James, Lamo, and Luton soils are on similar landscapes as the Clamo soil. James soils have carbonates at or near the surface and contain more salts. Lamo soils have a fine-silty control section. Luton soils do not have free carbonates to depths of 36 inches or more and do not contain gypsum. Surface runoff is slow or very slow.
Permeability is slow.
Principal crops are native hay, pasture, corn, and small grains. Spring farming operations are frequently delayed because of high water tables and flooding. Native grasses are switchgrass, prairie cordgrass, sedges, and Reed canarygrass. Central and eastern South Dakota and northeast Nebraska. The series is of moderate extent.