Subject
Geology
77
Water quality
77
Aquifers
47
Groundwater
47
Groundwater Pollution
43
Geology, Stratigraphic
32
Groundwater flow
32
New Jersey
31
Hydrogeology
30
Water-supply
29
Hydrology
26
Groundwater Quality
25
Water Pollution
24
National parks and reserves
23
Water table
23
Waste minimization Research
22
Magnetite
19
Post office buildings
18
Sandy Hook Unit of Gateway National Recreation Area (N.J.)
17
Streamflow
17
Gateway National Recreation Area (N.J. and N.Y.)
16
Stream measurements
15
Wildlife refuges
15
Hurricane Sandy, 2012
14
Geomagnetism
13
New Jersey History
13
Hazardous waste sites
12
Paleontology
12
Floods
11
Groundwater flow Mathematical models
11
Mines and mineral resources
11
Nitrates Environmental aspects
11
Auditing
10
Saltwater encroachment
10
Water withdrawals
10
Wild and scenic rivers Law and legislation
10
Historic sites Law and legislation
9
Trails Law and legislation
9
Great Falls of the Passaic Society for Universal Manufacturing Historic District (Paterson, N.J.)
8
Historic sites Conservation and restoration
8
History
8
Kirkwood-Cohansey Aquifer (N.J.)
8
Pesticides Environmental aspects
8
Water quality management
8
Delaware Water Gap National Recreation Area (N.J. and Pa.)
7
Fort Hancock (N.J.)
7
Grants-in-aid
7
Grants-in-aid Auditing
7
Groundwater flow Computer simulation
7
Historic buildings Conservation and restoration
7
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