Region
Colorado
Garfield County
4
Utah
4
Mesa County
3
Western Slope
3
Denver
2
Hinsdale County
2
Kansas
2
Western Slope (Colo.)
2
Arizona
1
Aspen Region
1
Cheyenne County
1
Clear Creek County
1
Custer County (Colo.)
1
Denver (Colo.)
1
Dolores County
1
Forest County
1
Fremont County
1
Fruitland Formation (Colo. and N.M.)
1
Green River Formation
1
Gypsum Region
1
Huerfano County
1
Idaho Springs
1
Jefferson County
1
Kit Carson County
1
La Plata County
1
Lincoln County
1
Montezuma County
1
New Mexico
1
Park County
1
Pennsylvania
1
Pike National Forest
1
Prowers County
1
Prowers County (Colo.)
1
Rifle Region
1
Rio Grande County
1
Saguache County
1
San Juan National Forest
1
San Juan National Forest (Colo.)
1
Southwest, New
1
Uncompahgre National Forest
1
Washington County
1
Wyoming
1