• U.S. Dept. of Agriculture
• Economic Research Service
• Agricultural Research Service
Hydrology Lab Provides access to the ARS Water Database
• Natural Resources Conservation Service
• Pasture Systems and Watershed Management Research Laboratory (link inactive 10/25/06)


• Army Corps of Engineers (U.S.)
• Hydrologic Engineering Center (HEC)
• Library
• National Inventory of Dams (NID)
• Waterways Experiment Station


• Bureau of Reclamation (USBR)
• Bureau of Reclamation History Program
• Central Valley Project Improvement Act
• Lower Colorado Region - Managing the lower Colorado River and water resource projects and programs in Arizona, southern California, and southern Nevada.
• Mid-Pacific Region Regional information for California, Nevada, and Oregon


• Cooperative State Research, Education, and Extension Service (CSREES) - National Water Quality Program
• Pacific Northwest Regional Water Program
• Southwest States and Pacific Islands Regional Water Program


• Environmental Protection Agency (U.S. EPA)
• Acid Rain Program
• CADDIS - ... otherwise known as the Causal Analysis/Diagnosis Decision Information System, is an online application that uses a step-by-step guide, worksheets and examples to help scientists and engineers find, access, organize, share and use environmental information to evaluate causes of biological effects observed in aquatic systems such as streams, lakes and estuaries.
• Chesapeake Bay Program
• EPA's Envirofacts - A single point of access to select U.S. EPA environmental data. This website provides access to several EPA databases to provide you with information about environmental activities that may affect air, water, and land anywhere in the United States. With Envirofacts, you can learn more about these environmental activities in your area or you can generate maps of environmental information.
• Permit Compliance System (PCS) provides information on companies which have been issued permits to discharge waste water into rivers. You can review information on when a permit was issued and expires, how much the company is permitted to discharge, and the actual monitoring data showing what the company has discharged.
• ECOTOX - A database that provides single chemical toxicity information for aquatic and terrestrial life.
• Interprative Documents Collection - This Web site has been developed to provide a central point of access to non-binding general policy, guidance, and interpretive documents that describe how the Agency intends to exercise its discretionary authority and explains what a statute or regulation means.
• Drinking Water Research Information Network (DRINK) is a portal to information on projects funded or performed by water research organizations, government agencies in the U.S., international research organizations, and academic institutions focused on drinking water issues. It is a compilation of drinking water project information from partner organizations that creates a single source of information on ongoing research.
• Large-Scale Ecosystem Protection Efforts
Model Ordinances to Protect Local Resources
• National Center for Environmental Innovation
• National Pollutant Discharge Elimination System
• National Risk Management Research Laboratory
• Surf Your Watershed - a service to help one locate, use, and share environmental information about states and watersheds.
• Office of Ground Water and Drinking Water
• Office of Water
• STORET - STORET (short for STOrage and RETrieval) is a repository for water quality, biological, and physical data and is used by state environmental agencies, EPA and other federal agencies, universities, private citizens, and many others.
• Water Science "...applying science & technology to protect water quality." The Office of Science and Technology (OST) is responsible for developing sound, scientifically defensible standards, criteria, advisories, guidelines, limitations and standards guidelines under the Clean Water Act and the Safe Drinking Water Act. OST is also responsible for developing risk assessment methodologies and for providing risk assessment support for the Office of Water in the U.S. Environmental Protection Agency.
• Watershed Assessment, Tracking & Environmental Results
• EnviroMapper - EnviroMapper for Water is a web-based Geographic Information System (GIS) application that dynamically displays information about bodies of water in the United States.
• Watershed Information Network (WIN)


• Geological Survey (USGS)
• Water Resources Information Home Page Provides links to Regional and Local Office home pages, including the California District and the San Francisco Ecosystem Program
• USGS Water Resources of the United States Provides access to real-time data, site information, and data on surface water, groundwater, and water quality for all 50 states, the District of Columbia, and Puerto Rico
• Publications and Other Products -
• Publications Warehouse - "The reports and thematic maps database currently contains more than 67,000 bibliographic citations, including numbered series begun as early as 1882. Citations and online documents are added regularly. Availability of content ranges from full text to bibliographic citation only." -- Nov. 8, 2005.
• Online USGS Water Resources Reports


• Water Resources Data by State : Calif. - No longer published in print; California data 2001 and prior are available in hard copy at WRCA, call no. R G200 USG-2.
• National Streamflow Information Program (NSIP) A conceptual plan developed by USGS for a new approach to the acquisition and delivery of streamflow information.
• National Water Conditions Provides an overview of surface water and groundwater conditions in the U.S., southern Canada, and Puerto Rico
• National Wetlands Research Center - The National Wetlands Research Center is a source and clearinghouse of science information about wetlands in the United States and the world for fellow agencies, private entities, academia, and the public at large.
• Toxic Substances Hydrology Program provides objective scientific information to improve characterization and management of contaminated sites, to protect human and environmental health, and to reduce potential future contamination problems.
• Water Watch provides current water resources conditions across the U.S. (includes Google Earth KML files)

Note: For access to USGS Streamflow Data and Selected Water Resources Abstracts, please see http://www.lib.berkeley.edu/WRCA/database.html;
For a Guide to Locating Streamflow Records, please see http://www.lib.berkeley.edu/WRCA/streamflow.html


• International Association for Great Lakes Research


• Lawrence Berkeley Laboratory (LBL) Search the LBL Web Server for water-related research being conducted at LBL
• Water and Energy Technology Team


• National Park Service
  • Environmental Contaminants Encyclopedia
  • National Parks Service - Water Resources


• National Technical Information Service
• FedWorld - The FedWorld.gov web site is a gateway to government information. This site is managed by the National Technical Information Service (NTIS) as part of it's information management mandate.


• see National Oceanic and Atmospheric Administration (NOAA) on our Coastal, Estuarine & Ocean Resources page


• Oak Ridge National Laboratory (ORNL) U.S. Dept. of Energy. Search the ORNL Web Server for water-related research being conducted at ORNL
• Clinch River Environmental Restoration Program