MLRA 55C - Southern Black Glaciated Plains South Dakota 20,240 km2 (7,810 mi2)

Soils:
Most of the soils are Ustolls. They are deep, well drained and moderately well drained, and sandy to clayey. These soils have a mesic temperature regime and mixed mineralogy. The nearly level to moderately sloping Argiustolls (Houdek and Prosper series), Haplustolls (Clarno, Ethan, and Bonilla series), and Natrustolls (Dudley, Jerauld, and Stickney series) are on till plains. Ustorthents (Betts series) occupy the steeper parts of the landscape, and Argialbolls (Tetonka series) are in upland depressions.

12/16/98