List of Areas of Critical Environmental Concern in Colorado

Colorado ACECs[1][2]
  • Adobe Badlands[3] – 6,783 acres (27.45 km2)
  • American Basin[4] – 1,595 acres (6.45 km2)
  • Anasazi Culture[4] – 156,000 acres (631 km2)
  • Arkansas Canyonlands[4] – 23,921 acres (96.80 km2)
  • Atwell Gulch – 2,900 acres (11.74 km2)
  • Badger Wash – 1,520 acres (6.15 km2)
  • Barger Gulch Heritage Area – 535 acres (2.17 km2)
  • Beaver Creek – 12,081 acres (48.89 km2)
  • Black's Gulch – 800 acres (3.24 km2)
  • Blanca Wildlife Habitat Area – 8,600 acres (34.8 km2)
  • Blue Hill – 4,178 acres (16.91 km2)
  • Browns Canyon – 11,697 acres (47.34 km2)
  • Bull Gulch – 10,214 acres (41.33 km2)
  • Coal Draw – 1,840 acres (7.45 km2)
  • Coal Oil Rim – 3,210 acres (12.99 km2)
  • Cucharas Canyon – 1,866 acres (7.55 km2)
  • Cumbres and Toltec Railroad – 3,824 acres (15.48 km2)
  • Debris Hazard – 7,126 acres (28.84 km2)
  • Deep Creek – 2,470 acres (10.00 km2)
  • Deer Gulch – 1,810 acres (7.32 km2)
  • Dillon Pinnacles – 532 acres (2.15 km2)
  • Droney Gulch – 705 acres (2.85 km2)
  • Duck Creek – 3,430 acres (13.88 km2)
  • Dudley Bluffs – 1,630 acres (6.60 km2)
  • East Douglas Creek – 47,610 acres (192.67 km2)
  • Elephant Rocks – 1,338 acres (5.41 km2)
  • Escalante Canyon – 1,895 acres (7.67 km2)
  • Fairview[3] – 377 acres (1.53 km2)
  • Garden Park National Natural Landmark – 2,728 acres (11.04 km2)
  • Glenwood Springs Debris Flow Hazard Zones – 6,100 acres (24.69 km2)
  • Grand Hogback – 4,300 acres (17.40 km2)
  • Grape Creek – 15,978 acres (64.66 km2)
  • Gunnison Gravels – 5 acres (0.02 km2)
  • Gunnison Sage Grouse – 22,000 acres (89.03 km2)
  • Gypsum Valley – 13,135 acres (53.16 km2)
  • Hardscrabble-East Eagle – 4,200 acres (17.00 km2)
  • Indian Creek – 2,300 acres (9.31 km2)
  • Irish Canyon – 11,680 acres (47.27 km2)
  • Juanita Arch – 1,600 acres (6.47 km2)
  • Kremmling – 674 acres (2.73 km2)
  • Kremling Ammonite Site Research Natural Area[4] – 160 acres (0.65 km2)
  • Laramie River – 1,783 acres (7.22 km2)
  • Los Mogotes – 33,456 acres (135.39 km2)
  • Lower Colorado River – 9,000 acres (36 km2)
  • Lower Greasewood Creek – 210 acres (0.85 km2)
  • Lyons Gulch – 400 acres (1.62 km2)
  • McCoy Fan Delta – 1,500 acres (6.07 km2)
  • McElmo Rare Lizard and Snake – 427 acres (1.73 km2)
  • Moosehead Mountain – 8,940 acres (36.18 km2)
  • Mosquito Pass – 4,036 acres (16.33 km2)
  • Mount Logan Foothills – 4,000 acres (16.19 km2)
  • Mt. Garfield – 2,400 acres (9.71 km2)
  • Native Plant Community – 4,577 acres (18.52 km2)
  • Needle Rock[3] – 80 acres (0.32 km2)
  • North Park Natural Area – 4,444 acres (17.98 km2)
  • North Park Phaceila – 300 acres (1.21 km2)
  • North Sand Hills – 486 acres (1.97 km2)
  • Oil Spring Mountain – 18,260 acres (73.90 km2)
  • Phantom Canyon – 6,096 acres (24.67 km2)
  • Pyramid Rock – 470 acres (1.90 km2)
  • Rajadero Canyon – 3,632 acres (14.70 km2)
  • Raven Ridge – 4,980 acres (20.15 km2)
  • Red Cloud Peak – 5,947 acres (24.07 km2)
  • Rio Grande – 2,830 acres (11.45 km2)
  • Roan and Carr Creeks – 33,600 acres (135.97 km2)
  • Rough Canyon – 1,470 acres (5.95 km2)
  • Ryan Gulch – 1,440 acres (5.83 km2)
  • San Luis Hills/Flattop – 29,261 acres (118.42 km2)
  • San Miguel River[3] – 20,964 acres (84.84 km2)
  • Sheep Creek Uplands – 3,900 acres (15.78 km2)
  • Sinbad Valley – 6,400 acres (25.90 km2)
  • Slumgullion National Natural Landmark – 1,407 acres (5.69 km2)
  • South Beaver Creek – 4,565 acres (18.47 km2)
  • South Cathedral Bluffs – 1,330 acres (5.38 km2)
  • South Shale Ridge – 27,800 acres (112.50 km2)
  • The Palisade – 19,178 acres (77.61 km2)
  • Thompson Creek – 4,286 acres (17.34 km2)
  • Trickle Mountain – 44,521 acres (180.17 km2)
  • Troublesome Creek – 998 acres (4.04 km2)
  • Unaweep Seep Research Natural Area – 37 acres (0.15 km2)
  • West Antelope Creek – 28,215 acres (114.18 km2)
  • White River Riparian – 950 acres (3.84 km2)
  • Yanks Gulch/Upper Greasewood Creek – 2,680 acres (10.85 km2)

See also

References
  1. "Areas of Critical Environmental Concern". United States. Bureau of Land Management. Retrieved 2019-04-30.
  2. The actual list is in an Excel file here.
  3. "Draft Evaluation of Proposed and Existing Areas of Critical Environmental Concern for the Uncompahgre Planning Area" (PDF). United States Department of the Interior, Bureau of Land Management. June 2010. Retrieved October 22, 2012.
  4. "BLM Colorado: Land Use Planning - Areas of Critical Environmental Concern". United States Department of the Interior, Bureau of Land Management. August 12, 2008. Archived from the original on May 30, 2010. Retrieved October 22, 2012.
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