Region
Colorado
33
Montrose County
15
Utah
11
Colorado Plateau
6
Arizona
3
San Juan County
3
West (U.S.)
3
Grand County
2
Navajo County
2
San Miguel County
2
Wyoming
2
Bitter Creek
1
Emery County
1
Mesa County
1
Monument Valley (Ariz. and Utah)
1
Monument Valley Region (Ariz. and Utah)
1
North Dakota
1
Rocky Mountains Region
1
San Juan Mountains (Colo. and N.M.)
1
Slick Rock District
1
South Dakota
1