E:
Earth’s Water Cycle in a Changing Climate - Webcast of a presentation at the Library of Congress by Peter Hildebrand, chief of the Hydrospheric and Biospheric Sciences Laboratory at NASA Goddard Space Flight Center. [U.S. Library of Congress (LOC), Science, Technology and Business Division]

F:
FS INFO - National Forest Service Library catalog--indexing forestry and natural resources literature, including many full-text links. [U.S. Department of Agriculture (USDA), Forest Service]

Fish On - Line - Idaho fish community map data collected as part of discrete or on-going water quality assessments in Idaho rivers and streams. [U.S. Department of the Interior (DOI), U.S. Geological Survey (USGS), Forest & Rangeland Ecosystems Science Center-Snake River Field Station]

N:
National Streamflow Information Program - Home page describing the operation and maintenance of 7000 streamgages, overview of the program, system for collection of streamflow data, maintaining of historic streamflow data, and available reports [U.S. Department of the Interior (DOI), U.S. Geological Survey (USGS)]

Nonindigenous Aquatic Species Database - A central repository for spatially referenced biogeographic accounts of introduced aquatic species. [U.S. Department of the Interior (DOI), U.S. Geological Survey (USGS), Southeast Ecological Science Center]

O:
Observing the Living Oceans from Space. Webcast - A Webcast of a presentation by Gene Feldman, NASA Goddard Space Flight Center. [U.S. Library of Congress (LOC)]

S:
Southeast Watershed Research Laboratory - Develops scientific understanding and technologies of watershed systems essential to maintaining or enhancing the environmental and natural resource base required for the agricultural economy [U.S. Department of Agriculture (USDA), Agriculture Research Service (ARS)]