Author
Geological Survey (U.S.)
690
Geological Survey (U.S.),
463
SpringerLink (Online service)
66
United States. Bureau of Land Management
47
Water Resources Council (U.S.)
43
Films for the Humanities & Sciences (Firm)
41
Infobase
41
United States. Department of Energy
32
United States. Environmental Protection Agency
23
Southwest Florida Water Management District (Fla.)
21
ScienceDirect (Online service)
20
United States. National Park Service
18
United States. Army. Corps of Engineers
15
Geological Survey (U.S.). Water Resources Division
14
Massachusetts. Division of Water Pollution Control
14
U.S. Fish and Wildlife Service
14
United States. Bureau of Indian Affairs
12
Florida. Department of Environmental Regulation
11
United States. Forest Service
10
Wisconsin. Department of Natural Resources
10
New Jersey. Department of Environmental Protection
9
Shade, Patricia J.
9
South Florida Water Management District (Fla.)
9
Indiana. Department of Natural Resources
8
New Mexico. State Engineer Office
8
United States. Bonneville Power Administration
8
Wandle, S. William
8
Colorado Water Conservation Board
7
Farrar, C. D.
7
Oklahoma Geological Survey
7
United States. Bureau of Reclamation
7
Driscoll, Daniel G.
6
Hall, Dennis C.
6
Looking Glass Pictures
6
Singh, V. P.
6
Texas. Department of Water Resources
6
Thomsen, B. W., 1926-
6
United States. Natural Resources Conservation Service
6
Utah. Division of Water Rights
6
Washington (State). Department of Ecology
6
A&E Television Networks, LLC
5
Bailey, E. G. 1880-1974,
5
California. Department of Water Resources
5
Chow, Ven Te, 1919-1981,
5
Colorado Geological Survey
5
Colorado. Department of Natural Resources
5
Colorado. Office of the State Engineer
5
Field, Stephen J. 1935-
5
Gatewood, J. S.
5
Granada Media (Firm)
5
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