A horizons, lack AE horizons, and have grayer B horizons. In addition, Oran soils have chroma of 2 and are somewhat mottled in the upper part of the B horizon. Orwood soils lack stones and pebbles throughout the solum, and the Waubeek soils are higher in silt in the upper part of the solum. Moderately well drained. Surface runoff is medium or rapid.
Permeability is moderate.
Many areas are in pasture or trees. Some areas are used for corn, small grains, soybeans, and hay. Native vegetation was oak-hickory forest. Coggon soils are of small extent in Iowa. Bremer County, Iowa, 1965.