Subject
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Land use
13
Monitoring wells
13
Groundwater flow Simulation methods
12
California
11
Edwards Aquifer (Tex.)
11
Groundwater Mathematical models
11
Groundwater flow Computer simulation
11
Land use Environmental aspects
11
Potentiometry
11
Runoff
11
Water Storage
11
Water balance (Hydrology)
11
Arizona
10
Drinking water
10
Electric prospecting
10
Formations (Geology)
10
Hydraulics
10
Karst
10
Patapsco Aquifer
10
Water Nitrogen content
10
Alluvium
9
Geophysics
9
Nevada
9
Volcanic ash, tuff, etc
9
Aquifer storage recovery
8
Boring
8
Carbonate rocks
8
Coal mines and mining
8
Drift
8
Irrigation water
8
Micronesia
8
New Mexico
8
Water conservation
8
Water withdrawals Environmental aspects
8
Climatic changes
7
Coastal plains
7
Groundwater Management
7
Hydraulic measurements
7
Pesticides Environmental aspects
7
Utah
7
Wyoming
7
Albuquerque Basin (N.M.)
6
Canals
6
Frozen ground
6
Geology, Structural
6
Groundwater ecology
6
Madison Aquifer
6
Precipitation (Meteorology)
6
Radioactive pollution of water
6
Radioactive waste disposal
6
more ...