Glenham soils are fine-loamy. Oko soils contain more clay in the series control section. Glenham and Oko soils are on similar landscapes to the Raber series. Runoff is slow on nearly level areas and medium on sloping areas. Permeability is moderately slow or slow.
Principal crops are corn, small grains, and alfalfa.
Native vegetation is mainly western wheatgrass, green needlegrass, blue grama, sideoats grama, sedges, and forbs. East-central South Dakota. The series is extensive. Potter County, South Dakota, 1955.