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- Geological Survey (U.S.)✖[remove]2,240
- National Water-Quality Assessment Program (U.S.)59
- United States. Bureau of the Census56
- United States. Bureau of Mines44
- United States. National Oceanic and Atmospheric Administration20
- Hamilton, Pixie A.17
- United States. Environmental Protection Agency17
- National Science Foundation (U.S.)15
- U.S. Fish and Wildlife Service15
- United States. Bureau of Land Management15
- United States. Bureau of Mines. Branch of Data Collection and Coordination15
- Gannett, Henry, 1846-191414
- United States. Federal Emergency Management Agency14
- United States. Forest Service13
- Schmoker, J. W.12
- Peddie, Norman W.11
- Schroder, L. J.11
- Attanasi, E. D.10
- Mueller, David K.10
- Alexander, Richard B.9