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Hilly plains, river breaks, terraces, and floodplains that formed in alluvium, sedimentary rocks, and some glacial till. Elevations range from 1700 to 2000 feet. Drainage density is high.
Mean annual precipitation ranges from 10 to 14 inches, about 20 percent falling as snow. The soil temperature and moisture regimes are frigid and typic ustic.
Wheatgrass-needlegrass and Northern floodplain forest.
Landform | Geology | Soil Taxa |
---|---|---|
Plains | Sedimentary | Ustochrepts/Ustorthents/Haploborolls |
Breaks/terraces | Alluvium/till | Ustochrepts/Argiborolls/Ustorthents |
Floodplains | Alluvium | Ustifluvents |
The primary natural disturbance is erosion. Land use is predominantly grazing and recreation.