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Foothills, terraces, and fans that formed in shale, siltstone, and terrace deposits. Elevations range from 3500 to 5000 feet. Drainage density is moderate.
Mean annual precipitation ranges from 15 to 19 inches, about 40 to 50 percent falling as snow. The soil temperature and moisture regimes are frigid and typic ustic.
Foothills prairie/Grama-needlegrass-wheatgrass
Landform | Geology | Soil Taxa |
---|---|---|
Foothills | Shale/siltstone | Haploborolls/Calciborolls/Argiborolls |
Terraces/fans | Terrace deposits/alluvium | Argiborolls/Calciborolls |
The primary natural disturbance is drought. Land use is predominantly livestock grazing.