Region
Louisiana
26
Florida
17
California
16
New York (State)
13
South Dakota
10
United States
10
Wyoming
9
Minnesota
8
New Mexico
8
Puerto Rico
8
Arizona
7
Tennessee
6
Washington (State)
6
Colorado
5
Kentucky
5
Massachusetts
5
Nebraska
5
Pennsylvania
5
Texas
5
Arkansas
4
Montana
4
New Jersey
4
Ohio
4
Southern States
4
Columbia Plateau
3
Georgia
3
High Plains Aquifer
3
Idaho
3
Kansas
3
Middle Atlantic States
3
Nassau County
3
Nevada
3
North Dakota
3
Oregon
3
San Bernardino County
3
Alaska
2
Bethpage
2
Colorado River Watershed (Colo.-Mexico)
2
Floridan Aquifer
2
Guam
2
Imperial Valley (Calif. and Mexico)
2
Indiana
2
Long Island
2
Lyon County
2
Michigan
2
Micronesia (Federated States)
2
Minneapolis Metropolitan Area
2
Missouri
2
New York
2
North Carolina
2
more ...