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Author/Creator
- Geological Survey (U.S.)232
- United States. Bureau of Reclamation18
- U.S. Fish and Wildlife Service15
- National Water-Quality Assessment Program (U.S.)13
- United States. Department of Energy11
- New Jersey. Department of Environmental Protection9
- United States. Bureau of Indian Affairs8
- United States. Environmental Protection Agency6
- Arizona. Department of Water Resources4
- Bales, Jerad4
- Goldstein, Robert M.4
- Hunchak-Kariouk, Kathryn4
- Lindsey, Bruce D., 1962-4
- Mojave Water Agency (Calif.)4
- United States. National Park Service4
- Arkansas Soil and Water Conservation Commission3
- Embrey, S. S.3
- Littin, G. R.3
- Southwest Florida Water Management District (Fla.)3
- Szabo, Zoltan, 1959-3