Soil moisture - Usually dry. The upper part of the moisture control section is moist for a very short time in late winter. Depth to bedrock - 21 to 40 inches. Fine sandy loam, sandy loam and coarse sandy loam. Skelon soils have a thick duripan over unconsolidated alluvium.
Shorim soils are on footslopes of hills and formed from igneous rock flows.
Slopes are 2 to 30 percent. Elevations are 3,000 to 4,500 feet. The climate is warm and arid. Distribution of precipitation is relatively even with slight peaks in January and August. Mean annual precipitation is 3 to 5 inches.