The Fuegosta series consist of shallow over duripan well drained soils that formed in mixed alluvium.
Fuegosta soils are on erosional fan remnants of fan piedmonts.
Slopes are 2 to 8 percent. The mean annual precipitation is about 6 inches and the mean annual temperature is about 53 degrees. Fuegosta gravelly fine sandy loam, rangeland. Soil moisture - Usually dry, moist in some part for short periods during the winter and early spring months and for for 10 to 20 days cumulative between July and October due to convection storms. Depth to base of Bt horizon - 11 to 18 inches.