Depth to an intermittent water table is greater than 6 feet. Many areas in open woods are used for grazing. Some are used to grow corn, oats, and hay. Native vegetation is oak-hickory forest. Central and eastern Iowa, southern Wisconsin, southeastern Minnesota, southern Michigan, northern Indiana and Illinois.
Chelsea soils are moderately extensive.
Tama County, Iowa, 1938. Differentia between Colonie soils and the Chelsea soils are weak and need more quantification.