Region
Colorado
35
California
18
Arkansas
17
United States
14
Montana
11
Nevada
11
West (U.S.)
8
Wyoming
8
South Dakota
6
Grand Valley (Colo. and Utah)
5
New Mexico
5
Utah
5
Washington (State)
5
Churchill County
4
Idaho
4
Arizona
3
Central Valley (Valley)
3
Florida
3
High Plains (U.S.)
3
Imperial Valley (Calif. and Mexico)
3
Natrona County
3
Oregon
3
Rio Grande Valley (Colo.-Mexico and Tex.)
3
Salton Sea
3
Salton Sea (Calif.)
3
Uncompahgre River Region
3
American Falls
2
Benton Lake National Wildlife Refuge (Mont.)
2
Bowdoin National Wildlife Refuge (Mont.)
2
Colorado River Watershed (Colo.-Mexico)
2
Columbia Plateau
2
Columbia River
2
Freezout Lake Wildlife Management Area
2
Freezout Lake Wildlife Management Area (Mont.)
2
Georgia
2
Grand Valley
2
Green River Valley (Wyo.-Utah)
2
Kansas
2
Laguna Atascosa National Wildlife Refuge
2
Malheur County
2
Milk River Watershed (Mont. and Alta.)
2
Minnesota
2
Owyhee County
2
Palo Verde Valley
2
Palo Verde Valley (Calif.)
2
Parker Valley (Ariz. and Calif.)
2
Poinsett County
2
Prickly Pear Creek Valley
2
San Juan County
2
San Juan River (Colo.-Utah)
2
more ...