Trent, Viborg, and Whitewood soils have mollic epipedons greater than 20 inches thick. The Beadle, Ethan, Shindler, and Steinauer soils formed in glacial till and are on convex slopes in the more undulating areas. Clarno soils have a fine-loamy control section and are on the convex to plane slopes of the landscape. Huntimer soils have a fine textured control section and are on slightly higher landscapes. Wakonda soils have a calcic horizon and are at edges of swales and depressions.
Permeability is moderate.
Permeability of the glacial till is moderately slow. The moderately well drained phase has a perched water table at a depth of 3 to 6 feet from October to July in most years. Most areas are used to grow corn, small grain, soybeans, and alfalfa. The native vegetation is mainly little bluestem, big bluestem, needleandthread, western wheatgrass, blue grama and sideoats grama, and green needlegrass. East-central and southeastern South Dakota and northwest Iowa.