| Delaware River Basin Commission: Data on basin flows and reservoir elevations, technical reports, educational page and other information on the watershed. |
| 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. |
| European Topic Centre on Water: Consortium of water quality agencies which monitor and exchange information on the health of European waters. |
| Oklahoma Water Quality Division: Oklahoma's state department of environment, water quality section. |
| 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. |
| 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. |
| Southwest Florida Water Management District: SWFWMD is a state/local governmental regulatory agency which issues water use permits, among other responsibilities |
| 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. |
| Susquehanna River Basin Commission: Site provides listings of Commission activities and projects, technical reports and summaries of hydrologic conditions in the basin. |
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