The Houdek and Prosper soils are fine-loamy. In addition, the Prosper soils have mollic epipedons more than 20 inches thick. Houdek soils are on similar landscape positions. The Prosper soils are on plane or slightly concave positions in upland swales and on foot slopes. Surface runoff is negligible on nearly level areas and high on more sloping areas.
Permeability is moderately slow or slow.
When cultivated, small grain and alfalfa are the principal crops. Large acreages are used for rangeland. Native vegetation is mainly western wheatgrass, blue grama, green needlegrass, little bluestem, big bluestem, sedges, and forbs. East-central South Dakota. The series is extensive.