European Topic Centre on Water
- Consortium of water quality agencies which monitor and exchange information on the health of European waters.
- http://water.eionet.europa.eu/

St. Johs River Water Management District
- The St. Johns River Water Management District is responsible for managing ground and surface water supplies in all or part of 19 counties in northeast and east-central Florida.
- http://sjr.state.fl.us/

Region III, Water Protection Division
- Information on environmental and water quality programs administered by Region III (Mid-Atlantic region) of the U.S. Environmental Protection Agency.
- http://www.epa.gov/reg3wapd/

South Florida Water Management District
- Regional agency responsible for planning and regulation of consumptive uses of water, regulation of wetlands and other water related activities including restoration of the Everglades.
- http://www.sfwmd.gov/

Susquehanna River Basin Commission
- Site provides listings of Commission activities and projects, technical reports and summaries of hydrologic conditions in the basin.
- http://www.srbc.net/

Delaware River Basin Commission
- Data on basin flows and reservoir elevations, technical reports, educational page and other information on the watershed.
- http://www.state.nj.us/drbc/drbc.htm

Oklahoma Water Quality Division
- Oklahoma's state department of environment, water quality section.
- http://www.deq.state.ok.us/WQDnew/index.htm

Southwest Florida Water Management District
- SWFWMD is a state/local governmental regulatory agency which issues water use permits, among other responsibilities
- http://www.swfwmd.state.fl.us/

EPA's Office of Water
- Directory and searching of U.S. EPA water-related web resources, imagery, animations, kid's pages, publications, and links about U.S. water resources.
- http://www.epa.gov/OW/