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Author/Creator
- Geological Survey (U.S.)29
- Chester County Water Resources Authority7
- Garges, John A.3
- McManus, B. Craig3
- Albuquerque (N.M.)2
- Anderholm, Scott K.2
- Arkansas Geological Commission2
- Bexfield, Laura M.2
- Louisiana. Department of Transportation and Development. Water Resources Section2
- American Samoa Environmental Protection Agency1
- Antelope Valley Water Group1
- Arkansas Soil and Water Conservation Commission1
- Barlow, Paul M.1
- Brantly, Jeffrey A.1
- Burt, David E., 1960-1
- Carlson, Carl S.1
- Crist, Marvin A., 1930-1
- Dague, Barbara J.1
- Delaware Geological Survey1
- Dickerman, David C.1