These are the Egan , Ihlen , Moody , and Nora series. Egan soils have glacial till at depths of 24 and 40 inches. Ihlen soils have bedrock at depths of 20 and 40 inches. Moody and Nora soils have lower sand content. Moody soils are leached to greater depths.
Wentworth soils are nearly level to rolling on uplands.
Surfaces are plane to convex, and slope gradients range from 0 to 9 percent. These soils formed in silty glacial drift. In some areas glacial till is at 40 to 60 inches. Mean annual temperature ranges from 45 to 52 degrees F, and the mean annual precipitation ranges from 20 to 26 inches. These are the competing Egan soils and the Beadle , Chancellor , Clarno , Ethan , Huntimer , Shindler , Steinauer , Trent , Viborg , Wakonda , and Whitewood soils.