Region
South Dakota
3
Colorado
2
American Falls
1
Bowdoin National Wildlife Refuge (Mont.)
1
California
1
Churchill County
1
Columbia River
1
Idaho
1
Milk River (Mont. and Alta.)
1
Milk River Watershed (Mont. and Alta.)
1
Montana
1
Nevada
1
New Mexico
1
Rio Grande Valley (Colo.-Mexico and Tex.)
1
Salton Sea
1
Salton Sea Region
1
Salton Sea Region (Calif.)
1
Sun River Region
1
Uintah and Ouray Indian Reservation
1
Uncompahgre River Region
1
Utah
1
Washington (State)
1