In undrained conditions, an apparent seasonal high water table is at a depth of 1.0 foot above the surface to 0.5 foot below the surface at some time between October and September in most years. The potential for surface runoff is negligible. Permeability is moderately slow. Most drained areas are used for growing cultivated crops. Corn and soybeans are the principal crops.
Most undrained areas are idle or are used for pasture.
Native vegetation is marsh grasses and sedges. The differentiae needed to clearly separate the Peotone series from the Shiloh series is not well defined in terms of soil properties. Both Peotone and Shiloh soils are in depressional parts of broad interfluves. Peotone soils are on the Wisconsinan till plain and Shiloh soils are on the Illinoian till plain. A marl substratum phase is currently recognized.