Region
Colorado
Douglas County
8
Eagle County
6
Garfield County
6
El Paso County
5
Park County
4
Chaffee County
3
Montrose County
3
Piceance Creek Basin
3
Teller County
3
Elbert County
2
Summit County
2
Animas River Watershed (Colo. and N.M.)
1
Archuleta County
1
Big Thompson River Valley
1
Costilla County
1
Deer Creek (Summit County, Colo.)
1
Denver Metropolitan Area
1
Fruitland Formation (Colo. and N.M.)
1
Gunnison County
1
Las Animas County
1
Mesa County
1
Piceance Creek Basin (Colo.)
1
Pitkin County
1
Pueblo
1
Pueblo Region
1
Silverton Region
1
Snake River (Colo.)
1
Uinta Basin (Utah and Colo.)
1
Utah
1
Wyoming
1