Eakin soils are fine-silty and are on similar landscapes. Java soils do not have an argillic horizon and are on crests and ridges above the Glenham soils. Prosper soils have a mollic epipedon greater than 20 inches thick and are in swales. Raber soils have a fine-textured argillic horizon and are on similar landscapes. Slow runoff on nearly level areas and medium on higher slopes.
Permeability is moderately slow.
Native vegetation is big bluestem, little bluestem, western wheatgrass, green needlegrass, needleandthread, sideoats grama, blue grama, sedge and forbs. The series is of moderate extent. Hughes County, South Dakota, 1970.