The Mayville series consists of very deep, moderately well drained soils formed in loess and the underlying glacial till on ground moraines.
Permeability is moderate in the solum and moderately slow in the substratum.
Slopes range from 0 to 15 percent. Mean annual precipitation is about 30 inches. Mayville silt loam - on a 4 percent slope in a pasture at an elevation of about 1,040 feet. 8, T. 10 N., R. 18 E. USGS Hartford West Quad. Depth to the base of the argillic horizon ranges from 24 to 44 inches.