Region
Alaska
197
United States
164
Nevada
112
Colorado
108
California
103
New Mexico
75
Utah
70
Arizona
46
Idaho
44
Montana
41
Kansas
37
Missouri
34
Oregon
30
Wyoming
27
South Carolina
26
Georgia
21
West (U.S.)
18
Saudi Arabia
16
Texas
16
Florida
15
Brooks Range
14
Colorado Plateau
14
Wisconsin
14
Humboldt County
13
North Carolina
13
San Juan County
13
Illinois
12
Washington (State)
12
Arkansas
11
Hawaii
11
Lincoln County
11
Montrose County
11
New York (State)
11
Mexico, Gulf of
10
San Bernardino County
10
Virginia
10
Canada
9
Denver Basin
9
Nye County
9
Oklahoma
9
San Miguel County
9
Grand County
8
Kentucky
8
Louisiana
8
Pennsylvania
8
Vermont
8
Clear Creek County
7
Elko County
7
Garfield County
7
Minnesota
7
more ...