OH VA WI Established Series Rev. The Brookston series consists of very deep, poorly drained soils formed in up to 20 inches of silty material and the underlying loamy glacial till in depressions on till plains and moraines.
Permeability is moderate in the subsoil and moderately slow in the underlying material.
Slopes range from 0 to 3 percent. The mean annual temperature is about 50 degrees F, and mean annual precipitation is about 35 inches. Brookston loam - on a 1 percent concave slope in a cultivated field. The depth to the base of the argillic horizon is 30 to 70 inches. Depth to free carbonate ranges from 40 to 70 inches.