The Wiota series consists of very deep, well and moderately well drained soils that formed in silty alluvium.
Wiota soils are on stream terraces.
Slopes range from 0 to 5 percent. 41 degrees 6 minutes 5.5 seconds N. and long. 94 degrees 44 minutes 54.4 seconds W., NAD 83. The mollic epipedon is 18 to 32 inches thick and includes the upper part of the B horizon in some pedons. Depth to free carbonates is 60 inches or more.