They formed in sandy alluvium that is more than 6 feet thick. Mean annual temperature ranges from 47 to 56 degrees F, and mean annual precipitation ranges from 30 to 34 inches. These are the Chequest , Colo , Nodaway , and Vesser soils. Chequest, Colo, and Vesser soils are on the more level first bottomlands, are finer textured, and are poorly drained. Nodaway soils are on similar landforms, but formed in finer textured sediments.
Permeability is rapid.
Runoff is slow. During parts of the year a temporary water table can be present at 3 to 6 feet for periods of less than 2 weeks. These soils are subject to flooding unless protected by levees. Some areas are partly leveled and cleared of young tree growth and are now cultivated. Corn and soybeans are usually grown.