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Level III Ecoregions of Colorado

Revised April 2000
National Health and Environmental Effects Research Laboratory
U.S. Environmental Protection Agency

level III ecoregions of Colorado region 18   18. Wyoming Basin
region 20   20. Colorado Plateaus
region 21   21. Southern Rockies
region 22   22. Arizona/New Mexico Plateau
region 25   25. Western High Plains
region 26   26. Southwestern Tablelands