Author
Geological Survey (U.S.)
4,324
Geological Survey (U.S.),
3,190
United States. Environmental Protection Agency
235
National Water-Quality Assessment Program (U.S.)
228
United States. Department of Energy
212
Southwest Florida Water Management District (Fla.)
129
United States. Bureau of Land Management
112
United States. Bureau of Reclamation
109
SpringerLink (Online service)
91
New York (State). Department of Environmental Conservation
86
California. State Water Resources Control Board
85
United States. National Park Service
85
United States. Department of Energy. Nevada Operations Office
77
South Florida Water Management District (Fla.)
75
United States. Bureau of Indian Affairs
75
Colorado. Department of Public Health and Environment. Water Quality Control Division
74
National Regional Aquifer Systems Analysis Program (U.S.)
67
Arizona. Department of Water Resources
65
Source Water Assessment and Protection Program (Colo.)
64
St. Johns River Water Management District (Fla.)
64
Arkansas Soil and Water Conservation Commission
63
ScienceDirect (Online service)
63
Nassau County (N.Y.). Department of Public Works
62
Washington (State). Department of Ecology
62
Maryland Geological Survey
61
United States. Army. Corps of Engineers
61
New Jersey. Department of Environmental Protection
57
Belitz, Kenneth
53
Wyoming. State Engineer's Office
52
California. Department of Water Resources
47
Miller, Todd S.,
46
Arkansas Geological Commission
43
New Mexico. State Engineer Office
42
Colorado. Division of Water Resources
41
United States. Environmental Protection Agency. Office of Solid Waste and Emergency Response
41
Minnesota. Department of Natural Resources
40
Robert S. Kerr Environmental Research Laboratory
40
Florida. Department of Environmental Regulation
38
Ground Water Ambient Monitoring and Assessment Program (Calif.)
38
National Risk Management Research Laboratory (U.S.)
38
Geological Survey (U.S.). Ground-water Resources Program
37
Colorado Water Resources Research Institute
36
Colorado Water Conservation Board
35
Geological Survey (U.S.). Water Resources Division
35
Chester County Water Resources Authority
33
Idaho. Department of Water Resources
32
U.S. Fish and Wildlife Service
32
Oswego County Planning Board
30
U.S. Atomic Energy Commission
30
Suffolk County Water Authority
29
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