Subject
Groundwater
Aquifers
21
Water quality
8
Water-supply
7
Hydrogeology
4
Nitrogen
3
Water Nitrogen content
3
Geology
2
Groundwater flow
2
Land use
2
New York (State) Geology
2
Water table
2
Floods
1
Groundwater Pollution
1
Industrial water supply
1
Karst
1
Long Island City (New York, N.Y.)
1
Monitoring wells
1
Staten Island (New York, N.Y.)
1
Water balance (Hydrology)
1