Region
California
8
Florida
8
North Carolina
5
Washington (State)
5
Colorado
4
Oklahoma
4
Puerto Rico
4
United States
4
Colorado River Watershed (Colo.-Mexico)
3
Georgia
3
High Plains Aquifer
3
Kansas
3
Minnesota
3
New Hampshire
3
Virginia
3
Alabama
2
Arizona
2
Connecticut
2
Floridan Aquifer
2
Hawaii
2
Indiana
2
Maryland
2
Michigan
2
Mississippi River Watershed
2
Montana
2
Nebraska
2
New Mexico
2
Ohio
2
Orange County
2
Tennessee
2
Wisconsin
2
Aberdeen Proving Ground
1
Albany
1
Albert Lea Region
1
Animas River Watershed (Colo. and N.M.)
1
Arapahoe County
1
Bad River Reservation
1
Barstow Region
1
Bernalillo County
1
Beverly Shores Region
1
Boulder County
1
Brunswick County
1
Caddo County
1
Caguas
1
California, Southern
1
Calumet Region (Ill. and Ind.)
1
Canal Creek
1
Carolina
1
Chippewa County
1
Colorado River Region (Colo.-Mexico)
1
more ...