The Risue series consists of shallow, well drained soils formed in alluvium from basic igneous rocks.
Risue soils are on old dissected alluvial fans.
Slopes are 0 to l5 percent. Mean annual temperature is 50 degrees F., and mean annual precipitation is about 5 inches. Risue extremely stony loam, rangeland. Neutral or mildly alkaline. Clay, sandy clay, clay loam, or gravelly clay.