Region
California
12
Colorado
9
Clark Fork Watershed (Mont. and Idaho)
8
Idaho
6
New Jersey
6
United States
6
Montana
5
Oregon
5
Washington (State)
5
Illinois River Watershed
4
Yakima River Watershed
4
Coeur d'Alene Lake (Idaho)
3
Colorado River Watershed (Colo.-Mexico)
3
Texas
3
Wyoming
3
Alaska
2
Animas River Watershed (Colo. and N.M.)
2
Chukchi Sea
2
Coeur d'Alene River Watershed
2
Jordan River
2
Michigan, Lake, Watershed
2
Minnesota
2
Nebraska
2
Nevada
2
North Dakota
2
Potomac River Watershed
2
San Francisco Bay Area
2
San Joaquin River Watershed
2
San Joaquin Valley
2
Shasta County
2
South Carolina
2
South Dakota
2
Steamboat Creek Watershed (Douglas County and Lane County)
2
Utah
2
Willamette River
2
Alabama
1
Albuquerque Region
1
Arizona
1
Arkansas River
1
Atlantic Coastal Watershed
1
Beaufort Sea
1
Blackfoot River
1
Blackstone River (Mass. and R.I.)
1
Blackstone River Watershed (Mass. and R.I.)
1
Boulder Reservoir
1
Cattaraugus Indian Reservation
1
Cedar Creek Reservoir
1
Clark Fork (Mont. and Idaho)
1
Coeur d'Alene Lake Region
1
Columbia River
1
more ...