Region
New York (State)
18
Florida
13
New Mexico
10
California
9
Nevada
9
Minnesota
8
Tennessee
7
Texas
7
Utah
7
Arizona
6
Louisiana
6
North Carolina
6
Pennsylvania
6
Alabama
5
Colorado
5
Washington (State)
5
Floridan Aquifer
4
Long Island
4
Montana
4
New Jersey
4
Nye County
4
Virginia
4
Cattaraugus County
3
El Paso County
3
Illinois
3
Micronesia
3
Micronesia (Federated States)
3
Nassau County
3
Nebraska
3
New Hampshire
3
Ohio
3
Oregon
3
United States
3
Albuquerque
2
American Samoa
2
Catron County
2
Chenango County
2
Chester County
2
Colorado River Watershed (Colo.-Mexico)
2
Edwards Aquifer
2
Edwards Aquifer (Tex.)
2
Gloucester County
2
Hawaii
2
Idaho
2
Imperial Valley (Calif. and Mexico)
2
Magothy Aquifer
2
Marine Corps Air Station Cherry Point
2
Michigan
2
Missouri
2
North Dakota
2
more ...