Region
California
11
Florida
9
Calaveras County
6
Minnesota
6
Floridan Aquifer
5
New York (State)
5
Ohio
5
Indiana
4
Nebraska
4
Texas
4
Washington (State)
4
Wisconsin
4
Cortland County
3
Franklin County
3
Manatee County
3
Missouri
3
Saint Johns River
3
Dillon Region
2
Grand Calumet River (Ind. and Ill.)
2
Grand Calumet River Watershed (Ind. and Ill.)
2
Green Cove Springs
2
Gulf Region
2
Idaho
2
Illinois
2
Indian Wells Valley
2
Indiana Harbor Canal
2
Iowa
2
Keewatin Region
2
Maine
2
Marion County
2
Mississippi River
2
Montana
2
New Jersey
2
North Platte Natural Resources District
2
Riverside County
2
Sarasota County
2
Scioto River
2
South Dakota
2
Tennessee
2
Union County
2
Utah
2
Utah Lake Watershed
2
Vilas County
2
Virginia
2
Wyoming
2
Androscoggin River Watershed (N.H. and Me.)
1
Arkansas
1
Assateague Island National Seashore Region (Md. and Va.)
1
Atlantic Coast
1
Blackstone River (Mass. and R.I.)
1
more ...