Midco soils do not have a fragipan and are on flood plains lower in the landscape. Moderately well drained. Runoff is medium or high. Permeability is moderate above the fragipan and very slow in the fragipan. Most areas remain forested.
Native vegetation is mixed hardwoods with some interspersed shortleaf pine.
Some acreage was included in mapping with the Irondale series in St. Francois County, Missouri. The series is of moderate extent. Iron County, Missouri, 1988.