Region
United States
7
Colorado
6
California
5
Montana
5
Nevada
5
South Dakota
4
West (U.S.)
4
Utah
3
Wyoming
3
Churchill County
2
Green River Valley (Wyo.-Utah)
2
Idaho
2
Imperial Valley (Calif. and Mexico)
2
Oregon
2
Rio Grande Valley (Colo.-Mexico and Tex.)
2
Washington (State)
2
Altus, Lake, Watershed (Okla. and Tex.)
1
American Falls
1
Arizona
1
Benton Lake National Wildlife Refuge (Mont.)
1
Bowdoin National Wildlife Refuge (Mont.)
1
Brown County
1
Columbia Plateau
1
Columbia River
1
Dolores Region
1
Fallon Region
1
Florida
1
Freezout Lake Wildlife Management Area
1
Freezout Lake Wildlife Management Area (Mont.)
1
Georgia
1
Grand Valley
1
Grand Valley (Colo. and Utah)
1
Great Plains
1
High Plains (U.S.)
1
Kansas
1
Laguna Atascosa National Wildlife Refuge
1
Malheur County
1
Milk River (Mont. and Alta.)
1
Milk River Watershed (Mont. and Alta.)
1
Minnesota
1
Mississippi
1
Natrona County
1
Nebraska
1
New Mexico
1
Owyhee County
1
Palo Verde Valley
1
Palo Verde Valley (Calif.)
1
Parker Valley
1
Parker Valley (Ariz. and Calif.)
1
Prickly Pear Creek Valley
1
more ...