific Manuscript database

Continuous monitoring of gravel transport in rivers is necessary for understanding the impact of dam removal on river systems. Impact plates, such as those deployed on the Elwha River in the state of Washington, USA, are a promising technique; however, relating the data generated by the plates to s...

Effects of water use diversion regulation and conservation on sediemtn transport with comparisons from the United States

USGS Publications Warehouse

Gray, J. R.; Osterkamp, W. R.; Jianhua, Xu

2002-01-01

Too much sediment and too little water are related problems in China’s Yellow River Basin. Sediment yield in the basin averages about 2,100 t/(km2·a), greatest is of the world’s large rivers although the Yellow River ranks 31st in mean flow. A quarter of the sediment deposited in the 780-km lower reach, causing bed levels to rise an average of a meter per decade wang and other. Sediment aggradation along this reach is concentrated between dikes, resulting in average river-bed elevations 5 m higher, and at Xinxiang as much as 10 m higher, than surrounding bottomlands. The dikes, which have breached nearly 1,600 times in the last 24 centuries, reduce the threat of flooding for 85-million people on 120,000 km2 in five provinces of northeastern China (Decun, undated). This paper addresses some environmental and social factors related to this problem, and provides descriptions of two United States rivers that exhibit some analogous responses, albeit not to the extent of those associated with the Yellow River, “China’s Sorrow”.

Bottomland Hardwood Forests along the Upper Mississippi River

USGS Publications Warehouse

Yin, Y.; Nelson, J.C.; Lubinski, S.J.

1997-01-01

Bottomland hardwood forests along the United States' Upper Mississippi River have been drastically reduced in acreage and repeatedly logged during the nineteenth and twentieth centuries. Conversion to agricultural land, timber harvesting, and river modifications for flood prevention and for navigation were the primary factors that caused the changes. Navigation structures and flood-prevention levees have altered the fluvial geomorphic dynamics of the river and floodplain system. Restoration and maintenance of the diversity, productivity, and natural regeneration dynamics of the bottomland hardwood forests under the modified river environment represent a major management challenge.

2. William Beardsley standing along the Agua Fria River near ...

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

2. William Beardsley standing along the Agua Fria River near construction site of the Agua Fria project. Photographer James Dix Schuyler, 1903. Source: Schuyler, James D. 'Report on the Water Supply of the Agua Fria River, and the Storage Reservoir Project of the Agua Fria Water and Land Company For Irrigation in the Gila River Valley, Arizona,' (September 29, 1903). Arizona Historical Collection, Hayden Library, Arizona State University, Tempe, Arizona. (Typewritten.) - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

1. 'SANTA ANA RIVER IN SANTA ANA CANYON. ORANGE COUNTY.' ...

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

1. 'SANTA ANA RIVER IN SANTA ANA CANYON. ORANGE COUNTY.' This is an oblique aerial view to the northeast taken from the northeast extremity of the canyon, showing, in the middle distance, the confluence of Chino Creek and the Santa Ana River, site of the future Prado Dam. File number written on negative: R & H 80 026. - Prado Dam, Santa Ana River near junction of State Highways 71 & 91, Corona, Riverside County, CA

Index to river surveys made by the United States Geological Survey and other agencies

USGS Publications Warehouse

Jones, Benjamin E.; Helland, Randolph Olaf

1948-01-01

The descriptive list of surveys of rivers in the United States issued by the United States Geological Survey in 1926 as Water-Supply Paper 558 comprised surveys by the Geological Survey and other Federal bureaus and by State, semiofficial, and private agencies. Since then many additional river surveys, most of them now available in published sheets, have been completed by the Geological Survey, and four supplemental lists describing them have been issued in mimeographed form. The first supplement was compiled by B. E. Jones in 1934, the second by R. O. Helland and D. M. Paul in 1938, the third by R. O. Helland in 1940, and the fourth by L. L. Young and N. J. Tubbs in 1944. The present compilation adds to the preliminary index the material issued in the supplements and later information concerning revisions and availability of maps.

Toward Empirical Estimation of the Total Value of Protecting Rivers

NASA Astrophysics Data System (ADS)

Sanders, Larry D.; Walsh, Richard G.; Loomis, John B.

1990-07-01

The purpose of this paper is to develop and apply a procedure to estimate a statistical demand function for the protection of rivers in the Rocky Mountains of Colorado. Other states and nations around the world face a similar problem of estimating how much they can afford to pay for the protection of rivers. The results suggest that in addition to the direct consumption benefits of onsite recreation, total value includes offsite consumption of the flow of information about these activities and resources consumed as preservation benefits. A sample of the general population of the state reports a willingness to pay rather than forego both types of utility. We recommended that offsite values be added to the value of onsite recreation use to determine the total value of rivers to society.

Ethno medicinal survey of plants used by the indigenes of Rivers State of Nigeria.

PubMed

Ajibesin, Kola' K; Bala, Danladi N; Umoh, Uwemedimo F

2012-09-01

The medicinal plants used in the traditional medicine of Rivers State of Nigeria were surveyed. The survey aims to identify and document the plants used amongst the indigenes of Rivers State. Semi-structured interviews were conducted during a field trip to gather information from traditional medical practitioners (TMPs) and community elders. Medicinal plant species (188) representing 169 genera and 82 families used in the ethno medicine of the people of Rivers State were recorded from 460 households. The most represented genera were Ipomoea and Citrus providing four species each. The most important species showed the highest Fidelity level (FL) value and these included Ageratum conyzoides L. (Asteraceae) (100%) and Tridax procumbens L. (Asteraceae) (100%). The most important categories of diseases were those that showed the highest Informant consensus factor (ICF) value of 0.99, such as dermal or digestive problems and fever/malaria. The most used plant part was leaves (42%), while decoction was the main method of drug preparation (36%). The survey shows that more than half of the medicinal plants gathered in Rivers State are also used in other countries of the world for various ailments. The high values of ICF recorded indicate high degree of agreement among the informants, while the high FL values suggest the popular use of the plants. The survey provides a useful source of information for TMPs and medicinal plant researchers. These medicinal plants gathered may bring about drug discovery and may also be incorporated into the healthcare delivery system of the country.

Attributes for NHDPlus catchments (version 1.1) for the conterminous United States: 30-year average annual maximum temperature, 1971-2000

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the 30-year (1971-2000) average annual maximum temperature in Celsius multiplied by 100 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the United States Average Monthly or Annual Minimum Temperature, 1971 - 2000 raster dataset produced by the PRISM Group at Oregon State University. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Average Annual Daily Minimum Temperature, 2002

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the average monthly minimum temperature in Celsius multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time High-Resolution Monthly Average Maximum/Minimum Temperature for the Conterminous United States for 2002 raster dataset produced by the Spatial Climate Analysis Service at Oregon State University. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: 30-Year Average Annual Precipitation, 1971-2000

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the 30-year (1971-2000) average annual precipitation in millimeters multiplied by 100 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the "United States Average Monthly or Annual Precipitation, 1971 - 2000" raster dataset produced by the PRISM Group at Oregon State University. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: 30-Year Average Annual Minimum Temperature, 1971-2000

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the 30-year (1971-2000) average annual minimum temperature in Celsius multiplied by 100 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the "United States Average Monthly or Annual Minimum Temperature, 1971 - 2000" raster dataset produced by the PRISM Group at Oregon State University. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

Attributes for NHDPlus catchments (version 1.1) for the conterminous United States: Average Annual Daily Maximum Temperature, 2002

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the average monthly maximum temperature in Celsius multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time High-Resolution Monthly Average Maximum/Minimum Temperature for the Conterminous United States for 2002 raster dataset produced by the Spatial Climate Analysis Service at Oregon State University. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Average Monthly Precipitation, 2002

USGS Publications Warehouse

Wieczorek, Michael; LaMotte, Andrew E.

2010-01-01

This data set represents the average monthly precipitation in millimeters multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time Monthly High-Resolution Precipitation Climate Data Set for the Conterminous United States (2002) raster dataset produced by the Spatial Climate Analysis Service at Oregon State University. The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that incorporates many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,00-scale NHD), improved networking, naming, and value-added attributes (VAAs). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first widely used in New England, and thus referred to as "the New England Method." This technique involves "burning in" the 1:100,000-scale NHD and when available building "walls" using the National Watershed Boundary Dataset (WBD). The resulting modified digital elevation model (HydroDEM) is used to produce hydrologic derivatives that agree with the NHD and WBD. Over the past two years, an interdisciplinary team from the U.S. Geological Survey (USGS), and the U.S. Environmental Protection Agency (USEPA), and contractors, found that this method produces the best quality NHD catchments using an automated process (USEPA, 2007). The NHDPlus dataset is organized by 18 Production Units that cover the conterminous United States. The NHDPlus version 1.1 data are grouped by the U.S. Geologic Survey's Major River Basins (MRBs, Crawford and others, 2006). MRB1, covering the New England and Mid-Atlantic River basins, contains NHDPlus Production Units 1 and 2. MRB2, covering the South Atlantic-Gulf and Tennessee River basins, contains NHDPlus Production Units 3 and 6. MRB3, covering the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy River basins, contains NHDPlus Production Units 4, 5, 7 and 9. MRB4, covering the Missouri River basins, contains NHDPlus Production Units 10-lower and 10-upper. MRB5, covering the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf River basins, contains NHDPlus Production Units 8, 11 and 12. MRB6, covering the Rio Grande, Colorado and Great Basin River basins, contains NHDPlus Production Units 13, 14, 15 and 16. MRB7, covering the Pacific Northwest River basins, contains NHDPlus Production Unit 17. MRB8, covering California River basins, contains NHDPlus Production Unit 18.

Water quality of arctic rivers in Finnish Lapland.

PubMed

Niemi, Jorma

2010-02-01

The water quality monitoring data of eight rivers situated in the Finnish Lapland above the Arctic Circle were investigated. These rivers are icebound annually for about 200 days. They belong to the International River Basin District founded according to the European Union Water Framework Directive and shared with Norway. They are part of the European river monitoring network that includes some 3,400 river sites. The water quality monitoring datasets available varied between the rivers, the longest comprising the period 1975-2003 and the shortest 1989-2003. For each river, annual medians of eight water quality variables were calculated. In addition, medians and fifth and 95th percentiles were calculated for the whole observation periods. The medians indicated good river water quality in comparison to other national or foreign rivers. However, the river water quality oscillated widely. Some rivers were in practice in pristine state, whereas some showed slight human impacts, e.g., occasional high values of hygienic indicator bacteria.

Eolian sand transport pathways in the southwestern United States: Importance of the Colorado River and local sources

USGS Publications Warehouse

Muhs, D.R.; Reynolds, R.L.; Been, J.; Skipp, G.

2003-01-01

Geomorphologists have long recognized that eolian sand transport pathways extend over long distances in desert regions. Along such pathways, sediment transport by wind can surmount topographic obstacles and cross major drainages. Recent studies have suggested that three distinct eolian sand transport pathways exist (or once existed) in the Mojave and Sonoran Desert regions of the southwestern United States. One hypothesized pathway is colian sand transport from the eastern Mojave Desert of California into western Arizona, near Parker, and would require sand movement across what must have been at least a seasonally dry Colorado River valley. We tested this hypothesis by mineralogical, geochemical and magnetic analyses of eolian sands on both sides of the Colorado River, as well as sediment from the river itself. Results indicate that dunes on opposite sides of the Colorado River are mineralogically distinct: eastern California dunes are feldspar-rich whereas western Arizona dunes are quartz-rich, derived from quartz-rich Colorado River sediments. Because of historic vegetation changes, little new sediment from the Colorado River is presently available to supply the Parker dunes. Based on this study and previous work, the Colorado River is now known to be the source of sand for at least three of the major dune fields of the Sonoran Desert of western Arizona and northern Mexico. On the other hand, locally derived alluvium appears to be a more important source of dune fields in the Mojave Desert of California. Although many geomorphologists have stressed the importance of large fluvial systems in the origin of desert dune fields, few empirical data actually exist to support this theory. The results presented here demonstrate that a major river system in the southwestern United States is a barrier to the migration of some dune fields, but essential to the origin of others. Published by Elsevier Science Ltd.

Politics of Leadership and Implementation of Educational Policies and Programmes of Tertiary Institutions in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ekpiken, W. E.; Ifere, Francis O.

2015-01-01

This paper examines issues of politics of leadership and implementation of Educational policies and programmes of tertiary institutions in Cross River State with a view to determine the problems are situated and suggest the way forward. It examines the concept of politics of education, concept of leadership, meaning of planning and generation of…

Assessing Teaching Readiness of University Students in Cross River State, Nigeria: Implications for Managing Teacher Education Reforms

ERIC Educational Resources Information Center

Akuegwu, B. A.; Edet, A. O.; Uchendu, C. C.; Ekpoh, U. I.

2011-01-01

This ex-post-facto designed study was geared towards assessing the readiness of would-be teachers in universities in Cross River State for the teaching profession, and how reforms can be managed to strengthen this. Three hypotheses were isolated to give direction to this investigation. 200 students from the two universities in the state…

Resource Availability and Distribution in Public and Private Special Education Schools in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ntukidem, Peter James; Ntukidem, Eno Peter; Eyo, Eno Etudor

2011-01-01

This study investigated the availability and distribution of staff and facilities/equipment in private and public special needs schools in Cross River State. Sixty-nine (69) teachers and three (3) principals of these schools constituted the sample size of the study. One hypothesis and one research question were postulated to guide the study. The…

Factors Related to under Achievement in Science, Technology and Mathematics Education (STME) in Secondary Schools in Rivers State, Nigeria

ERIC Educational Resources Information Center

Obomanu, B. J.; Adaramola, M. O.

2011-01-01

We report a research into factors related to underachievement in science, technology and mathematics (STM) education in schools in Rivers State, Nigeria. The study investigated 240 Nigerian secondary school students, 100 parents, 140 STM teachers and 20 government officials from Port Harcourt Metropolis. Five (5) research questions and one…

Government's Involvement in Safety Management in Public Early Childhood Education Centres (ECECs) in Rivers State, Nigeria

ERIC Educational Resources Information Center

Igbinedion, Doye Angela; Abraham, N. M.; Nwogu, U. J.

2016-01-01

The study examined Governments' Involvement in Safety Management in Public Early Childhood Education Centres (ECECs) in Rivers State. Two research questions and two hypotheses guided the study which adopted the descriptive survey design. The population of the study comprised of five hundred and ten (510) ECECs in the twenty three (23) Local…

78 FR 73585 - The Three Rivers Railway Company-Corporate Family Merger Exemption-Mahoning State Line Railroad...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-06

... Railway Company--Corporate Family Merger Exemption--Mahoning State Line Railroad Company The Three Rivers... filed a verified notice of exemption under 49 CFR 1180.2(d)(3) for a corporate family transaction... intends to merge MSLR into TRRC on or after that date. This is a transaction within a corporate family of...

Fire history in the Ohio River Valley and its relation to climate

Treesearch

Daniel A. Yaussy; Elaine Kennedy. Sutherland

1994-01-01

Annual wildfire records (1926-77) from the national forests in states bordering the Ohio River (lllinois, Indiana, Kentucky, Missouri, Ohio, and West Virginia) were compared to climate records to assess relationships. Summaries of spring and fall fire seasons obtained for the Daniel Boone National Forest in Kentucky (1970-92) and for the State of Ohio (1969-84,...

Forest resources in the Tennessee valley of north Alabama

Treesearch

James W. Cruikshank

1940-01-01

Forest survey Unit No. 6 in north Alabama embraces 10 counties that lie almost exclusively in the watershed of the Tennessee River (fig. 2). The unit, containing 4,595,900 acres, extends entirely across the northern part of the State, with its southern boundary roughly parallel to, and about 50 miles south of, the Tennessee State line. The Tennessee River, which enters...

76 FR 37152 - Notice of Lodging of Consent Decree Under the Comprehensive Environmental Response, Compensation...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-24

... with the United States District Court for the Eastern District of Wisconsin. In this action, the United... agreement in this matter. On May 12, 2004, the United States District Court for the Eastern District of... remedy for the remainder of the Site, i.e., the Lower River, Middle River, and Inner Harbor portions of...

Stakeholders' Perception on Teachers' Assessment Effectiveness in Secondary Schools in Port Harcourt Metropolis in Rivers State

ERIC Educational Resources Information Center

Ogidi, Reuben C.; Udechukwu, Jonathan O.

2017-01-01

The study sought to investigate the perception of stakeholders on teachers' assessment effectiveness in secondary schools in Port Harcourt Metropolis in Rivers State. Three research questions and one hypothesis were formulated to guide the study. The study adopted survey research design. The sample of the study consisted of 20 principles, 30 vice…

Entrepreneurship Education and Career Intentions of Tertiary Education Students in Akwa Ibom and Cross River States, Nigeria

ERIC Educational Resources Information Center

Ekpoh, Uduak Imo; Edet, Aniefiok Oswald

2011-01-01

This paper explores the impact of entrepreneurship education on career intentions among 500 students drawn from two universities in Akwa Ibom and Cross River States of Nigeria. The study adopted a survey design. Two research questions and two hypotheses were raised for the study. Data were collected using a structured questionnaire titled…

Teaching Trajectories and Students' Understanding of Difficult Concepts in Biology in Obio/Akpor Local Government Area in Rivers State

ERIC Educational Resources Information Center

Mumuni, Abosede Anthonia Olufemi; Dike, John Worlu; Uzoma-Nwogu, Azibaolanari

2017-01-01

This study investigated the effects of teaching trajectories on students' understanding of difficult concepts in Biology. Two research questions and two null hypotheses guided the study which was carried out in Obio/Akpor Local Government Area of Rivers State. Two public coeducational schools out of thirteen drawn through purposive sampling…

7. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS '1929, WHITE ...

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

7. DETAIL VIEW OF BRIDGE DATEPLATE WHICH READS '1929, WHITE RIVER BRIDGE, BUILT BY ARKANSAS HIGHWAY COMMISSION, DWIGHT BLACKWOOD, CHAIRMAN, JUSTIN MATTHEWS, J. LAN WILLIAMS, J.S. PARKS, SAM J. WILSON, COMMISSIONERS, C.S. CHRISTIAN, STATE HIGHWAY ENGINEER, IRA HEDRICK, INC., CONSULTING ENGINEERS, LIST & WEATHERLY, CONSTRUCTION CO.' - Newport Bridge, Spanning White River at State Highway 14, Newport, Jackson County, AR

Public Perception of the Millennium Development Goals on Access to Safe Drinking Water in Cross River State, Nigeria

ERIC Educational Resources Information Center

Eni, David D.; Ojong, William M.

2014-01-01

This study evaluated the public perception of Millennium Development Goals (MDGs) of environmental sustainability with focus on the MDG target which has to do with reducing the proportion of people without access to safe drinking water in Cross River State, Nigeria. The stratified and systematic sampling techniques were adopted for the study,…

Western and Traditional Educational Background of Midwives and Delivery Pain Control among Women in Cross River State, Nigeria

ERIC Educational Resources Information Center

Oyira, Emilia James; Emon, Umoe Duke; Essien, N. C.; Ekpenyong, Affiong Onoyom

2015-01-01

This study sought to investigate western and traditional educational background of midwives with regard to their effectiveness in delivery pain control in Cross River State-Nigeria. To achieve this purpose, two null hypotheses were formulated to guide the investigation. The study adopted the survey design. The sample consisted of 360 post-natal…

Salmonid Gamete Preservation in the Snake River Basin, Annual Report 2002.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Young, William; Kucera, Paul

2003-07-01

In spite of an intensive management effort, chinook salmon (Oncorhynchus tshawytscha) and steelhead (Oncorhynchus mykiss) populations in the Northwest have not recovered and are currently listed as threatened species under the Endangered Species Act. In addition to the loss of diversity from stocks that have already gone extinct, decreased genetic diversity resulting from genetic drift and inbreeding is a major concern. Reduced population and genetic variability diminishes the environmental adaptability of individual species and entire ecological communities. The Nez Perce Tribe (NPT), in cooperation with Washington State University and the University of Idaho, established a germplasm repository in 1992 inmore » order to preserve the remaining salmonid diversity in the region. The germplasm repository provides long-term storage for cryopreserved gametes. Although only male gametes can be cryopreserved, conserving the male component of genetic diversity will maintain future management options for species recovery. NPT efforts have focused on preserving salmon and steelhead gametes from the major river subbasins in the Snake River basin. However, the repository is available for all management agencies to contribute gamete samples from other regions and species. In 2002 a total of 570 viable semen samples were added to the germplasm repository. This included the gametes of 287 chinook salmon from the Lostine River, Catherine Creek, upper Grande Ronde River, Imnaha River (Lookingglass Hatchery), Lake Creek, South Fork Salmon River, Johnson Creek, Big Creek, Capehorn Creek, Marsh Creek, Pahsimeroi River (Pahsimeroi Hatchery), and upper Salmon River (Sawtooth Hatchery) and the gametes of 280 steelhead from the North Fork Clearwater River (Dworshak Hatchery), Fish Creek, Little Sheep Creek, Pahsimeroi River (Pahsimeroi Hatchery) and Snake River (Oxbow Hatchery). In addition, gametes from 60 Yakima River spring chinook and 34 Wenatchee River coho salmon were added to the repository by Washington Department of Fish and Wildlife and Columbia River Intertribal Fish Commission, respectively. To date, a total of 3,928 Columbia River salmon and steelhead gamete samples and three Kootenai River white sturgeon are preserved in the repository. Samples are stored in independent locations at the University of Idaho (UI) and Washington State University (WSU).« less

Taking the pulse of a river system: first 20 years

USGS Publications Warehouse

Leake, Linda; Johnson, Barry

2006-01-01

Your doctor would not base decisions for your health care today on one physical examination when you were age three! You would reasonably expect decisions to be based on records from over your lifetime. Likewise, those responsible for monitoring the health of the Upper Mississippi River System want a more comprehensive way to diagnose problems and find treatment options. To begin developing a comprehensive view of the river, the five neighboring states of the Upper Mississippi River System and several Federal agencies formed a partnership in 1986 to monitor river conditions and long-term trends in the Upper Mississippi and Illinois Rivers.

25. VIEW, LOOKING SOUTHWEST INSIDE TRANSFORMER ROOM, SHOWING TRANSFORMERS AND ...

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

25. VIEW, LOOKING SOUTHWEST INSIDE TRANSFORMER ROOM, SHOWING TRANSFORMERS AND KNIFE SWITCHES - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

26. VIEW, LOOKING NORTHWEST INSIDE TRANSFORMER ROOM, SHOWING OIL FILLED ...

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

26. VIEW, LOOKING NORTHWEST INSIDE TRANSFORMER ROOM, SHOWING OIL- FILLED TRANSFORMER POTS - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

Defining biophysical reference conditions for dynamics river systems: an Alaskan example

NASA Astrophysics Data System (ADS)

Pess, G. R.

2008-12-01

Defining reference conditions for dynamic river ecosystems is difficult for two reasons. First long-term, persistent anthropogenic influences such as land development, harvest of biological resources, and invasive species have resulted in degraded, reduced, and simplified ecological communities and associated habitats. Second, river systems that have not been altered through human disturbance rarely have a long-term dataset on ecological conditions. However there are exceptions which can help us define the dynamic nature of river ecosystems. One large-scale exception is the Wood River system in Bristol Bay, Alaska, where habitat and salmon populations have not been altered by anthropogenic influences such as land development, hatchery production, and invasive species. In addition, the one major anthropogenic disturbance, salmon (Oncorhynchus spp.) harvest, has been quantified and regulated since its inception. First, we examined the variation in watershed and stream habitat characteristics across the Wood River system. We then compared these stream habitat characteristics with data that was collected in the 1950s. Lastly, we examined the correlation between pink (Oncorhynchus gorbuscha), chum (O. keta), and Chinook (O. tshawytscha), and sockeye salmon (O. nerka), and habitat characteristics in the Wood River system using four decades of data on salmon. We found that specific habitat attributes such as stream channel wetted width, depth, cover type, and the proportion of spawnable area were similar to data collected in the 1950s. Greater stream habitat variation occurred among streams than over time. Salmon occurrence and abundance, however was more temporal and spatially variable. The occurrence of pink and chum salmon increased from the 1970's to the present in the Wood River system, while sockeye abundance has fluctuated with changes in ocean conditions. Pink, Chinook and chum salmon ranged from non-existent to episodic to abundantly perennial, while sockeye dominated all streams in the Wood River system. One main trend was the frequency of occurrence and abundance of pink, Chinook, and chum salmon increased with watershed drainage area and stream depth and, to a lesser extent, decreased with sockeye salmon density. Conversely, sockeye salmon densities decreased with watershed drainage area and stream depth. Wood river habitat was temporally stable and spatially variable, thus identifying the suite of stream channel types that occur and identifying reference states for each is critical to capture reference conditions. Wood River biological reference states need to be established over a longer time frame than physical attributes because of the large-scale temporal variability that is forced by climatic conditions and larger scale spatially- explicit trends. Thus biological reference states for the Wood River system need to be defined with multiple streams, similar to developing reference states for different stream channel types, in order to capture the range of biological variability.

River habitat assessment for ecological restoration of Wei River Basin, China.

PubMed

Yang, Tao; Wang, Shuo; Li, Xiaoping; Wu, Ting; Li, Li; Chen, Jia

2018-04-11

As an important composition component of river ecosystems, river habitats must undergo quality assessment to potentially provide scientific basis for river ecological restoration. Substrate composition, habitat complexity, bank erosion degree, river meandering degree, human activity intensity, vegetation buffer width, water quality, and water condition were determined as indicators for river habitat assessment. The comprehensive habitat quality index (CHQI) was established for the Wei River Basin. In addition, the indicator values were determined on the basis of a field investigation at 12 national hydrological stations distributed across the Wei, Jing, and Beiluo Rivers. The analytic hierarchy process was used to determine the indicator weights and thus distinguish the relative importance of the assessment indicator system. Results indicated that the average CHQIs for the Wei, Jing, and Beiluo Rivers were 0.417, 0.508, and 0.304, respectively. The river habitat quality for the three rivers was well. As for the whole river basin, the river habitat quality for 25% of the cross section was very well, the other 25% was well, and the 50% remaining was in critical state. The river habitat quality of the Jing River was better than that of the Wei and Beiluo Rivers.

Age Tracers and Residence Time in the Hudson River Estuary

NASA Astrophysics Data System (ADS)

Nadell, S. A.; Geyer, W. R.; Wang, T.

2016-02-01

The Hudson River is one of the most nutrient loaded rivers in the country, however phytoplankton bloom do not occur, possibly as a result of how quickly water moves though the Hudson River estuary. Slower water residence times may then allow for significant phytoplankton growth. Water age and residence time, which are compliments of one another under stead-state conditions, are important factors in determining where phytoplankton move and how long they spend within a favorable portion of the estuary. This research involved introducing a freshwater and saltwater age tracer into the Regional Ocean Modeling System (ROMS) for the Hudson River estuary domain to observe the distribution of ages within the spring-neap tidal cycle and across different river discharge rates. These discharge rates represented average (500 m3/s), relatively high (1000 m3/s), and relatively low (200 m3/s) river flow conditions for the Hudson River. Saltwater age followed a distribution similar to salinity, while freshwater age distribution mostly represented river transit time. Under steady state conditions, combined freshwater and saltwater age may be used to calculate a rough estimate of estuary residence time. The results show that the residence time of the full estuary appears to be at greater than the doubling time of phytoplankton for all discharge rates and by over five days for even the relatively high discharge case. This leads to the conclusion that other estuary factors, including light availability and salinity, may be more important for limiting phytoplankton growth than residence time.

54. VIEW SHOWING THE PLACEMENT OF SPIDER WEB BRACING, SHOOFLY ...

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

54. VIEW SHOWING THE PLACEMENT OF SPIDER WEB BRACING, SHOOFLY BRIDGE, January 1935 - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

The United States Air Force and Humanitarian Airlift Operations 1947-1994

DTIC Science & Technology

1998-01-01

Flood. Location: Republic of Bolivia. Date(s): February 13 and 28, 1971. Emergency: Heavy rain flooded the Beni and Madre de Dios River valleys of...descended on the Beni and Madre de Dios River valleys of northern Bolivia on the edge of the Amazon basin, flooding Riberalta and surrounding areas... heavy rain flooded river valleys south of Volcan de Fuego, Guatemala, threatening the towns of Singuinala and La Democracia. The Pantaleon River near

8. Historic photo taken during construction of the Lost River ...

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

8. Historic photo taken during construction of the Lost River Diversion Dam and House. Labeled as follows, 'View showing walk construction North side. Group in foreground, left to right: - J.M. McLean, I.S. Voorhees, Asst Eng'r, A.B. Clevland, engineer... W.W. Patch, Project Engineer.' Negative # 95. Facing east. - Klamath Basin Project, Lost River Diversion Dam House, Lost River near intersection of State Highway 140 & Hill Road, Klamath Falls, Klamath County, OR

Cooper Lake and Channels, Texas. Supplement.

DTIC Science & Technology

1977-06-24

subject to the Red River compact, which is an agreement between the States of Arkansas, Oklahoma, Louisiana , and Texas concerning the water in the Red River ...new reservoir sites, and ground water 26 ;’ i - -- " ... sources. The geographical area considered was the lower section of the Red River Basin, the...Cooper Lake site. Two potential sources of water supply in the Red River Basin were considered in more detail. One would be to divert water from the

Sources and Delivery of Nutrients to the Northwestern Gulf of Mexico from Streams in the South-Central United States1

PubMed Central

Rebich, Richard A; Houston, Natalie A; Mize, Scott V; Pearson, Daniel K; Ging, Patricia B; Evan Hornig, C

2011-01-01

Abstract SPAtially Referenced Regressions On Watershed attributes (SPARROW) models were developed to estimate nutrient inputs [total nitrogen (TN) and total phosphorus (TP)] to the northwestern part of the Gulf of Mexico from streams in the South-Central United States (U.S.). This area included drainages of the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf hydrologic regions. The models were standardized to reflect nutrient sources and stream conditions during 2002. Model predictions of nutrient loads (mass per time) and yields (mass per area per time) generally were greatest in streams in the eastern part of the region and along reaches near the Texas and Louisiana shoreline. The Mississippi River and Atchafalaya River watersheds, which drain nearly two-thirds of the conterminous U.S., delivered the largest nutrient loads to the Gulf of Mexico, as expected. However, the three largest delivered TN yields were from the Trinity River/Galveston Bay, Calcasieu River, and Aransas River watersheds, while the three largest delivered TP yields were from the Calcasieu River, Mermentau River, and Trinity River/Galveston Bay watersheds. Model output indicated that the three largest sources of nitrogen from the region were atmospheric deposition (42%), commercial fertilizer (20%), and livestock manure (unconfined, 17%). The three largest sources of phosphorus were commercial fertilizer (28%), urban runoff (23%), and livestock manure (confined and unconfined, 23%). PMID:22457582

River flooding and its impacts on large-scale biocontrol of Tamarix in the Colorado and Virgin River system: Moving targets and trajectories

USDA-ARS?s Scientific Manuscript database

Along riparian corridors throughout the arid and semiarid regions of the western United States, non-native shrubs and trees in the genus Tamarix have replaced native vegetation. Plant communities along rivers with altered flow regimes and flood control have become particularly vulnerable to widespre...

The geomorphic response of gravel-bed rivers to dams: perspectives and prospects

Treesearch

Gordon E. Grant

2012-01-01

The paper summarizes over 40 years of research on the downstream geomorphic responses of rivers to dams, with a particular emphasis on gravel-bed rivers, and evaluates the state if the science with respect to predicting channel adjustments: channel incision, lateral adjustments, and bed textural changes. Effects of vegetation and implications for management are also...

Rising stream and river temperatures in the United States

Treesearch

Sujay S. Kaushal; Gene E. Likens; Norbert A. Jaworski; Michael L. Pace; Ashley M. Sides; David Seekell; Kenneth T. Belt; David H. Secor; Rebecca L. Wingate

2010-01-01

Water temperatures are increasing in many streams and rivers throughout the US. We analyzed historical records from 40 sites and found that 20 major streams and rivers have shown statistically significant, long-term warming. Annual mean water temperatures increased by 0.009-0.077°C yr-1, and rates of warming were most rapid in, but not...

Saltcedar control and water salvage on the Pecos River, Texas, 1999 to 2003

Treesearch

Charles R. Hart; Larry D. White; Alyson McDonald; Zhuping Sheng

2007-01-01

A large scale ecosystem restoration program was initiated in 1997 on the Pecos River in western Texas. Saltcedar (Tamarix spp.), a non-native invasive tree, had created a near monoculture along the banks of the river by replacing most native vegetation. Local irrigation districts, private landowners, federal and state agencies, and private industry...

Baldcypress Restoration in a Saltwater Damaged Area of South Carolina

Treesearch

William H. Conner; Mehmet Ozalp

2002-01-01

Baldcypress (Taxodium distichum (L.) Rich.) seed was collected in 1992 from nine different estuarine areas in the southeastern United States (Winyah Bay, SC, Ogeechee and Altmaha Rivers in GA, Loftin Creek, FL, Ochlockonee River FL, Mobile Bay, AL, West Pearl River, LA, Bayou LaBranche, LA, and Lake Chicot, LA) and planted in Clemson...

78 FR 28139 - Drawbridge Operation Regulation; Tuckahoe River, Between Corbin City and Upper Township, NJ

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-14

... Operation Regulation; Tuckahoe River, Between Corbin City and Upper Township, NJ AGENCY: Coast Guard, DHS... River, mile 8.0, between Corbin City and Upper Township, NJ. The deviation is necessary to facilitate... operating schedule, the State Highway Bridge, mile 8.0, between Corbin City and Upper Township, NJ shall...

60. C.J.T., photographer December 23, 1955 KLAMATH RIVER BRIDGE, DEL ...

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

60. C.J.T., photographer December 23, 1955 KLAMATH RIVER BRIDGE, DEL NORTE COUNTY, SECTION A, HIGHWAY 1. DN-1-A #538, KLAMATH RIVER BR. FROM SO. END, 12/23/55, C.J.T. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

River food webs: Incorporating nature’s invisible fabric into river management

Treesearch

Andrea Watts; Ryan Bellmore; Joseph Benjamin; Colden Baxter

2018-01-01

Increasing the population of spring Chinook salmon and summer steelhead in Washington state’s Methow River is a goal of the Upper Columbia Spring Chinook Salmon and Steelhead Recovery Plan. Spring Chinook salmon and summer steelhead are listed as endangered and threatened, respectively, under the Endangered Species Act. Installing logjams and...

Threatened fishes of the world: Alosa alabamae (Jordan and Evermann, 1896) (Clupeidae)

Treesearch

Dwayne W. Meadows; Susan B. Adams; Jacob F. Schaefer

2007-01-01

River drainage to the Suwannee River, Florida (Mettee and O'Neil 2003); extirpated from at least 8 of the 14 native states (Mettee and O'Neil 2003). Abundance: Once commercially harvested, now rare (Mettee and O'Neil 2003); largest remaining population occurs in the Apalachicola River, Florida (Barku-100 et a!. 1993). Habitat...

Collaborative Initiative toward Developing River Forecasting in South America

NASA Astrophysics Data System (ADS)

Cabrera, R.

2015-12-01

In the United States, river floods have been discussed as early as 1884. Following a disastrous flooding in 1903, Congress passed legislation and river and flood services became a separate division within the U.S. Weather Bureau. The first River Forecast Center started in 1946 and today the whole country is served by thirteen River Forecast Centers. News from Latin American and Caribbean Countries often report of devastating flooding. However, river forecast services are not fully developed yet. This presentation suggests the utilization of a multinational collaborative approach toward the development of river forecasts in order to mitigate flooding in South America. The benefit of an international strategy resides in the strength created by a team of professionals with different capabilities and expertise.

Ground Water Redox Zonation near La Pine, Oregon: Relation to River Position within the Aquifer-Riparian Zone Continuum

USGS Publications Warehouse

Hinkle, Stephen R.; Morgan, David S.; Orzol, Leonard L.; Polette, Danial J.

2007-01-01

Increasing residential development since in the 1960s has lead to increases in nitrate concentrations in shallow ground water in parts of the 247 square mile study area near La Pine, Oregon. Denitrification is the dominant nitrate-removal process that occurs in suboxic ground water, and suboxic ground water serves as a barrier to transport of most nitrate in the aquifer. Oxic ground water, on the other hand, represents a potential pathway for nitrate transport from terrestrial recharge areas to the Deschutes and Little Deschutes Rivers. The effects of present and potential future discharge of ground-water nitrate into the nitrogen-limited Deschutes and Little Deschutes Rivers are not known. However, additions of nitrogen to nitrogen-limited rivers can lead to increases in primary productivity which, in turn, can increase the magnitudes of dissolved oxygen and pH swings in river water. An understanding of the distribution of oxic ground water in the near-river environment could facilitate understanding the vulnerability of these rivers and could be a useful tool for management of these rivers. In this study, transects of temporary wells were installed in sub-river sediments beneath the Deschutes and Little Deschutes Rivers near La Pine to characterize near-river reduction/oxidation (redox) conditions near the ends of ground-water flow paths. Samples from transects installed near the center of the riparian zone or flood plain were consistently suboxic. Where transects were near edges of riparian zones, most ground-water samples also were suboxic. Oxic ground water (other than hyporheic water) was uncommon, and was only detected near the outside edge of some meander bends. This pattern of occurrence likely reflects geochemical controls throughout the aquifer as well as geochemical processes in the microbiologically active riparian zone near the end of ground-water flow paths. Younger, typically less reduced ground water generally enters near-river environments through peripheral zones, whereas older, typically more reduced ground water tends to discharge closer to the center of the river corridor. Such distributions of redox state reflect ground-water movement and geochemical evolution at the aquifer-scale. Redox state of ground water undergoes additional modification as ground water nears discharge points in or adjacent to rivers, where riparian zone processes can be important. Lateral erosion of river systems away from the center of the flood plain can decrease or even eliminate interactions between ground water and reducing riparian zone sediments. Thus, ground water redox patterns in near-river sediments appear to reflect the position of a river within the riparian zone/aquifer continuum. Spatial heterogeneity of redox conditions near the river/aquifer boundary (that is, near the riverbed) makes it difficult to extrapolate transect-scale findings to a precise delineation of the oxic-suboxic boundary in the near-river environment of the entire study area. However, the understanding of relations between near-river redox state and proximity to riparian zone edges provides a basis for applying these results to the study-area scale, and could help guide management efforts such as nitrogen-reduction actions or establishment of Total Maximum Daily Load criteria. Coupling the ground-water redox-based understanding of river vulnerability with ground-water particle-tracking-based characterization of connections between upgradient recharge areas and receiving rivers demonstrates one means of linking effects of potential nitrate loads at the beginning of ground-water flow paths with river vulnerability.

17. DETAIL VIEW OF CUPOLA ATOP OPERATOR'S CABIN WHICH MOUNTS ...

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

17. DETAIL VIEW OF CUPOLA ATOP OPERATOR'S CABIN WHICH MOUNTS SIGNAL HORNS, WEATHER VANE - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

Suspended-sediment concentrations, bedload, particle sizes, surrogate measurements, and annual sediment loads for selected sites in the lower Minnesota River Basin, water years 2011 through 2016

USGS Publications Warehouse

Groten, Joel T.; Ellison, Christopher A.; Hendrickson, Jon S.

2016-12-20

Accurate measurements of fluvial sediment are important for assessing stream ecological health, calculating flood levels, computing sediment budgets, and managing and protecting water resources. Sediment-enriched rivers in Minnesota are a concern among Federal, State, and local governments because turbidity and sediment-laden waters are the leading impairments and affect more than 6,000 miles of rivers in Minnesota. The suspended sediment in the lower Minnesota River is deleterious, contributing about 75 to 90 percent of the suspended sediment being deposited into Lake Pepin. The Saint Paul District of the U.S. Army Corps of Engineers and the Lower Minnesota River Watershed District collaborate to maintain a navigation channel on the lower 14.7 miles of the Minnesota River through scheduled dredging operations. The Minnesota Pollution Control Agency has adopted a sediment-reduction strategy to reduce sediment in the Minnesota River by 90 percent by 2040.The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, the Minnesota Pollution Control Agency, and the Lower Minnesota River Watershed District, collected suspended-sediment, bedload, and particle-size samples at five sites in the lower Minnesota River Basin during water years 2011 through 2014 and surrogate measurements of acoustic backscatter at one of these sites on the lower Minnesota River during water years 2012 through 2016 to quantify sediment loads and improve understanding of sediment-transport relations. Annual sediment loads were computed for calendar years 2011 through 2014.Data collected from water years 2011 through 2014 indicated that two tributaries, Le Sueur River and High Island Creek, had the highest sediment yield and concentrations of suspended sediment. These tributaries also had greater stream gradients than the sites on the Minnesota River. Suspended fines were greater than suspended sand at all sites in the study area. The range of median particle sizes matched the range for stream gradients from greatest to smallest. Bedload ranged from 3 to 20 percent of the total load at the Le Sueur River, Minnesota River at Mankato, and High Island Creek and was less than 1 percent of the total load at the Minnesota River near Jordan and at Fort Snelling State Park. The reach of the Minnesota River between Mankato and Jordan is a major source of sediment, with the sediment yield at Jordan being two and a half times greater than at Mankato. Between Jordan and Fort Snelling, the sediment yield decreases substantially, which indicates that the Minnesota River in this reach is a sink for sediment. Surrogate measurements (acoustic backscatter) collected with suspended-sediment concentration data from water years 2012 through 2016 from the Minnesota River at Fort Snelling State Park indicated strong relations between the acoustic backscatter and suspended-sediment concentrations. These results point to the dynamic nature of sediment aggradation, degradation, and transport in the Minnesota River Basin. The analyses described in this report will improve the understanding of sediment-transport relations and sediment budgets in the Minnesota River Basin.

A legacy of change: The lower Colorado River, Arizona-California-Nevada, USA, and Sonora-Baja California Norte, Mexico

USGS Publications Warehouse

Mueller, G.A.; Marsh, P.C.; Minckley, W.L.

2005-01-01

The lower Colorado is among the most regulated rivers in the world. It ranks as the fifth largest river in volume in the coterminous United States, but its flow is fully allocated and no longer reaches the sea. Lower basin reservoirs flood nearly one third of the river channel and store 2 years of annual flow. Diverted water irrigates 1.5 million ha of cropland and provides water for industry and domestic use by 22 million people in the southwestern United States and northern Mexico. The native fish community of the lower Colorado River was among the most unique in the world, and the main stem was home to nine freshwater species, all of which were endemic to the basin. Today, five are extirpated, seven are federally endangered, and three are being reintroduced through stocking. Decline of the native fauna is attributed to predation by nonnative fishes and physical habitat degradation. Nearly 80 alien species have been introduced, and more than 20 now are common. These nonnative species thrived in modified habitats, where they largely eliminated the native kinds. As a result, the lower Colorado River has the dubious distinction of being among the few major rivers of the world with an entirely introduced fish fauna. ?? 2005 by the American Fisheries Society.

In Brief: Improving Mississippi River water quality

NASA Astrophysics Data System (ADS)

Showstack, Randy

2007-10-01

If water quality in the Mississippi River and the northern Gulf of Mexico is to improve, the U.S. Environmental Protection Agency (EPA) needs to take a stronger leadership role in implementing the federal Clean Water Act, according to a 16 October report from the U.S. National Research Council. The report notes that EPA has failed to use its authority to coordinate and oversee activities along the river. In addition, river states need to be more proactive and cooperative in efforts to monitor and improve water quality, and the river should be monitored and evaluated as a single system, the report indicates. Currently, the 10 states along the river conduct separate and widely varying water quality monitoring programs. ``The limited attention being given to monitoring and managing the Mississippi's water quality does not match the river's significant economic, ecological, and cultural importance,'' said committee chair David A. Dzombak, director of the Steinbrenner Institute for Environmental Education and Research at Carnegie Mellon University, Pittsburgh, Pa. The report notes that while measures taken under the Clean Water Act have successfully reduced much point source pollution, nutrient and sediment loads from nonpoint sources continue to be significant problems. For more information, visit the Web site: http://books.nap.edu/catalog.php?record_id=12051.

Butyltin compounds in River Otters (Lutra canadensis) from the Northwestern United States

USGS Publications Warehouse

Kannan, K.; Grove, Robert A.; Senthilkumar, K.; Henny, Charles J.; Geisy, J.P.

1999-01-01

Butyltin compounds, including mono-, di-, and tributyltin (MBT, DBT, and TBT) were measured in livers of 40 adult river otters (Lutra canadensis) collected from rivers and coastal bays in Washington and Oregon, USA. Butyltins were found in all the river otters, at a concentration range of 8.5a??2,610 ng/g, WW. The greatest concentration of total butyltins of 2,610 ng/g, WW, was found in a river otter collected in Puget Sound from Fort Ward, Washington. River otters collected near areas with major shipping activities, such as the Puget Sound, contained significantly greater concentrations (geometric mean: 367 ng/g, WW) of butyltins than those from rivers. Among butyltin compounds, MBT and DBT predominated in livers. The concentrations of butyltins in river otters ranged from comparable (Puget Sound) to less (rivers) than what was found in coastal cetaceans.

Physical and chemical characteristics of water from the hydrographic basin of the Poxim River, Sergipe State, Brazil.

PubMed

de Aguiar Netto, Antenor Oliveira; Garcia, Carlos Alexandre Borges; Hora Alves, José do Patrocínio; Ferreira, Robério Anastácio; Gonzaga da Silva, Marinoé

2013-05-01

The Poxim River is one of Sergipe State's major waterways. It supplies water to the State capital, Aracaju, but is threatened by urban and agricultural developments that compromise both the quantity and the quality of the water. This has direct impacts on the daily lives of the region's population. In this work, a multivariate analytical approach was used to investigate the physical and chemical characteristics of the water in the river basin. Four sampling campaigns were undertaken, in November 2005, and in February, May, and September 2006, at 15 sites distributed along the Poxim. The parameters analyzed were conductivity, turbidity, color, total dissolved solids, dissolved oxygen, alkalinity, hardness, chlorophyll-a, and nutrients (total phosphorus, dissolved orthophosphate, nitrite, nitrate, ammoniacal nitrogen, and total nitrogen). Dissolved oxygen contents were very low in the Poxim-Açu River (1.0-2.8), the Poxim River (1.6-4.6), and the estuarine region (1.7-5.1), due to the dumping of wastes and discharges of domestic and industrial effluents containing organic matter into fluvial and estuarine regions of the Poxim. Factor analysis identified five components that were indicative of the quality of the water, and that explained 81.73 % of the total variance.

Sports Participation and Social Personality Variable of Students in Secondary Schools in Central Senatorial District of Cross River State, Nigeria

ERIC Educational Resources Information Center

Edim, M. E.; Odok, E. A.

2015-01-01

The main thrust of this study was to investigate sports participation and social personality variable of students in secondary schools in Central Senatorial District of Cross River State, Nigeria. To achieve the purpose of this study, one hypothesis was formulated to guide the study. Literature review was carried out according to the variable of…

Assessment of the Effects of Problem Solving Instructional Strategies on Students' Achievement and Retention in Chemistry with Respect to Location in Rivers State

ERIC Educational Resources Information Center

Nbina, Jacobson Barineka; Obomanu, B. Joseph

2011-01-01

We report a study focused on how problem-solving instructional strategies would affect students' achievement and retention in Chemistry with particular reference to River State. A pre-test, post-test, non-equivalent control group design was adopted. Two research questions and two hypotheses were respectively answered and tested. Purposive and…

Instructional Supervisory Practices and Teachers' Role Effectiveness in Public Secondary Schools in Calabar South Local Government Area of Cross River State, Nigeria

ERIC Educational Resources Information Center

Sule, Mary Anike; Eyiene, Ameh; Egbai, Mercy E.

2015-01-01

The study investigated the relationship between instructional supervisory practices and teachers' role effectiveness in public secondary schools in Calabar South Local Government Area of Cross River State. Two null hypotheses were formulated to guide the study. Ex-post facto research design was adopted for the study. The population of the study…

Comparative Analysis of Selected Motor Fitness Profile of Football Referees in Cross River and AKWA IBOM States, Nigeria

ERIC Educational Resources Information Center

Ogabor, J. O.; Sanusi, M.; Saulawa, A. I.

2015-01-01

The purpose of this study was to compare selected motor fitness profile of football referees in Cross River and Akwa Ibom States. Motor fitness profiles compared were running speed and agility of the referees. Standardized equipment and procedures were employed in the tests. To achieve the objectives of the study, two research hypotheses were…

A network model to help land managers predict and prevent spread of invasive plants from roads to river systems in Alaska

Treesearch

Matthew J. Macander; Tricia L. Wurtz

2007-01-01

Alaska has relatively few invasive plants, and most of them are found only along the state's limited road system. Melilotus alba, or sweetclover, is one of the most widely distributed invasives in the state. Melilotus has recently moved from roadsides to the flood plains of at least three glacial rivers. We developed a network...

Promoting Peace Education for Behaviourial Changes in Public Secondary Schools in Calabar Municipality Council Area, Cross River State, Nigeria

ERIC Educational Resources Information Center

Uko, E. S.; Igbineweka, P. O.; Odigwe, F. N.

2015-01-01

This study aimed at investigating the promotion of peace education for behavioural changes in public secondary schools in Calabar Municipal Council Area of Cross River State. A descriptive survey design was adopted for the study. A set of questionnaire items were validated and used for the collection of data involving 310 respondents, selected…

Climate change effects on forests, water resources, and communities of the Delaware River Basin

Treesearch

Will Price; Susan Beecher

2014-01-01

The Delaware River provides drinking water to 5 percent of the United States, or approximately 16.2 million people living in 4 states, 42 counties, and over 800 municipalities. The more than 1.5 billion gallons withdrawn or diverted daily for drinking water is delivered by more than 140 purveyors, yet constitutes less than 20 percent of the average daily withdrawals....

Bridging Policy Implementation Gaps in Nigerian Education System: A Case Study of Universal Basic Education Programme in Cross River State, Nigeria

ERIC Educational Resources Information Center

Ogbiji, Joseph Etiongbie; Ogbiji, Sylvanus Achua

2016-01-01

This research focuses on identifying policy gaps in the implementation of Universal Basic Education (UBE) programme in Nigeria, with Cross River State being the study area. The three research questions used for the research center on the extent of the freeness of the UBE, the extent to which the programme has stimulated educational consciousness…

HIV/AIDS Knowledge, Attitudes, and Opinions among Adolescents in the River States of Nigeria

ERIC Educational Resources Information Center

Wodi, Ben E.

2005-01-01

Sub-Saharan Africa remains the epicenter of the global HIV/AIDS pandemic (Taylor et al., 2003; UNAIDS/UNICEF/WHO, 2000; Eaton, Flishera and Arob, 2002; Prat, et al., 2000). Nigeria is one of the most afflicted sub-Saharan nations (UNAIDS, 2002). Rivers State, a major industrial area of Nigeria and the nerve center of the oil industry, represents a…

Education, fish consumption, well water, chicken coops, and cooking fires: Using biogeochemistry and ethnography to study exposure of children from Yucatan, Mexico to metals and arsenic.

PubMed

Arcega-Cabrera, Flor; Fargher, Lane F

2016-10-15

Around the world, the nocuous health effects of exposure to environmental contaminants, especially metals and Arsenic, are a growing health concern. This is especially the case in Mexico, where corruption and ineffective political administration are contributing to increasing deterioration in the environment. Importantly, shallow soils and the karstic nature of bedrock in Yucatan, Mexico make the subterranean aquifer especially susceptible to contamination because contaminates are carried to it with little resistance. Given these environmental conditions, we developed a multi/interdisciplinary project to evaluate the impact of metal and Arsenic pollution on a sample of 107 children, ages 6 to 9years, living in the urban areas of Progreso, Merida, and Ticul, in the State of Yucatan using urine and blood samples. In addition, ethnographic research was carried out in the homes of the children that participated in the study to identify potential exposure pathways. This research proved invaluable because the complexity of human social organization, lifestyles, and geographical patterning create an intricate array of exposure pathways that vary across social sectors and geographic space. In the following article, we use nonparametric univariate statistical analysis to reveal potential exposure pathways among sub-populations included in our sample. These analyses show that children from poor/marginal families tend to be exposed to Copper, Lead, and Nickel; whereas, children, from wealthier families, tend to be exposed to Cadmium, Arsenic, and inorganic Copper (Copper Sulfate). Copyright © 2016 Elsevier B.V. All rights reserved.

33 CFR 117.895 - Wallooskee River.

Code of Federal Regulations, 2012 CFR

2012-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.895 Wallooskee River. The draw of the Oregon State secondary highway bridge, mile 1.0 near Astoria, shall open on signal if at least 48 hours...

33 CFR 117.895 - Wallooskee River.

Code of Federal Regulations, 2013 CFR

2013-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.895 Wallooskee River. The draw of the Oregon State secondary highway bridge, mile 1.0 near Astoria, shall open on signal if at least 48 hours...

33 CFR 117.895 - Wallooskee River.

Code of Federal Regulations, 2014 CFR

2014-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.895 Wallooskee River. The draw of the Oregon State secondary highway bridge, mile 1.0 near Astoria, shall open on signal if at least 48 hours...

33 CFR 117.895 - Wallooskee River.

Code of Federal Regulations, 2011 CFR

2011-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.895 Wallooskee River. The draw of the Oregon State secondary highway bridge, mile 1.0 near Astoria, shall open on signal if at least 48 hours...

33 CFR 117.895 - Wallooskee River.

Code of Federal Regulations, 2010 CFR

2010-07-01

... DRAWBRIDGE OPERATION REGULATIONS Specific Requirements Oregon § 117.895 Wallooskee River. The draw of the Oregon State secondary highway bridge, mile 1.0 near Astoria, shall open on signal if at least 48 hours...

22. Schuylkill River Bridge. Philadelphia, Philadelphia Co., PA. Sec. 1101, ...

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

22. Schuylkill River Bridge. Philadelphia, Philadelphia Co., PA. Sec. 1101, MP 87.14. - Northeast Railroad Corridor, Amtrak route between Delaware-Pennsylvania & Pennsylvania-New Jersey state lines, Philadelphia, Philadelphia County, PA

21. Schuylkill River Bridge. Philadelphia, Philadelphia Co., PA. Sec. 1101, ...

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

21. Schuylkill River Bridge. Philadelphia, Philadelphia Co., PA. Sec. 1101, MP 87.14. - Northeast Railroad Corridor, Amtrak route between Delaware-Pennsylvania & Pennsylvania-New Jersey state lines, Philadelphia, Philadelphia County, PA

23. VIEW, LOOKING SOUTH, SHOWING GASOLINEPOWERED EMERGENCY GENERATOR, WITH MAIN ...

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

23. VIEW, LOOKING SOUTH, SHOWING GASOLINE-POWERED EMERGENCY GENERATOR, WITH MAIN TRANSMISSION AT LEFT FOREGROUND - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

6. VIEW OF BRIDGE, LOOKING DIRECTLY EAST THROUGH TRUSS FROM ...

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

6. VIEW OF BRIDGE, LOOKING DIRECTLY EAST THROUGH TRUSS FROM SHOULDER OF ROAD - Shenandoah River Bridge, Spanning North fork of Shenandoah River on Virginia State Route 767, Quicksburg, Shenandoah County, VA

78. VIEW SHOWING PLACEMENT OF LIFE SPAN SHOE ON PIER ...

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

78. VIEW SHOWING PLACEMENT OF LIFE SPAN SHOE ON PIER 6, LOOKING NORTH, March 5, 1935 - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

14. VIEW NORTHEAST OF UNDERSIDE OF PENNSYLVANIA PETIT TRUSS, SHOWING ...

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

14. VIEW NORTHEAST OF UNDERSIDE OF PENNSYLVANIA PETIT TRUSS, SHOWING SLEEPERS, TRANSVERSE BEAMS, AND CONCRETE PIERS - New River Bridge, Spanning New River at State Route 623, Pembroke, Giles County, VA

36 CFR 7.5 - Mount Rainier National Park.

Code of Federal Regulations, 2011 CFR

2011-07-01

.... (ii) The Mather Memorial Parkway (State Route 410) from its intersection with the White River Road north to the park boundary. (iii) The White River Road from its intersection with the Mather Memorial...

36 CFR 7.5 - Mount Rainier National Park.

Code of Federal Regulations, 2014 CFR

2014-07-01

.... (ii) The Mather Memorial Parkway (State Route 410) from its intersection with the White River Road north to the park boundary. (iii) The White River Road from its intersection with the Mather Memorial...

36 CFR 7.5 - Mount Rainier National Park.

Code of Federal Regulations, 2010 CFR

2010-07-01

.... (ii) The Mather Memorial Parkway (State Route 410) from its intersection with the White River Road north to the park boundary. (iii) The White River Road from its intersection with the Mather Memorial...

36 CFR 7.5 - Mount Rainier National Park.

Code of Federal Regulations, 2012 CFR

2012-07-01

.... (ii) The Mather Memorial Parkway (State Route 410) from its intersection with the White River Road north to the park boundary. (iii) The White River Road from its intersection with the Mather Memorial...

36 CFR 7.5 - Mount Rainier National Park.

Code of Federal Regulations, 2013 CFR

2013-07-01

.... (ii) The Mather Memorial Parkway (State Route 410) from its intersection with the White River Road north to the park boundary. (iii) The White River Road from its intersection with the Mather Memorial...

Flood-inundation maps for the Hoosic River, North Adams and Williamstown, Massachusetts, from the confluence with the North Branch Hoosic River to the Vermont State line

USGS Publications Warehouse

Lombard, Pamela J.; Bent, Gardner C.

2015-01-01

The availability of the flood-inundation maps, combined with information regarding current (near real-time) stage from USGS streamgage Hoosic River near Williamstown, and forecasted flood stages from the National Weather Service Advanced Hydrologic Prediction Service will provide emergency management personnel and residents with information that is critical for flood response activities such as evacuations and road closures, and post-flood recovery efforts. The flood-inundation maps are nonregulatory, but provide Federal, State, and local agencies and the public with estimates of the potential extent of flooding during selected peak-flow events.

Development of communication networks and water quality early warning detection systems at drinking water utilities in the Ohio River Valley Basin.

PubMed

Schulte, J G; Vicory, A H

2005-01-01

Source water quality is of major concern to all drinking water utilities. The accidental introduction of contaminants to their source water is a constant threat to utilities withdrawing water from navigable or industrialized rivers. The events of 11 September, 2001 in the United States have heightened concern for drinking water utility security as their source water and finished water may be targets for terrorist acts. Efforts are underway in several parts of the United States to strengthen early warning capabilities. This paper will focus on those efforts in the Ohio River Valley Basin.

Parvicapsula minibicornis in anadromous sockeye (Oncorhynchus nerka) and coho (Oncorhynchus kisutch) salmon from tributaries of the Columbia River.

PubMed

Jones, Simon; Prosperi-Porta, Gina; Dawe, Sheila; Taylor, Kimberley; Goh, Benjamin

2004-08-01

The myxosporean parasite Parvicapsula minibicornis is described from adult sockeye and coho salmon during spawning migrations in tributaries of the Columbia River in Canada and the United States. These observations extend the known distribution of this parasite from the Fraser River drainage basin. The parasite was identified in Columbia River salmonids using polymerase chain reaction (PCR) and by in situ hybridization, but unlike in Fraser River salmon, it was not observed in conventional histological preparations of the kidney. Prevalence of the parasite determined by PCR was higher in spawning sockeye from the Fraser River than in those from the Okanagan River. Our ability to explain the relatively low prevalence and absence of clinical P. minibicornis infections in Columbia River salmon is hampered by our poor understanding of the life cycle of this parasite.

Groundwater quality in the Yuba River and Bear River Watersheds, Sierra Nevada, California

USGS Publications Warehouse

Fram, Miranda S.; Jasper, Monica; Taylor, Kimberly A.

2017-09-27

Groundwater provides more than 40 percent of California’s drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The GAMA Program’s Priority Basin Project assesses the quality of groundwater resources used for drinking water supply and increases public access to groundwater-quality information. In the Yuba River and Bear River Watersheds of the Sierra Nevada, many rural households rely on private wells for their drinking water supplies. 

Medical Department, United States Army. Wound Ballistics for World War II.

DTIC Science & Technology

1962-01-01

Georgia Island at Zanana Beach between 2 and 6 July to pro- ceed to a line of departure on the Barike River. After considerable fighting, with heavy...1 mile of the Barike River along the Munda trail. At 1100 hours on 19 July, when the battalion was advancing along this trail, it came under...automatic weapons fire at the Barike River; several men were killed and several wounded. The river was not crossed until 20 July, CASUALTY SURVEY, NEW GEORGIA

River turbidity and sediment loads during dam removal

USGS Publications Warehouse

Warrick, Jonathan A.; Duda, Jeffrey J.; Magirl, Christopher S.; Curran, Chris A.

2012-01-01

Dam decommissioning has become an important means for removing unsafe or obsolete dams and for restoring natural fluvial processes, including discharge regimes, sediment transport, and ecosystem connectivity [Doyle et al., 2003]. The largest dam-removal project in history began in September 2011 on the Elwha River of Washington State (Figure 1a). The project, which aims to restore the river ecosystem and increase imperiled salmon populations that once thrived there, provides a unique opportunity to better understand the implications of large-scale river restoration.

Baseflow and stormflow metal fluxes from two small agricultural catchments in the Coastal Plain of the Chesapeake Bay Basin, United States

USGS Publications Warehouse

Miller, C.V.; Foster, G.D.; Majedi, B.F.

2003-01-01

Annual yields (fluxes per unit area) of Al, Mn, Fe, Ni, Cd, Pb, Zn, Cu, Cr, Co, As and Se were estimated for two small non-tidal stream catchments on the Eastern Shore of the Chesapeake Bay, United States - a poorly drained dissected-upland watershed in the Nanticoke River Basin, and a well-drained feeder tributary in the lower reaches of the Chester River Basin. Both watersheds are dominated by agriculture. A hydrograph-separation technique was used to determine the baseflow and stormflow components of metal yields, thus providing important insights into the effects of hydrology and climate on the transport of metals. Concentrations of suspended-sediment were used as a less-costly proxy of metal concentrations which are generally associated with particles. Results were compared to other studies in Chesapeake Bay and to general trends in metal concentrations across the United States. The study documented a larger than background yield of Zn and Co from the upper Nanticoke River Basin and possibly enriched concentrations of As, Cd and Se from both the upper Nanticoke River and the Chesterville Branch (a tributary of the lower Chester River). The annual yield of total Zn from the Nanticoke River Basin in 1998 was 18,000 g/km2/a, and was two to three times higher than yields reported from comparable river basins in the region. Concentrations of Cd also were high in both basins when compared to crustal concentrations and to other national data, but were within reasonable agreement with other Chesapeake Bay studies. Thus, Cd may be enriched locally either in natural materials or from agriculture.

Use of remote-sensing techniques to survey the physical habitat of large rivers

USGS Publications Warehouse

Edsall, Thomas A.; Behrendt, Thomas E.; Cholwek, Gary; Frey, Jeffery W.; Kennedy, Gregory W.; Smith, Stephen B.; Edsall, Thomas A.; Behrendt, Thomas E.; Cholwek, Gary; Frey, Jeffrey W.; Kennedy, Gregory W.; Smith, Stephen B.

1997-01-01

Remote-sensing techniques that can be used to quantitatively characterize the physical habitat in large rivers in the United States where traditional survey approaches typically used in small- and medium-sized streams and rivers would be ineffective or impossible to apply. The state-of-the-art remote-sensing technologies that we discuss here include side-scan sonar, RoxAnn, acoustic Doppler current profiler, remotely operated vehicles and camera systems, global positioning systems, and laser level survey systems. The use of these technologies will permit the collection of information needed to create computer visualizations and hard copy maps and generate quantitative databases that can be used in real-time mode in the field to characterize the physical habitat at a study location of interest and to guide the distribution of sampling effort needed to address other habitat-related study objectives. This report augments habitat sampling and characterization guidance provided by Meador et al. (1993) and is intended for use primarily by U.S. Geological Survey National Water Quality Assessment program managers and scientists who are documenting water quality in streams and rivers of the United States.

77 FR 21805 - Notice of Intent To Collect Fees on Public Land in Mesa County, CO (Ruby-Horsethief Stretch of...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-11

... Intent To Collect Fees on Public Land in Mesa County, CO (Ruby-Horsethief Stretch of the Colorado River... fees for overnight camping on the Ruby-Horsethief stretch of the Colorado River, between Loma, Colorado, and the Colorado State Line, Mesa County, Colorado. The Ruby-Horsethief stretch of the Colorado River...

MACROINVERTEBRATE ASSEMBLAGES OF THE ST. CROIX AND WISCONSIN RIVERS: AN INITIAL APPLICATION OF THE LARGE RIVER BIOASSESSMENT PROTOCOL (LR-BP) IN THE MIDWESTERN UNITED STATES

EPA Science Inventory

Since passage of the Clean Water Act, government agencies have made extensive use of biomonitoring protocols to report on the quality of wadeable streams and rivers. Non-wadeable systems have been largely overlooked because of sampling difficulties and a lack of appropriate metho...

Combining computer and manual overlays—Willamette River Greenway Study

Treesearch

Asa Hanamoto; Lucille Biesbroeck

1979-01-01

We will present a method of combining computer mapping with manual overlays. An example of its use is the Willamette River Greenway Study produced for the State of Oregon Department of Transportation in 1974. This one year planning study included analysis of data relevant to a 286-mile river system. The product is a "wise use" plan which conserves the basic...

The Eel River, northwestern California; high sediment yields from a dynamic landscape

Treesearch

Thomas E. Lisle

1990-01-01

The Eel River draining the Coast Range of northwestern California has the highest recorded average suspended sediment yield per drainage area of any river of its size or larger unaffected by volcanic eruptions or active glaciers in the conterminous United States (1,720 t/km 2 yr from 9,390 km 2 ; Brown and Ritter, 1971).

HOME ON THE BIG RIVER: ASSESSING HABITAT CONDITION IN THE GREAT RIVERS OF THE CENTRAL UNITED STATES, 1ST PRESENTATION IN 2007

EPA Science Inventory

This research looks at ways to combine data from the EMAP-GRE 2004 and 2005 sampling seasons on the Missouri, Upper Mississippi, and Ohio Rivers into habitat indices that can be used to compare littoral and riparian habitat quality and human disturbance impacts in the north centr...

33 CFR 207.310 - Mississippi River at Keokuk, Iowa; operation of power dam by Mississippi River Power Co.

Code of Federal Regulations, 2010 CFR

2010-07-01

... the dam until further orders: (b) Excepting as specially provided in this section the normal flow of... when the natural flow of the Mississippi River is falling or when such natural flow is less than..., such permit to state the period which such ponding may cover and the maximum variation in stage below...

Assessing river recreation use and perceptions of environmental quality trends on Michigan's upper Manistee River

Treesearch

Charles Nelson; Brian Valentine

2003-01-01

Through vehicle counts and windshield surveys at 43 public access points and a mail questionnaire to shoreline property owners, Michigan State University researchers estimated the recreation effort on a 55-mile stretch of Michigan's upper Manistee River from April 28 - September 3, 2001. In addition, public access point user satisfaction, perceived trends in the...

Waterborne Commerce of the United States, Calendar Year 1986. Part 5. Waterways and Harbors, National Summaries

DTIC Science & Technology

1988-05-31

COLUMBIA RIVER ’ WENATCHEE , WASH., TO INTERNATIONAL SOUNDRYJ COEUR DfALENE LAKE............................................................ 39,625...1986 ............ .............................. 28 8 Comparative Statement of Traffic on the Mississippi River System, 1975-1986. 29 9 Comparative...Statement of Traffic on the Mississippi River from Minneapolis, Minn., to the Mouth of Passes, 1975 - 1986 ... .............. . 29 10 Domestic Barge

Flood discharges and hydraulics near the mouths of Wolf Creek, Craig Branch, Manns Creek, Dunloup Creek, and Mill Creek in the New River Gorge National River, West Virginia

USGS Publications Warehouse

Wiley, J.B.

1994-01-01

The U.S. Geological Survey, in cooperation with the National Park Service, studied the frequency and magnitude of flooding near the mouths of five tributaries to the New River in the New River Gorge National River. The 100-year peak discharge at each tributary was determined from regional frequency equations. The 100-year discharge at Wolf Creek, Craig Branch, Manns Creek, Dunloup Creek, and Mill Creek was 3,400 cubic feet per second, 640 cubic feet per second, 8,200 cubic feet per second, 7,100 cubic feet per second, and 9,400 cubic feet per second, respectively. Flood elevations for each tributary were determined by application of a steady-state, one-dimensional flow model. Manning's roughness coefficients for the stream channels ranged from 0.040 to 0.100. Bridges that would be unable to contain the 100-year flood within the bridge opening included: the State Highway 82 bridge on Wolf Creek, the second Fayette County Highway 25 bridge upstream from the confluence with New River on Dunloup Creek, and an abandoned log bridge on Mill Creek.

Quantitative Testing of Bedrock Incision Models, Clearwater River, WA

NASA Astrophysics Data System (ADS)

Tomkin, J. H.; Brandon, M.; Pazzaglia, F.; Barbour, J.; Willet, S.

2001-12-01

The topographic evolution of many active orogens is dominated by the process of bedrock channel incision. Several incision models based around the detachment limited shear-stress model (or stream power model) which employs an area (A) and slope (S) power law (E = K Sn Am) have been proposed to explain this process. They require quantitative assessment. We evaluate the proposed incision models by comparing their predictions with observations obtained from a river in a tectonically active mountain range: the Clearwater River in northwestern Washington State. Previous work on river terraces along the Clearwater have provided long-term incision rates for the river, and in conjunction with previous fission track studies it has also been determined that there is a long-term balance between river incision and rock uplift. This steady-state incision rate data allows us, through the use of inversion methods and statistical tests, to determine the applicability of the different incision models for the Clearwater. None of the models successfully explain the observations. This conclusion particularly applies to the commonly used detachment limited shear-stress model (or stream power model), which has a physically implausible best fit solution and systematic residuals for all the predicted combinations of m and n.

The International Year of Light 2015 and its impact on educational activities

NASA Astrophysics Data System (ADS)

Curticapean, Dan; Vauderwange, Oliver; Wozniak, Peter; Mandal, Avikarsha

2016-09-01

The International Year of Light and Light-Based Technologies 2015 (IYL 2015) was celebrated around the world. Worldwide activities were organized to highlight the impact of optics and photonics on life, science, economics, arts and culture, and also in education. With most of our activities at Offenburg University of Applied Sciences (Offenburg/Germany), we reached our own students and the general population of our region: - University for Children: "The Magic of Light" winter lecture program and "Across the Universe with Relativity and Quantum Theory" summer lecture program - "Students Meet Scientists" - "A Century of General Relativity Theory" lecture program Nevertheless, with some of our activities we also engaged a worldwide audience: - IYL 2015 art poster collection (Magic of Light and No Football, Just Photonics) - Smart Interactive Projection - Twitter Wall - "Invisible Light" - Live broadcasting of the total lunar eclipse - Film Festival Merida Mexico The authors will highlight recent activities at our university dedicated to promote, celebrate, and create a legacy for the IYL 2015.

Rapunzel Loves Merida: Melodramatic Expressions of Lesbian Girlhood and Teen Romance in Tangled, Brave, and Femslash.

PubMed

Kapurch, Katie

2015-01-01

This article explores the melodramatic expression of lesbian girlhood and teen romance in Disney's Tangled (2010) and Disney Pixar's Brave (2012), as well as "Meripunzel" femslash, fan-authored romantic pairings of the animations' female protagonists. First, Anne Sexton's poem, "Rapunzel," offers a literary precedent for exploring lesbian themes in the fairy tale. The next section shows how Tangled and Brave invoke the narrative conventions of the family melodrama. This generic association reveals the films' uses of rhetoric familiar to youth coming-out narratives, as well as other visual and aural coding suggestive of queer styles. The last section shows how Meripunzel femslash taps into the films' existing melodramatic narrative forms and visual aesthetics, rehearsing their coming-out rhetoric while addressing the pleasures of and problems facing lesbian teen romance. I conclude by problematizing the often conventional expressions of lesbian girlhood in femslash, ultimately arguing for their empowering potential, especially as they indicate revised definitions of "princess."

CANVAS FINISH TO REMOVE FLOAT MARKS. View is to the ...

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

CANVAS FINISH TO REMOVE FLOAT MARKS. View is to the northwest of deck finishing operations - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

63. VIEW OF THE SHOOFLY BRIDGE LIFT SPAN BEING FLOATED ...

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

63. VIEW OF THE SHOOFLY BRIDGE LIFT SPAN BEING FLOATED INTO PLACE, LOOKING NORTH, January 29, 1935 - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

14. View to southwest. View through truss along centerline from ...

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

14. View to southwest. View through truss along centerline from below deck. (65mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

20. View to southeast. Aerial view of bridge in setting; ...

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

20. View to southeast. Aerial view of bridge in setting; downstream side. (135mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

COUNTERWEIGHT FOOTINGS ON EAST SIDE. View is to the north ...

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

COUNTERWEIGHT FOOTINGS ON EAST SIDE. View is to the north from the old suspension bridge - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

13. View to northeast. View along centerline from Humboldt County ...

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

13. View to northeast. View along centerline from Humboldt County side of bridge. (90mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

JIGGER STICK USED IN ERECTION. Shown on highline, direction of ...

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

JIGGER STICK USED IN ERECTION. Shown on highline, direction of view is probably to the north - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

12. View to southwest. View along centerline from Trinity County ...

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

12. View to southwest. View along centerline from Trinity County side of bridge. (90mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

11. View to southeast. More distant overview of bridge in ...

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

11. View to southeast. More distant overview of bridge in setting; downstream side. (135mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

Factsheet about Anacostia's Great Outdoors

EPA Pesticide Factsheets

In partnership with the federal government, the District ofColumbia and State of Maryland are working to restore theAnacostia River and provide safe and convenient means forpeople to access the Anacostia River and enjoy the outdoors.

28. 'TOWER DESIGN NO. 11, ADAPTED FROM NO. 9,' drawn ...

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

28. 'TOWER DESIGN NO. 11, ADAPTED FROM NO. 9,' drawn by project architect Alfred Eichler, undated, ca. 1934. - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

DOE Office of Scientific and Technical Information (OSTI.GOV)

Abernethy, C. Scott; Neitzel, Duane A.; Lusty, E. William

The Bonneville Power Administration (BPA), the United States Bureau of Reclamation (USSR), and the Washington State Department of Ecology (WDOE) are funding the construction and evaluation of fish passage facilities and fish protection facilities at irrigation and hydroelectric diversions in the Yakima River Basin, Washington State. The program provides offsite enhancement to compensate for fish and wildlife losses caused by hydroelectric development throughout the Columbia River Basin, and addresses natural propagation of salmon to help mitigate the impact of irrigation in the Yakima River Basin. This report evaluates the flow characteristics of the screening facilities. Studies consisted of velocity measurementsmore » taken in front of the rotary drum screens and within the fish bypass systems during peak flows. Measurements of approach velocity and sweep velocity were emphasized in these studies; however, vertical velocity was also measured. 5 refs., 18 figs., 15 tabs.« less

A brief history and summary of the effects of river engineering and dams on the Mississippi River system and delta

USGS Publications Warehouse

Alexander, Jason S.; Wilson, Richard C.; Green, W. Reed

2012-01-01

The U.S. Geological Survey Forecast Mekong project is providing technical assistance and information to aid management decisions and build science capacity of institutions in the Mekong River Basin. A component of this effort is to produce a synthesis of the effects of dams and other engineering structures on large-river hydrology, sediment transport, geomorphology, ecology, water quality, and deltaic systems. The Mississippi River Basin (MRB) of the United States was used as the backdrop and context for this synthesis because it is a continental scale river system with a total annual water discharge proportional to the Mekong River, has been highly engineered over the past two centuries, and the effects of engineering have been widely studied and documented by scientists and engineers. The MRB is controlled and regulated by dams and river-engineering structures. These modifications have resulted in multiple benefits including navigation, flood control, hydropower, bank stabilization, and recreation. Dams and other river-engineering structures in the MRB have afforded the United States substantial socioeconomic benefits; however, these benefits also have transformed the hydrologic, sediment transport, geomorphic, water-quality, and ecologic characteristics of the river and its delta. Large dams on the middle Missouri River have substantially reduced the magnitude of peak floods, increased base discharges, and reduced the overall variability of intraannual discharges. The extensive system of levees and wing dikes throughout the MRB, although providing protection from intermediate magnitude floods, have reduced overall channel capacity and increased flood stage by up to 4 meters for higher magnitude floods. Prior to major river engineering, the estimated average annual sediment yield of the Mississippi River Basin was approximately 400 million metric tons. The construction of large main-channel reservoirs on the Missouri and Arkansas Rivers, sedimentation in dike fields, and protection of channel banks by revetments throughout the basin, have reduced the overall sediment yield of the MRB by more than 60 percent. The primary alterations to channel morphology by dams and other engineering projects have been (1) channel simplification and reduced dynamism; (2) lowering of channel-bed elevation; and (3) disconnection of the river channel from the flood plain, except during extreme flood events. Freshwater discharge from the Mississippi River and its associated sediment and nutrient loads strongly influence the physical and biological components in the northern Gulf of Mexico. Ninety percent of the nitrogen load reaching the Gulf of Mexico is from nonpoint sources with about 60 percent coming from fertilizer and mineralized soil nitrogen. Much of the phosphorus is from animal manure from pasture and rangelands followed by fertilizer applied to corn and soybeans. Increased nutrient enrichment in the northern Gulf of Mexico has resulted in the degradation of water quality as more phytoplankton grow, which increases turbidity and depletes oxygen in the lower depths creating what is known as the "dead zone." In 2002, the dead zone was 22,000 square kilometers (km2), an area similar to the size of the State of Massachusetts. Changes in the flow regime from engineered structures have had direct and indirect effects on the fish communities. The navigation pools in the upper Mississippi River have aged, and these overwintering habitats, which were created when the pools filled, have declined as sedimentation reduces water depth. Reproduction of paddlefish may have been adversely affected by dams, which impede access to suitable spawning habitats. Fishes that inhabit swift-current habitats in the unimpounded lower Mississippi River have not declined as much as in the upper Mississippi River. The decline of the pallid sturgeon may be attributable to channelization of the Missouri River above St. Louis, Missouri. The Missouri River supports a rich fish community and remains relatively intact. Nevertheless, the widespread and long history of human intervention in river discharge has contributed to the declines of about 25 percent of the species. The Mississippi River Delta Plain is built from six delta complexes composed of a massive area of coastal wetlands that support the largest commercial fishery in the conterminous United States. Since the early 20th century, approximately 4,900 km2 of coastal lands have been lost in Louisiana. One of the primary mechanisms of wetland loss on the Plaquemines-Balize complex is believed to be the disconnection of the river distributary network from the delta plain by the massive system of levees on the delta top, which prevent overbank flooding and replenishment of the delta top by sediment and nutrient deliveries. Efforts by Federal and State agencies to conserve and restore the Mississippi River Delta Plain began over three decades ago and have accelerated over the past decade. Regardless of these efforts, however, land losses are expected to continue because the reduced upstream sediment supplies are not sufficient to keep up with the projected depositional space being created by the combined forces of delta plain subsidence and global sea-level rise.

Documentation of input datasets for the soil-water balance groundwater recharge model of the Upper Colorado River Basin

USGS Publications Warehouse

Tillman, Fred D.

2015-01-01

The Colorado River and its tributaries supply water to more than 35 million people in the United States and 3 million people in Mexico, irrigating more than 4.5 million acres of farmland, and generating about 12 billion kilowatt hours of hydroelectric power annually. The Upper Colorado River Basin, encompassing more than 110,000 square miles (mi2), contains the headwaters of the Colorado River (also known as the River) and is an important source of snowmelt runoff to the River. Groundwater discharge also is an important source of water in the River and its tributaries, with estimates ranging from 21 to 58 percent of streamflow in the upper basin. Planning for the sustainable management of the Colorado River in future climates requires an understanding of the Upper Colorado River Basin groundwater system. This report documents input datasets for a Soil-Water Balance groundwater recharge model that was developed for the Upper Colorado River Basin.

Drainage areas of the Potomac River basin, West Virginia

USGS Publications Warehouse

Wiley, Jeffrey B.; Hunt, Michelle L.; Stewart, Donald K.

1996-01-01

This report contains data for 776 drainage-area divisions of the Potomac River Basin, from the headwaters to the confluence of the Potomac River and the Shenandoah River. Data, compiled in downstream order, are listed for streams with a drainage area of approximately 2 square miles or larger within West Virginia and for U.S. Geological Survey streamflow-gaging stations. The data presented are the stream name, the geographical limits in river miles, the latitude and longitude of the point, the name of the county, and the 7 1/2-minute quadrangle in which the point lies, and the drainage area of that site. The total drainage area of the Potomac River Basin downstream of the confluence of the Shenandoah River at the State boundary is 9,367.29 square miles.

A hydromorphological framework for the evaluation of e-flows

NASA Astrophysics Data System (ADS)

Bussettini, Martina; Rinaldi, Massimo; Grant, Gordon

2017-04-01

Anthropogenic alteration of hydromorphological processes in rivers is a major factor that diminishes river health and undermines environmental objectives envisaged by river protection policies. Specifying environmental flows to address those impacts can be a key strategy for the maintenance of functional river processes and the achievement of those objectives. Environmental flows are determined by various methods and approaches, based primarily on hydrological and/or hydraulic evaluations, although holistic methodologies, considering the many interacting factors that structure aquatic ecosystems, including sediments, are increasingly used. Hydrological and geomorphological processes are highly coupled and any change in one typically affects the other. The coupling varies over different spatial and temporal scales, and changing either hydrological or geomorphological processes can result in alteration of river habitats, ultimately impacting ecological processes. In spite of these linkages, current restoration approaches typically focus only on changes on hydrological regime as a means promoting ecological enhancements. Neglecting sediment transport and its interaction with flow in shaping riverine habitats is likely to results not only in minor or no enhancements in the ecology, but may also increase the costs of water use. A more integrated view of how human activities jointly affect sediment regime, river morphology and river flows is therefore needed in order to determine the most effective actions to rehabilitate river processes to desired states. These states involve considerations of the combination of intrinsic ("natural") conditions (e.g. river sensitivity and morphological potential, off-site conditions) and socio-economic constraints. The evaluation of such factors, the analysis of different scenarios, and the selection of appropriate actions require the contextualization of river reaches within a wider spatial-temporal hydromorphological framework. Here we present such a general multiscale, process-based hydromorphological framework, and discuss its application to the problem of how best to analyse and estimate e-flows.

Identifying sources of dissolved organic carbon in agriculturally dominated rivers using radiocarbon age dating: Sacramento-San Joaquin River Basin, California

USGS Publications Warehouse

Sickman, James O.; DiGiorgio, Carol L.; Davisson, M. Lee; Lucero, Delores M.; Bergamaschi, Brian A.

2010-01-01

We used radiocarbon measurements of dissolved organic carbon (DOC) to resolve sources of riverine carbon within agriculturally dominated landscapes in California. During 2003 and 2004, average Δ14C for DOC was −254‰ in agricultural drains in the Sacramento–San Joaquin Delta, −218‰ in the San Joaquin River, −175‰ in the California State Water Project and −152‰ in the Sacramento River. The age of bulk DOC transiting the rivers of California’s Central Valley is the oldest reported for large rivers and suggests wide-spread loss of soil organic matter caused by agriculture and urbanization. Using DAX 8 adsorbent, we isolated and measured 14C concentrations in hydrophobic acid fractions (HPOA); river samples showed evidence of bomb-pulse carbon with average Δ14C of 91 and 76‰ for the San Joaquin and Sacramento Rivers, respectively, with older HPOA, −204‰, observed in agricultural drains. An operationally defined non-HPOA fraction of DOC was observed in the San Joaquin River with seasonally computed Δ14C values of between −275 and −687‰; the source of this aged material was hypothesized to be physically protected organic-matter in high clay-content soils and agrochemicals (i.e., radiocarbon-dead material) applied to farmlands. Mixing models suggest that the Sacramento River contributes about 50% of the DOC load in the California State Water Project, and agricultural drains contribute approximately one-third of the load. In contrast to studies showing stabilization of soil carbon pools within one or two decades following land conversion, sustained loss of soil organic matter, occurring many decades after the initial agricultural-land conversion, was observed in California’s Central Valley.

Coastal and lower Elwha River, Washington, prior to dam removal--history, status, and defining characteristics: Chapter 1 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal

USGS Publications Warehouse

Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.; Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.

2011-01-01

Characterizing the physical and biological characteristics of the lower Elwha River, its estuary, and adjacent nearshore habitats prior to dam removal is essential to monitor changes to these areas during and following the historic dam-removal project set to begin in September 2011. Based on the size of the two hydroelectric projects and the amount of sediment that will be released, the Elwha River in Washington State will be home to the largest river restoration through dam removal attempted in the United States. Built in 1912 and 1927, respectively, the Elwha and Glines Canyon Dams have altered key physical and biological characteristics of the Elwha River. Once abundant salmon populations, consisting of all five species of Pacific salmon, are restricted to the lower 7.8 river kilometers downstream of Elwha Dam and are currently in low numbers. Dam removal will reopen access to more than 140 km of mainstem, flood plain, and tributary habitat, most of which is protected within Olympic National Park. The high capture rate of river-borne sediments by the two reservoirs has changed the geomorphology of the riverbed downstream of the dams. Mobilization and downstream transport of these accumulated reservoir sediments during and following dam removal will significantly change downstream river reaches, the estuary complex, and the nearshore environment. To introduce the more detailed studies that follow in this report, we summarize many of the key aspects of the Elwha River ecosystem including a regional and historical context for this unprecedented project.

Conserving large-river fishes: Is the highway analogy an appropriate paradigm

USGS Publications Warehouse

Galat, D.L.; Zweimuller, I.

2001-01-01

A tenet of the flood pulse concept, the highway analogy, states that the mare channel of large floodplain rivers is used by fishes mainly as a route for gaining access to floodplain habitats. We examined this proposition by analyzing habitat use for freshwater fishes in 4 large rivers in the United States (Colorado, Columbia, Mississippi, Missouri) and 4 in Europe (Danube, Rhine, Rho??ne, Volga). Fish species from floodplain segments of each river were classified as fluvial specialist, fluvial dependent, and macrohabitat generalist based on literature and expert opinion. We also summarized the proportion of imperiled and introduced fishes present in each of these categories. The high proportion (mean ?? 1 SD = 29 ?? 17.5%) of fluvial specialist fishes inhabiting north-temperate large rivers was inconsistent with the highway analogy. Most members of the families Petromyzontidae, Acidpenseridae, Hiodontidae, Osmeridae, Salmonidae, and Gobiidae require flowing water during some life stage. Between 29 and 100% of the native fish assemblage was of conservation concern, and from 50 to 85% of these fishes required riverine habitats to complete their life cycles. Macrohabitat generalists are adapted to capitalize on floodplain habitats and composed from 44 to 96% of introduced fishes in the rivers studied. Habitat diversity inherent in main-channel complexes of unaltered large rivers and reestablished in regulated large rivers is essential to meet life-history needs of native fluvial fishes while discouraging expansion of introduced species. Restoration of north-temperate large rivers and their native fish fauna should incorporate the dynamic interplay among main channel, floodplain, and tributary habitats and processes.

Geology and water resources of the Wharton Tract and the Mullica River basin in southern New Jersey

USGS Publications Warehouse

Rhodehamel, Edward C.

1973-01-01

A possibility exists for multiple use of the water resources of the Mullica River through construction of an inexpensive tide barrier at the Garden State Parkway. This would create a fresh water lake in a State forest, park, and recreational area, which would also provide a flexible and economical water supply for much of the Atlantic coastal resort development.

Evaluation of Cross River State Access of Matching Grants for the Implementation of UBE Policies between 2010 and 2014

ERIC Educational Resources Information Center

Enu, Donald Bette; Opoh, Fredrick Awhen; Esu, A. E. O.

2016-01-01

This study focused on the evaluation of access of matching grants for the implementation of UBE policies in upper basic in Cross River State, Nigeria. To achieve the purpose of this study, a research question was posed to guide the study. Data were generated from SUBEB office and downloaded from UBE web site (www.ubec.com). The result was…

Field Dependence-Field Independence Cognitive Style, Gender, Career Choice and Academic Achievement of Secondary School Students in Emohua Local Government Area of Rivers State

ERIC Educational Resources Information Center

Onyekuru, Bruno Uchenna

2015-01-01

This is a descriptive study that investigated the relationships among field dependence-field independence cognitive style and gender, career choice and academic achievement of secondary school students in Emohua Local Government Area of Rivers State, Nigeria. From the initial sample of 320 senior secondary school one (SS1) students drawn from the…

Effects of Insecurity on Community Development Projects in Ogba/Egbema/Ndoni and Ahoada East Local Government Areas of Rivers State, Nigeria

ERIC Educational Resources Information Center

Adekola, G.; Enyiche, C. C.

2017-01-01

The study examined the effects of insecurity on community development projects in Ogba/Egbema/Ndoni and Ahoada East Local Government Areas of Rivers State, Nigeria. The study was guided by two research questions and one null hypothesis. The study adopted a descriptive survey design with a population of 3,211 members of various Community Based…

Influence of Marital Stressors on Role Performance of Married Academic Women in Tertiary Institutions in Cross River State and Need for Counselling Therein

ERIC Educational Resources Information Center

Okpechi, Philip A.; Usani, Michael Okoi

2015-01-01

This study investigated the influence of marital stressors on role performance of married academic women of tertiary institutions in Cross River State. In order to accomplish the purpose of the study, two objectives and corresponding two hypotheses were postulated to guide the study. The survey research design was adopted in the study. A total of…

Parenting Styles as Correlates of Adolescents Drug Addiction among Senior Secondary School Students in Obio-Akpor Local Government Area of Rivers State, Nigeria

ERIC Educational Resources Information Center

Onukwufor, Jonathan N.; Chukwu, Mercy Anwuri

2017-01-01

The study was conducted to find out the relationship between parenting styles and secondary students' drug addiction among adolescents in secondary schools in Obio-Akpor Local Government Area (L.G.A.) of Rivers State Nigeria. The study was guided by three research questions and similar number of null hypotheses. The study adopted a correlation…

Hydraulic and geomorphic monitoring of experimental bridge scour mitigation at selected bridges in Utah, 2003-05

USGS Publications Warehouse

Kenney, Terry A.; McKinney, Tim S.

2006-01-01

Unique bridge scour mitigation designs using concrete A-Jacks were developed by the Utah Department of Transportation and installed at the Colorado River Bridge at State Road 191 and the Green River Bridge at State Road 19. The U.S. Geological Survey monitored stream reaches at these sites by collecting streambed-topography and water-velocity data from 2003 through 2005. These data were acquired annually from a moving boat with an acoustic Doppler current profiler and a differential global positioning system. Raw unordered data were processed and readied for interpolation into organized datasets with DopplerMacros, a set of computer programs. Processed streambed topography data were geostatistically interpolated by using Ordinary Kriging, and inverse distance weighting interpolation was used in the development of the two-dimensional velocity datasets. These organized datasets of topography and velocity were developed for each survey of the two bridge sites. A comparison of the riverbed topography data for each survey was done. An increase in bed elevation related to the installation of the A-Jacks scour countermeasures is evident at the Colorado River Bridge at State Road 191. The three topographic datasets acquired after the installation at the Green River Bridge at State Road 19 show few changes.

Ground-water data collected in the Missouri River basin units in Kansas during 1950

USGS Publications Warehouse

Berry, Delmar W.

1951-01-01

Ground-water studies in the Missouri River basin were begun by the United States Geological Survey during the fall of 1945 as a part of a program for the development of the resources of the basin by the United States Bureau of Reclamation and other Federal Agencies. The studies of the ground-water resources in the part of Kansas that lies within the basin have been coordinated with the cooperative program of ground-water studies already being carried on in Kansas by the United States Geological Survey, the State Geological Survey of Kansas,the Division of Sanitation of the Kansas State Board of Health, and the Division of Water Resources of the Kansas State Board of Agriculture.

Water-quality conditions of the lower Boise River, Ada and Canyon Counties, Idaho, May 1994 through February 1997

USGS Publications Warehouse

Mullins, William H.

1998-01-01

Agricultural land and water use, wastewater treatment facility discharges, land development, road construction, urban runoff, confined-animal feeding operations, reservoir operations, and river channelization affect the water quality and biotic integrity of the lower Boise River between Lucky Peak Dam and the river's mouth at Parma, Idaho. During May 1994 through February 1997, 4 sites on the Boise River, 12 tributary/drain sites, and 3 wastewater treatment facilities were sampled at various intervals during the irrigation (high-flow) and post-irrigation (low-flow) seasons to determine sources, concentrations, and relative loads of nutrients and suspended sediment. Discharge entering the Boise River from the 12 tributary/drain sites and 3 wastewater treatment facilities was measured to determine the nutrient loads being contributed from each source. Total nitrogen, total phosphorus, and suspended sediment concentrations and loads tended to increase in a downstream direction along the Boise River. Among the 15 sources of discharge to the Boise River, 3 southside tributary/drains and the West Boise wastewater treatment facility contributed the largest loads of total nitrogen; the median daily load was more than 2,000 pounds per day. The West Boise wastewater treatment facility contributed the largest median daily load of total phosphorus (810 pounds per day); Dixie Drain contributed the largest median daily load of suspended sediment (26.4 tons per day). Nitrogen-to-phosphorus ratios at the four Boise River sites indicated that phosphorus could be limiting algal growth at the Diversion Dam site, whereas nitrogen could be limiting algal growth at the Glenwood and Middleton sites during some parts of the year. Algal growth in the Boise River near Parma did not appear to be nutrient limited. Because of the complexity of the plumbing system in the lower Boise River (numerous diversions and inflow points), accurate comparisons between discharge and nutrient loads entering the river at measured sites during high-flow sampling periods were difficult. During low-flow sampling periods, southside tributary/drains contributed most of the discharge and total nitrogen load, and wastewater treatment facilities contributed most of the total phosphorus load to the Boise River. During the 50-day period July 18 through September 5, 1996, the Idaho State standard for maximum daily average temperature for coldwater biota was exceeded by 34 percent at Middleton, 48 percent at Caldwell, and 80 percent near Parma. Violations of State standards for primary and secondary contact recreation were observed at all tributary/ drains and in the Boise River near Parma. Median instantaneous concentrations of fecal coliform bacteria exceeded State standards for primary contact recreation at five tributary/drains and exceeded standards for secondary contact recreation at one tributary/drain (Dixie Drain).

Sources and Delivery of Nutrients to the Northwestern Gulf of Mexico from Streams in the South-Central United States

USGS Publications Warehouse

Rebich, R.A.; Houston, N.A.; Mize, S.V.; Pearson, D.K.; Ging, P.B.; Evan, Hornig C.

2011-01-01

SPAtially Referenced Regressions On Watershed attributes (SPARROW) models were developed to estimate nutrient inputs [total nitrogen (TN) and total phosphorus (TP)] to the northwestern part of the Gulf of Mexico from streams in the South-Central United States (U.S.). This area included drainages of the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf hydrologic regions. The models were standardized to reflect nutrient sources and stream conditions during 2002. Model predictions of nutrient loads (mass per time) and yields (mass per area per time) generally were greatest in streams in the eastern part of the region and along reaches near the Texas and Louisiana shoreline. The Mississippi River and Atchafalaya River watersheds, which drain nearly two-thirds of the conterminous U.S., delivered the largest nutrient loads to the Gulf of Mexico, as expected. However, the three largest delivered TN yields were from the Trinity River/Galveston Bay, Calcasieu River, and Aransas River watersheds, while the three largest delivered TP yields were from the Calcasieu River, Mermentau River, and Trinity River/Galveston Bay watersheds. Model output indicated that the three largest sources of nitrogen from the region were atmospheric deposition (42%), commercial fertilizer (20%), and livestock manure (unconfined, 17%). The three largest sources of phosphorus were commercial fertilizer (28%), urban runoff (23%), and livestock manure (confined and unconfined, 23%). ?? 2011 American Water Resources Association. This article is a U.S. Government work and is in the public domain in the USA.

PIER 2. View is to the northeast, looking from Pier ...

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

PIER 2. View is to the northeast, looking from Pier 1 toward Pier 2 from beneath completed bridge - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

3. View to southwest. Oblique view of downstream side of ...

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

3. View to southwest. Oblique view of downstream side of bridge and west pier. (135mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

2. View to east. Oblique view of downstream side of ...

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

2. View to east. Oblique view of downstream side of bridge and east pier. (135mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

9. View to northeast. Oblique view of upstream side of ...

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

9. View to northeast. Oblique view of upstream side of bridge from approximately deck level. (90mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

PLACING TOP CHORD CENTER PANEL. View to the northwest from ...

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

PLACING TOP CHORD CENTER PANEL. View to the northwest from the old suspension bridge. Chord members in place - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

17. View to west. Detail, connection point L2 (see plans), ...

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

17. View to west. Detail, connection point L2 (see plans), from below deck. (135mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

2. TEN MILE RIVER CULVERT WITH DODGEVILLE MILL IN BACKGROUND. ...

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

2. TEN MILE RIVER CULVERT WITH DODGEVILLE MILL IN BACKGROUND. DODGEVILLE, BRISTOL CO., MA. Sec. 4116, MP 195.55. - Northeast Railroad Corridor, Amtrak Route between RI/MA State Line & South Station, Boston, Suffolk County, MA

1. HEALDSBURG BRIDGE, OLD HIGHWAY 101, ACROSS THE RUSSIAN RIVER. ...

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

1. HEALDSBURG BRIDGE, OLD HIGHWAY 101, ACROSS THE RUSSIAN RIVER. HEALDSBURG, MEDDOCINO COUNTY, CALIFORNIA. LOOKING NW. - Redwood National & State Parks Roads, California coast from Crescent City to Trinidad, Crescent City, Del Norte County, CA

10. BRIDGE IN CONTEXT OF DAM, THIRD POWER HOUSE IN ...

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

10. BRIDGE IN CONTEXT OF DAM, THIRD POWER HOUSE IN FOREGROUND, LOOKING NORTH BY 360 DEGREES - Columbia River Bridge at Grand Coulee Dam, Spanning Columbia River at State Route 155, Coulee Dam, Okanogan County, WA

22. PIN CONNECTION AT JUNCTURE OF INTERMEDIATE VERTICAL WITH BOTTOM ...

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

22. PIN CONNECTION AT JUNCTURE OF INTERMEDIATE VERTICAL WITH BOTTOM CHORD ON PENNSYLVANIA PETIT TRUSS. HYDRAULICALLY FORGED EYES ON ROLLED STOCK. - New River Bridge, Spanning New River at State Route 623, Pembroke, Giles County, VA

50 CFR 660.79 - EFH Conservation Areas off the Coast of California.

Code of Federal Regulations, 2013 CFR

2013-10-01

... OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES OFF WEST COAST STATES....330; and §§ 660.360. (a) Eel River Canyon. The boundary of the Eel River Canyon EFH Conservation Area...

50 CFR 660.79 - EFH Conservation Areas off the Coast of California.

Code of Federal Regulations, 2012 CFR

2012-10-01

... OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES OFF WEST COAST STATES....330; and §§ 660.360. (a) Eel River Canyon. The boundary of the Eel River Canyon EFH Conservation Area...

Genomic analyses of Northern snakehead (Channa argus) populations in North America

PubMed Central

Resh, Carlee A.; Galaska, Matthew P.

2018-01-01

Background The introduction of northern snakehead (Channa argus; Anabantiformes: Channidae) and their subsequent expansion is one of many problematic biological invasions in the United States. This harmful aquatic invasive species has become established in various parts of the eastern United States, including the Potomac River basin, and has recently become established in the Mississippi River basin in Arkansas. Effective management of C. argus and prevention of its further spread depends upon knowledge of current population structure in the United States. Methods Novel methods for invasive species using whole genomic scans provide unprecedented levels of data, which are able to investigate fine scale differences between and within populations of organisms. In this study, we utilize 2b-RAD genomic sequencing to recover 1,007 single-nucleotide polymorphism (SNP) loci from genomic DNA extracted from 165 C. argus individuals: 147 individuals sampled along the East Coast of the United States and 18 individuals sampled throughout Arkansas. Results Analysis of those SNP loci help to resolve existing population structure and recover five genetically distinct populations of C. argus in the United States. Additionally, information from the SNP loci enable us to begin to calculate the long-term effective population size ranges of this harmful aquatic invasive species. We estimate long-term Ne to be 1,840,000–18,400,000 for the Upper Hudson River basin, 4,537,500–45,375,000 for the Lower Hudson River basin, 3,422,500–34,225,000 for the Potomac River basin, 2,715,000–7,150,000 for Philadelphia, and 2,580,000–25,800,000 for Arkansas populations. Discussion and Conclusions This work provides evidence for the presence of more genetic populations than previously estimated and estimates population size, showing the invasive potential of C. argus in the United States. The valuable information gained from this study will allow effective management of the existing populations to avoid expansion and possibly enable future eradication efforts. PMID:29637024

Genomic analyses of Northern snakehead (Channa argus) populations in North America.

PubMed

Resh, Carlee A; Galaska, Matthew P; Mahon, Andrew R

2018-01-01

The introduction of northern snakehead ( Channa argus ; Anabantiformes: Channidae) and their subsequent expansion is one of many problematic biological invasions in the United States. This harmful aquatic invasive species has become established in various parts of the eastern United States, including the Potomac River basin, and has recently become established in the Mississippi River basin in Arkansas. Effective management of C. argus and prevention of its further spread depends upon knowledge of current population structure in the United States. Novel methods for invasive species using whole genomic scans provide unprecedented levels of data, which are able to investigate fine scale differences between and within populations of organisms. In this study, we utilize 2b-RAD genomic sequencing to recover 1,007 single-nucleotide polymorphism (SNP) loci from genomic DNA extracted from 165 C. argus individuals: 147 individuals sampled along the East Coast of the United States and 18 individuals sampled throughout Arkansas. Analysis of those SNP loci help to resolve existing population structure and recover five genetically distinct populations of C. argus in the United States. Additionally, information from the SNP loci enable us to begin to calculate the long-term effective population size ranges of this harmful aquatic invasive species. We estimate long-term N e to be 1,840,000-18,400,000 for the Upper Hudson River basin, 4,537,500-45,375,000 for the Lower Hudson River basin, 3,422,500-34,225,000 for the Potomac River basin, 2,715,000-7,150,000 for Philadelphia, and 2,580,000-25,800,000 for Arkansas populations. This work provides evidence for the presence of more genetic populations than previously estimated and estimates population size, showing the invasive potential of C. argus in the United States. The valuable information gained from this study will allow effective management of the existing populations to avoid expansion and possibly enable future eradication efforts.

Water temperature, specific conductance, pH, and dissolved-oxygen concentrations in the lower White River and the Puyallup River estuary, Washington, August-October 2002

USGS Publications Warehouse

Ebbert, James C.

2003-01-01

The U.S. Geological Survey, Washington State Department of Ecology, and Puyallup Tribe of Indians monitored water temperature, specific conductance, pH, and dissolved-oxygen concentrations in the White River at river miles 4.9 and 1.8 from August until mid-October 2002. Water diverted from the White River upstream from the monitoring sites into Lake Tapps is returned to the river at river mile 3.6 between the two sites. The same characteristics were measured in a cross section of the Puyallup River estuary at river mile 1.5 during high and low tides in September 2002. In late August, maximum daily water temperatures in the White River of 21.1°C (degrees Celsius) at river mile 4.9 and 19.6°C at river mile 1.8 exceeded the water-quality standard of 18°C at both monitoring sites. In mid-September, maximum daily water temperatures at river mile 4.9 exceeded the standard on 5 days. From August 2-25, water temperatures at both monitoring sites were similar and little or no water was discharged from Lake Tapps to the White River. Increases in water temperature at river mile 1.8 in late September and early October were caused by the mixing of warmer water discharged from Lake Tapps with cooler water in the White River.Specific conductance in the White River usually was lower at river mile 1.8 than at river mile 4.9 because of mixing with water from Lake Tapps, which has a lower specific conductance. Maximum values of pH in the White River at river mile 4.9 often exceeded the upper limit of the water-quality standard, 8.5 pH units, from early September until mid-October, when turbidity decreased. The pH standard was not exceeded at river mile 1.8. Dissolved-oxygen concentrations in the White River were often lower at river mile 1.8 than at river mile 4.9 because of mixing with water discharged from Lake Tapps, which has lower dissolved-oxygen concentrations. The lowest concentration of dissolved oxygen observed was 7.9 mg/L (milligrams per liter) at river mile 1.8. The lower limit allowed by the water-quality standard is 8 mg/L. Concentrations of dissolved oxygen measured in a cross section of the Puyallup River estuary at high tide on September 12, 2002, ranged from 9.9 to 10.2 mg/L in fresh water at the surface and from 8.1 to 8.4 mg/L in salt water near the riverbed. These values were within limits set by Washington State water-quality standards for dissolved oxygen of 8 mg/L in fresh water and 6 mg/L in marine water.

Emerging geomorphic approaches to guide river management practices

NASA Astrophysics Data System (ADS)

Brierley, Gary; Hooke, Janet

2015-12-01

Humans have been modifying river systems across much of the world for many thousands of years. Initially, piecemeal impacts inadvertently affected particular parts of landscapes. Subsequently, many rivers have been subjected to multiple layers of human disturbance, and changes have become widespread and systematic. Increasingly, human impacts reflect deliberative actions as part of river management programmes. These activities entail significant choices in determining the desirable (or acceptable) state and behavioural regime of a river. Typically, contemporary decision-making reflects negotiations among multiple stakeholders, seeking to provide balanced approaches to the management of socio-economic, cultural, and environmental values (e.g. Jähnig et al., 2011).

A containment and disposition strategy for tritium-contaminated groundwater at the Savannah River Site, South Carolina, United States

Treesearch

Daniel R. Hitckcock; Christopher D. Barton; Karin T. Rebel; Julian Singer; John C. Seanman; J. Dan Strawbridge; Susan J. Riha; John I. Blake

2005-01-01

A containment and disposition water management strategy has been implemented at the Savannah River Site to minimize the discharge of tritiated groundwater from the Old Radioactive Waste Burial Ground to Fourmile Branch, a tributary of the Savannah River. This paper presents a general overview of the water management strategy, which includes a two-component (pond and...

Panel Discussion: Cover Crops Used at Georgia Forestry Commission Flint River and Walker Nurseries

Treesearch

Jeff Fields

2005-01-01

Flint River Nursery, located near Montezuma, Georgia, has used rye, wheat, brown top millet, and sorghum sudan grass for cover crops. Flint River has just begun to return to a summer cover crop situation. At Walker Nursery, located near Reidsville, Georgia, certified rye has been sown by the State Department of Corrections (DOC) for their harvesting, with a benefit to...

Airborne Microwave Imaging of River Velocities

NASA Technical Reports Server (NTRS)

Plant, William J.

2002-01-01

The objective of this project was to determine whether airborne microwave remote sensing systems can measure river surface currents with sufficient accuracy to make them prospective instruments with which to monitor river flow from space. The approach was to fly a coherent airborne microwave Doppler radar, developed by APL/UW, on a light airplane along several rivers in western Washington state over an extended period of time. The fundamental quantity obtained by this system to measure river currents is the mean offset of the Doppler spectrum. Since this scatter can be obtained from interferometric synthetic aperture radars (INSARs), which can be flown in space, this project provided a cost effective means for determining the suitability of spaceborne INSAR for measuring river flow.

Slaty-backed Gull in Sullivan Co., NY

USGS Publications Warehouse

Freer, V.; Haas, J.; Buckley, P.A.

2002-01-01

An adult Slaty-backed Gull (Larus schistisagus) was found and photographed at Neversink Reservoir, Sullivan Co., NY on 20 February 2002. A native of northeastern Eurasia and northern Japan, this species is rare along the Bering coast of Alaska, and there are only a handful of scattered records in the lower 48 state since the first in St Louis along the Mississippi River in late 1983. There is one previous New York State occurrence, in the Niagara River Gorge area of NY/ONT, 24 November-29 December 1992. The Sullivan Co. adult is the closest confirmed Slaty-backed Gull to the Atlantic Coast; recent single individuals along the Susquehanna River in MD, and at Cape Hatteras NC remain in dispute.

Elevation-derived watershed basins and characteristics for major rivers of the conterminous United States

USGS Publications Warehouse

Poppenga, S.K.; Worstell, B.B.

2008-01-01

The U.S. Geological Survey Earth Resources Observation and Science Center Topographic Science Project has developed elevation-derived watershed basins and characteristics for major rivers of the conterminous United States. Watershed basins are delineated upstream from the mouth of major rivers by using the hydrologic connectivity of the Elevation Derivatives for National Applications (EDNA) seamless database. Watershed characteristics are quantified by integrating ancillary geospatial datasets, including land cover, population, slope, and topography, with elevation-derived watershed boundaries. The results are published in an online EDNA Watershed Atlas at http://edna.usgs.gov/watersheds. The atlas serves as a framework for evaluating and analyzing the physical, biological, and anthropogenic status of watersheds.

Water resources data for California, water year 1979; Volume 1: Colorado River basin, Southern Great Basin from Mexican Border to Mono Lake basin, and Pacific slope basins from Tijuana River to Santa Maria River

USGS Publications Warehouse

,

1981-01-01

Water-resources data for the 1979 water year for California consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; records of water levels in selected observation wells; and selected chemical analyses of ground water. Records for a few pertinent streamflow and water-quality stations in bordering States are also included. These data, a contribution to the National Water Data System, were collected by the Geological Survey and cooperating local, State, and Federal agencies in California.

Water resources data for California, water year 1978; Volume 1: Colorado River basin, southern Great Basin from Mexican border to Mono Lake basin, and Pacific Slope basins from Tijuana River to Santa Maria River

USGS Publications Warehouse

,

1979-01-01

Water-resources data for the 1978 water year for California consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; records of water levels in selected observation wells; and selected chemical analyses of ground water. Records for a few pertinent streamflow and water-quality stations in bordering States are also included. These data, a contribution to the National water Data System, were collected by the Geological Survey and cooperating local, State, and Federal agencies in California.

Modelling of point and diffuse pollution: application of the Moneris model in the Ipojuca river basin, Pernambuco State, Brazil.

PubMed

de Lima Barros, Alessandra Maciel; do Carmo Sobral, Maria; Gunkel, Günter

2013-01-01

Emissions of pollutants and nutrients are causing several problems in aquatic ecosystems, and in general an excess of nutrients, specifically nitrogen and phosphorus, is responsible for the eutrophication process in water bodies. In most developed countries, more attention is given to diffuse pollution because problems with point pollution have already been solved. In many non-developed countries basic data for point and diffuse pollution are not available. The focus of the presented studies is to quantify nutrient emissions from point and diffuse sources in the Ipojuca river basin, Pernambuco State, Brazil, using the Moneris model (Modelling Nutrient Emissions in River Systems). This model has been developed in Germany and has already been implemented in more than 600 river basins. The model is mainly based on river flow, water quality and geographical information system data. According to the Moneris model results, untreated domestic sewage is the major source of nutrients in the Ipojuca river basin. The Moneris model has shown itself to be a useful tool that allows the identification and quantification of point and diffuse nutrient sources, thus enabling the adoption of measures to reduce them. The Moneris model, conducted for the first time in a tropical river basin with intermittent flow, can be used as a reference for implementation in other watersheds.

Reconciling Environmental and Flood Control Goals on an Arid-Zone River: Case Study of the Limitrophe Region of the Lower Colorado River in the United States and Mexico

NASA Astrophysics Data System (ADS)

Glenn, Edward P.; Hucklebridge, Kate; Hinojosa-Huerta, Osvel; Nagler, Pamela L.; Pitt, Jennifer

2008-03-01

Arid zone rivers have highly variable flow rates, and flood control projects are needed to protect adjacent property from flood damage. On the other hand, riparian corridors provide important wildlife habitat, especially for birds, and riparian vegetation is adapted to the natural variability in flows on these rivers. While environmental and flood control goals might appear to be at odds, we show that both goals can be accommodated in the Limitrophe Region (the shared border between the United States and Mexico) on the Lower Colorado River. In 1999, the International Boundary and Water Commission proposed a routine maintenance project to clear vegetation and create a pilot channel within the Limitrophe Region to improve flow capacity and delineate the border. In 2000, however, Minute 306 to the international water treaty was adopted, which calls for consideration of environmental effects of IBWC actions. We conducted vegetation and bird surveys within the Limitrophe and found that this river segment is unusually rich in native cottonwood and willow trees, marsh habitat, and resident and migratory birds compared to flow-regulated segments of river. A flood-frequency analysis showed that the existing levee system can easily contain a 100 year flood even if vegetation is not removed, and the existing braided channel system has greater carrying capacity than the proposed pilot channel.

Reconciling environmental and flood control goals on an arid-zone river: case study of the limitrophe region of the lower colorado river in the United States and Mexico.

PubMed

Glenn, Edward P; Hucklebridge, Kate; Hinojosa-Huerta, Osvel; Nagler, Pamela L; Pitt, Jennifer

2008-03-01

Arid zone rivers have highly variable flow rates, and flood control projects are needed to protect adjacent property from flood damage. On the other hand, riparian corridors provide important wildlife habitat, especially for birds, and riparian vegetation is adapted to the natural variability in flows on these rivers. While environmental and flood control goals might appear to be at odds, we show that both goals can be accommodated in the Limitrophe Region (the shared border between the United States and Mexico) on the Lower Colorado River. In 1999, the International Boundary and Water Commission proposed a routine maintenance project to clear vegetation and create a pilot channel within the Limitrophe Region to improve flow capacity and delineate the border. In 2000, however, Minute 306 to the international water treaty was adopted, which calls for consideration of environmental effects of IBWC actions. We conducted vegetation and bird surveys within the Limitrophe and found that this river segment is unusually rich in native cottonwood and willow trees, marsh habitat, and resident and migratory birds compared to flow-regulated segments of river. A flood-frequency analysis showed that the existing levee system can easily contain a 100 year flood even if vegetation is not removed, and the existing braided channel system has greater carrying capacity than the proposed pilot channel.

An appraisal of the ground-water resources of the Juniata River Basin, Pennsylvania

USGS Publications Warehouse

Seaber, Paul R.; Hollyday, Este F.

1966-01-01

This report describes the availability, quantity, quality, variability, and cost of development of the ground-water resources in the Juniata River basin, one of the larger sub-basins of the Susquehanna River basin. The report has been prepared for and under specifications established by the Corps of Engineers, U. S. Army, and the Public Health Service, Department of Health, Education, and Welfare.A comprehensive study of the water and related land resources of the Susquehanna River basin was authorized by the Congress of the United States in October 1961, and the task of preparing a report and of coordinating the work being done by others in support of the study was assigned to the Corps of Engineers. The comprehensive study is being conducted by several Federal departments and independent agencies in cooperation with the States of New York, Pennsylvania, and Maryland. The Public Health Service under its authority in the Federal Water Pollution Control Act (P. L. 660) initiated a comprehensive water quality control program for the Chesapeake drainage basin, which includes the Susquehanna River basin.

Understanding whose births get registered: a cross sectional study in Bauchi and Cross River states, Nigeria.

PubMed

Adi, Atam E; Abdu, Tukur; Khan, Amir; Rashid, Musa Haruna; Ebri, Ubi E; Cockcroft, Anne; Andersson, Neil

2015-03-13

It is a recognized child right to acquire a name and a nationality, and birth registration may be necessary to allow access to services, but the level of birth registration is low in Nigeria. A household survey about management of childhood illnesses provided an opportunity to examine actionable determinants of birth registration of children in Bauchi and Cross River states of Nigeria. Trained field teams visited households in a stratified random cluster sample of 90 enumeration areas in each state. They administered a questionnaire to women 14-49 years old which included questions about birth registration of their children 0-47 months old and about socio-economic and other factors potentially related to birth registration, including education of the parents, poverty (food sufficiency), marital status of the mother, maternal antenatal care and place of delivery of the last pregnancy. Bivariate then multivariate analysis examined associations with birth registration. Facilitators later conducted separate male and female focus group discussions in the same 90 communities in each state, discussing the reasons for the findings about levels of birth registration. Nearly half (45%) of 8602 children in Cross River State and only a fifth (19%) of 9837 in Bauchi State had birth certificates (seen or unseen). In both states, children whose mothers attended antenatal care and who delivered in a government health facility in their last pregnancy were more likely to have a birth certificate, as were children of more educated parents, from less poor households, and from urban communities. Focus group discussions revealed that many people did not know about birth certificates or where to get them, and parents were discouraged from getting birth certificates because of the unofficial payments involved. There are low levels of birth registration in Bauchi and Cross River states, particularly among disadvantaged households. As a result of this study, both states have planned interventions to increase birth registration, including closer collaboration between the National Population Commissions and state health services.

Monitoring and Evaluation of Environmental Flow Prescriptions for Five Demonstration Sites of the Sustainable Rivers Project

USGS Publications Warehouse

Konrad, Christopher P.

2010-01-01

The Nature Conservancy has been working with U.S. Army Corps of Engineers (Corps) through the Sustainable Rivers Project (SRP) to modify operations of dams to achieve ecological objectives in addition to meeting the authorized purposes of the dams. Modifications to dam operations are specified in terms of environmental flow prescriptions that quantify the magnitude, duration, frequency, and seasonal timing of releases to achieve specific ecological outcomes. Outcomes of environmental flow prescriptions implemented from 2002 to 2008 have been monitored and evaluated at demonstration sites in five rivers: Green River, Kentucky; Savannah River, Georgia/South Carolina; Bill Williams River, Arizona; Big Cypress Creek, Texas; and Middle Fork Willamette River, Oregon. Monitoring and evaluation have been accomplished through collaborative partnerships of federal and state agencies, universities, and nongovernmental organizations.

Quantification and Characterization of Chloride Sources in the Rio Grande, Southwestern United States

NASA Astrophysics Data System (ADS)

Lacey, H. F.; Phillips, F. M.; Tidwell, V.; Hogan, J.; Bastien, E.; Oelsner, G.

2005-12-01

Salinization of rivers is a problem in the southwestern United States as well as in other semiarid and arid regions of the world. Arid and semiarid rivers including the Rio Grande often exhibit increasing salinity with distance downstream, which is commonly attributed to irrigated agriculture. Increased river salinity causes economic losses by reducing crop productivity, rendering the water unsuitable for many municipal and industrial uses, and corroding or plugging pipes. Although most salinization of the Rio Grande takes place in the United States, many of the effects are felt in Mexico. Recent studies have found that salinization of the Rio Grande is geologically controlled by the addition of deep saline brines at several distinct locations. However, these additions of deep brine have not been well quantified. We have designed a model using a system dynamics software program to analyze Rio Grande chloride data. The model uses historical chloride and gaging station data and high-resolution synoptic chloride samples collected between 2000 and 2005 to characterize and quantify additions of deep brine to the river. The model has also been used to evaluate the effect of the construction of Elephant Butte Reservoir on the chloride balance of the river using chloride concentration data from 1905-1907. The model can also be used to evaluate future climatic and management scenarios in order to plan for the future water needs of the basin.

16. VIEW SOUTHWEST OF CONCRETE PIER SUPPORTING CAMELBACK AND PENNSYLVANIA ...

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

16. VIEW SOUTHWEST OF CONCRETE PIER SUPPORTING CAMELBACK AND PENNSYLVANIA PETIT TRUSSES. ORIGINAL PIER LYING IN FOREGROUND DESTROYED BY 1915 FLOOD DURING CONSTRUCTION - New River Bridge, Spanning New River at State Route 623, Pembroke, Giles County, VA

43 CFR 414.1 - Purpose.

Code of Federal Regulations, 2013 CFR

2013-10-01

... STORAGE OF COLORADO RIVER WATER AND DEVELOPMENT AND RELEASE OF INTENTIONALLY CREATED UNUSED APPORTIONMENT... Colorado River water offstream; (2) Permit State-authorized entities to develop intentionally created... years subsequent to storage; and (4) Allow only voluntary interstate water transactions. These water...

Low-Flow Water Study for the Missouri River.

DOT National Transportation Integrated Search

2008-08-01

The (MoDOT) retained TranSystems to identify and review low-flow industry : trends, equipment and strategies used in inland navigation settings throughout the United States and worldwide which : may be transferable to the Missouri River and which cou...

15. View to northeast. View along centerline from below deck; ...

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

15. View to northeast. View along centerline from below deck; detail of bent and floor beams. (65mm lens) - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA

STEEL ERECTION. View of upstream side of bridge, looking north ...

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

STEEL ERECTION. View of upstream side of bridge, looking north from the old suspension bridge at unjoined cantilever arms - South Fork Trinity River Bridge, State Highway 299 spanning South Fork Trinity River, Salyer, Trinity County, CA