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Mountains and foothills that formed in sedimentary and metasedimentary bedrock. Elevations range from 5000 to 9000 feet. Drainage density is moderate.
Mean annual precipitation ranges from 25 to 80 inches, about 60 percent falling as snow. The soil temperature and moisture regimes are cryic and typic ustic.
Douglas-fir forest/Western spruce-fir forest/Foothills prairie
Landform | Geology | Soil Taxa |
---|---|---|
Mountainsides/ridges | Sandstone/shale/limestone/volcanics/conglomerate | Cryoborolls/Cryoboralfs/Cryochrepts |
Foothills | Sandstone/shale/limestone | Cryoborolls/Cryoboralfs/Cryochrepts/Argiborolls |
The primary natural disturbance is fire. Land use is predominantly timber harvest, mining, grazing, and recreational development.