Region
Montana
12
Colorado
8
California
7
Kansas
7
United States
6
Utah
5
Idaho
4
Missouri
4
New Jersey
4
Oklahoma
4
Pennsylvania
4
Wyoming
4
Florida
3
Illinois
3
New York (State)
3
Wisconsin
3
Deer Lodge Valley
2
Erie, Lake, Watershed
2
Great Lakes (North America)
2
Michigan
2
Nebraska
2
Nevada
2
New Mexico
2
Northeastern States
2
Saint Clair, Lake (Mich. and Ont.)
2
Tennessee
2
Washington (State)
2
Alabama
1
Albuquerque
1
Arizona
1
Arkansas
1
Arnold Air Force Base
1
Atlantic Coast (U.S.)
1
Big Lost River Valley
1
Bitterroot River Valley
1
Blaine County
1
Blockhouse Creek
1
Canadian River Watershed (Okla.)
1
Carson River Watershed
1
Cattaraugus County
1
Center Creek watershed
1
Chester County
1
Clear Fork Watershed (Tenn. and Ky.)
1
Coconino County
1
Coffee County
1
Colorado River Watershed (Colo.-Mexico)
1
Columbia River Watershed
1
Connetquot Brook Watershed
1
Deep Fork River Watershed (Okla.)
1
Delaware River (N.Y.-Del. and N.J.)
1
more ...