Author
Geological Survey (U.S.)
1,605
Geological Survey (U.S.),
1,183
United States. Department of Energy
78
United States. Bureau of Land Management
69
United States. Environmental Protection Agency
57
United States. Bureau of Reclamation
54
United States. Bureau of Indian Affairs
51
United States. National Park Service
39
Southwest Florida Water Management District (Fla.)
34
Washington (State). Department of Ecology
34
California. Department of Water Resources
33
SpringerLink (Online service)
33
National Water-Quality Assessment Program (U.S.)
31
United States. Army. Corps of Engineers
30
Wyoming. State Engineer's Office
29
U.S. Atomic Energy Commission
27
Nassau County (N.Y.). Department of Public Works
26
Arizona. Department of Water Resources
25
Arkansas Soil and Water Conservation Commission
25
Colorado. Division of Water Resources
25
New York (State). Department of Environmental Conservation
25
California. State Water Resources Control Board
24
United States. Department of Energy. Nevada Operations Office
24
Geological Survey (U.S.). Water Resources Division
22
New Mexico. State Engineer Office
22
Minnesota. Department of Natural Resources
21
National Regional Aquifer Systems Analysis Program (U.S.)
21
Colorado Water Conservation Board
20
South Florida Water Management District (Fla.)
20
Prakken, Lawrence B.,
19
Arkansas Geological Commission
17
Belitz, Kenneth
17
New Jersey. Department of Environmental Protection
17
Shade, Patricia J.
17
Louisiana. Department of Transportation and Development,
16
Montana Bureau of Mines and Geology
16
ScienceDirect (Online service)
16
Louisiana. Department of Transportation and Development
15
Swenson, Herbert A. 1911-
15
Colorado Geological Survey
14
New Jersey. Division of Water Resources
14
North Dakota State Water Commission
14
Takasaki, K. J.
14
Ground Water Ambient Monitoring and Assessment Program (Calif.)
13
Oregon. Water Resources Department
13
Chester County Water Resources Authority
12
Daniel, Charles C., III 1943-
12
Martin, Peter, 1953-
12
North Dakota Geological Survey
12
U.S. Fish and Wildlife Service
12
more ...