Region
Florida
18
New Mexico
15
Arizona
11
California
10
Colorado
9
Floridan Aquifer
9
Nevada
9
New York (State)
9
Utah
9
Texas
8
Washington (State)
6
Espanola Valley
5
Georgia
5
Nebraska
4
Tennessee
4
Virginia
4
Atlantic Coast
3
Hawaii
3
Idaho
3
Illinois
3
Indiana
3
Maryland
3
Massachusetts
3
Michigan
3
New Jersey
3
Pennsylvania
3
San Juan County
3
Brazos River Valley
2
Connecticut
2
Death Valley Region (Calif. and Nev.)
2
Española Basin
2
Grand County
2
High Plains Aquifer
2
Kentucky
2
Maui
2
Miami-Dade County
2
Minnesota
2
Missouri
2
North Carolina
2
San Antonio
2
San Pedro River Watershed (Mexico and Ariz.)
2
United States
2
Wyoming
2
Yakima River Watershed
2
Yavapai County
2
Adams County
1
Agua Fria National Monument
1
Agua Fria National Monument (Ariz.)
1
Alabama
1
Alameda County
1
more ...