Slopes range from 0 to 2 percent. Treaty soils formed in 24 to 40 inches of loess and the underlying Wisconsinan aged glacial till. The mean annual temperature ranges from 50 to 55 degrees F, and the mean annual precipitation ranges from 36 to 44 inches. These soils do not have mollic epipedons and are on higher positions on till plains and moraines. The potential for surface runoff is negligible.
Permeability is moderate in the solum and slow in the underlying material.
An intermittent high water table is 0.5 foot above the surface to 1 foot below the surface in most years. Most areas are used to grow corn, soybeans, wheat, and hay. A few areas are used to grow tomatoes, field beans, and other specialty crops. Native vegetation is deciduous forest. The series is of moderate extent.