Region
United States
223
West (U.S.)
41
Oregon
40
Utah
40
Wyoming
38
Arizona
29
California
29
Nevada
23
New Mexico
22
Alaska
21
Colorado
21
Idaho
18
Montana
17
Oregon, Western
14
North Dakota
9
Arctic National Wildlife Refuge (Alaska)
7
Clark County
6
South Dakota
6
Cibola National Forest
5
Cibola National Forest (N.M.)
5
Columbia River Watershed
5
Great Basin
5
Northwest, Pacific
5
Arctic National Wildlife Refuge
4
Billings County
4
Billings County (N.D.)
4
Douglas County
4
Florida
4
Mississippi
4
Owyhee County
4
Agua Fria National Monument (Ariz.)
3
Alabama
3
Billings
3
California, Northern
3
Campbell County
3
Catron County
3
Grand Staircase-Escalante National Monument
3
Kansas
3
Lane County
3
Mohave County
3
National Petroleum Reserve
3
Pompeys Pillar National Monument (Mont.)
3
San Luis Valley (Colo. and N.M.)
3
Socorro County
3
Sonoran Desert National Monument
3
Uintah County
3
Washington (State)
3
Wisconsin
3
Yavapai County
3
Alaska, Southeast
2
more ...