Elevation ranges from 950 to 1100 above mean sea level. These are the Bremer , Calco , Colo , Nevin , Nodaway and Zook soils. Nishna soils typically are on lower elevations and wetter than all but the Calco soils. Nodaway soils are coarser textured, lighter colored, and are stratified. Runoff accumulates on this soil from adjacent soils.
Permeability is slow.
Native vegetation was sedges and swamp grasses. Corn and soybeans are the principal crops when adequate drainage is possible. Some small grain and hay is also grown. Along the Missouri River tributaries in Iowa and possibly Nebraska and Missouri. They also occur in southwest Minnesota.