The Brenton, Drummer, and Flanagan soils all are on nearly level or gently sloping parts of the landscape and have lower chroma in the upper part of the B horizon. La Rose soils typically have steeper slopes, a higher content of sand in the solum, and carbonates within a depth of 24 inches. Moderately well drained. A perched seasonal high water table is at a depth of 2.0 to 3.5 feet at some time between February and April in normal years. The potential for surface runoff is low or medium.
Permeability is moderate in the solum and moderately slow in the substratum.
Most areas are used to grow corn, soybeans, wheat, oats, and hay. Native vegetation is prairie grasses. Central and northern Illinois and south-central Wisconsin. Ford County, Illinois, 1929. Previously correlated Saybrook soils that developed in silt loam glacial till in eastern Illinois are part of the glacial moraine in which the Graymont series has been established.