331Ab Palouse Hills

Landscape Characteristics:

Hills covered with deep loess underlain by basalt. Elevations range from 1000 to 5000 feet. Drainage density is low.

Climate:

Mean annual precipitation ranges from 10 to 25 inches, most falling as snow in the winter. The soil temperature and moisture regimes are frigid and typic xeric.

Potential Vegetation:

Wheatgrass-bluegrass

Relationships of Dominant Map Unit Components:

Landform Geology Soil Taxa
Hills Loess over basalt Haploxerolls/Argixerolls/Xerochrepts

Disturbance and Land Use:

The primary natural disturbance is wind and fire. Land use is predominantly dryland farming and grazing.