Reywat soils are hills, mountains, and plateaus. They formed dominantly in residuum derived from basalt or similar volcanic rocks. On steep slopes colluvium is a major portion of the parent material. Other areas have minor amounts of loess or volcanic ash in the A horizons. Slopes are 0 to 90 percent.
Most slopes have south aspects, but some face north, especially at the lower elevations.
Elevations range from 1,000 to 6,600 feet. The climate is semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 9 to 14 inches, including 1.5 to 5 feet of snowfall. The frost-free period is 80 to 160 days. These are the Babbington , Bakeoven , Lickskillet , Ruckles , and Ruclick soils.