Region
New Mexico
13
Montana
12
California
11
Arizona
10
Colorado
9
Oregon
9
Utah
9
Wyoming
9
California Desert National Conservation Area (Calif.)
7
Nevada
6
United States
6
Idaho
4
Alaska
3
Coconino County (Ariz.)
2
Custer County
2
Custer County (Mont.)
2
Nebraska
2
North Dakota
2
Virginia
2
Alabama
1
Benton County
1
Caliente
1
Caliente (Nev.)
1
Chouteau County (Mont.)
1
Coconino County
1
Duchesne County
1
Duchesne County (Utah)
1
Elko County (Nev.)
1
Ely
1
Ely (Nev.)
1
Georgia
1
Grand County (Utah)
1
Kansas
1
Kern County
1
Kern County (Calif.)
1
Liberty County (Mont.)
1
Linn County
1
Luke (Nev.)
1
Marion County
1
Maryland
1
Massachusetts
1
Mesa County (Colo.)
1
Navajo County
1
Navajo County (Ariz.)
1
New York (State)
1
North Carolina
1
Ontario
1
Polk County
1
Pondera County (Mont.)
1
Powder River County
1
more ...