Permeability is moderately slow. In drained areas, depth to an intermittent apparent high water table is 0.5 foot to 2.0 feet from December to April in most years. Most areas are cropped. Corn, soybeans, milo, and small grain are the principal crops. More sloping areas are in forages for hay or pasture, or in woodland.
Native vegetation is deciduous forest.
Lawrence County, Illinois, 1932. Blair soils are not considered to have an aquic moisture regime. Soil colors with chroma of 2 in the upper part of the solum are believed to be relict. Severe erosion has truncated the typical pedon so that the Ap horizon is underlain immediately by a horizon with these grayer colors and mottles. Data for other pedons are on file at the SCS Illinois state office.