USFS Logo Administering the National Forests of Colorado:
An Assessment of the Architectural and Cultural Significance of Historical Administrative Properties
NPS Logo

Appendix A
Development of Colorado National Forests to 1950

Dates below refer to the establishment of Forests or major changes that affected Forest boundaries and/or administration. Minor land additions, transfers, and eliminations are not noted. Data are taken from Establishment and Modification of National Forest Boundaries - A Chronologic Record 1891-1973; compiled by the Division of Engineering, Washington D.C., October 1973. USDA, Forest Service.


ARAPAHO NATIONAL FOREST
Established from portions of Medicine Bow, Pikes Peak, and Leadville Forests7/1/08

COCHETOPA NATIONAL FOREST
Cochetopah Forest Reserve6/13/05
Cochetopah National Forest3/4/07
Cochetopa National Forest7/1/08
   Leadville Forest Reserve5/12/05
   Leadville National Forest3/4/07
   Combined with Arapaho, Cochetopa, and others5/26/30
Cochetopa - Distributed entire Forest among Gunnison, Rio Grande and San Isabel7/1/44

GRAND MESA NATIONAL FOREST
Battlement Mesa Forest Reserve12/24/92
Battlement Mesa National Forest3/4/07
Battlement National Forest7/1/08
Grand Mesa National Forest3/11/24
   Fruita Forest Reserve2/24/06
   Fruita National Forest3/4/07
      Combined with Uncompahgre7/1/08
      Combined with Grand Mesa4/13/21

GUNNISON NATIONAL FOREST
Gunnison Forest Reserve5/12/05
Gunnison National Forest3/4/07

HOLY CROSS NATIONAL FOREST
Holy Cross Forest Reserve8/25/05
Holy Cross National Forest3/4/07
Sopris National Forest4/26/09
   Combined with Holy Cross8/7/20
Holy Cross, transferred entire Forest to White River1/1/45

MONTEZUMA NATIONAL FOREST
Montezuma Forest Reserve6/13/05
Montezuma National Forest3/4/07
   Divided entire Forest between San Juan and Uncompahgre7/1/47

PIKE NATIONAL FOREST
Pikes Peak Timber Land Reserve2/11/92
Pikes Peak Forest Reserve5/12/05
Pikes Peak National Forest3/04/07
Pike National Forest7/1/08
   Plum Creek Timber Land Reserve6/23/92
   South Platte Forest Reserve12/9/92
      Combined with Pikes Peak5/12/05

RIO GRANDE NATIONAL FOREST
Established from parts of San Juan and Cochetopah7/1/08

ROOSEVELT NATIONAL FOREST
Medicine Bow Forest Reserve (Wyo.)5/22/02
Medicine Bow Forest Reserve (Wyo. & Colo.)5/17/05
Medicine Bow National Forest3/4/07
Medicine Bow National Forest (Colo.)7/1/08
Colorado National Forest7/1/10
Roosevelt National Forest3/28/32

ROUTT NATIONAL FOREST
Park Range Forest Reserve6/12/05
Park Range National Forest3/4/07
Routt National Forest7/1/08
   Sierra Madre Forest Reserve11/5/06
   Sierra Madre National Forest3/4/07
   Hayden National Forest (Colo. & Wyo.)7/1/08
      Combined with Routt and Medicine Bow8/2/29

SAN ISABEL NATIONAL FOREST
San Isabel Forest Reserve4/11/02
San Isabel National Forest3/4/07
   Wet Mountains Forest Reserve6/12/05
   Wet Mountains National Forest3/4/07
      Combined with San Isabel7/2/08
   Las Animas Forest Reserve (Colo. & N.M.)3/1/07
   Las Animas National Forest (Colo. & N.M.)3/4/07
      Combined with San Isabel5/27/10

SAN JUAN NATIONAL FOREST
San Juan Forest Reserve6/5/05
San Juan National Forest3/4/07
   Durango National Forest6/29/11
      Combined with San Juan11/21/20

UNCOMPAHGRE NATIONAL FOREST
Uncompahgre Forest Reserve6/14/05
Uncompahgre National Forest3/4/07
   Fruita Forest Reserve2/24/06
   Fruita National Forest3/4/07
   Ouray Forest Reserve2/2/07
   Ouray National Forest3/4/07
      Combined with Uncompahgre7/1/08

WHITE RIVER NATIONAL FOREST
White River Plateau Timber Land Reserve10/16/91
White River Forest Reserve6/28/02
White River National Forest3/4/07
   La Sal Forest Reserve (Colo. and Utah)1/25/06
   La Sal National Forest (Colo. and Utah)3/4/07
   La Salle National Forest7/2/08
   La Sal National Forest3/16/09
   White River, added entire Holy Cross1/1/45
   La Sal, transferred entire forest to Manti7/1/49
   Manti, changed name to Manti-La Sal8/28/50


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Last Updated: 15-Jan-2008