The Maupin series consists of moderately deep, well drained soils that formed in loess and ash overlying a duripan.
Maupin soils are on mesas or plateaus.
Slopes are 0 to 35 percent. Maupin loam, cultivated. The solum is 20 to 32 inches thick. The mollic epipedon is 10 to 20 inches thick and may include the upper part of the Bw horizon. Depth to the duripan is 20 to 40 inches and depth to bedrock is 25 to 45 inches.