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Author/Creator
- Geological Survey (U.S.)48
- National Water-Quality Assessment Program (U.S.)11
- United States. National Park Service4
- Barks, C. Shane2
- Connecticut. Department of Environmental Protection2
- Missouri. Division of Environmental Quality2
- Neitzert, Kathleen M.2
- Richards, Joseph M.2
- Robinson, Keith W.2
- South Dakota. Department of Environment and Natural Resources2
- United States. Bureau of Land Management2
- United States. Bureau of Reclamation2
- Vecchia, Aldo V.2
- Anderholm, Scott K.1
- Anderson, Anita L. (Anita Louise)1
- Arkansas Soil and Water Conservation Commission1
- Baehr, Arthur L.1
- Bails, Jeffrey B.1
- Bartos, Timothy T.1
- Bauch, Nancy J.1