Slope ranges from 0 to 3 percent. Mean annual precipitation ranges from 35 to 50 inches. Allegheny, Kanawha, Cotaco, Markland, Monagahela, Purdy, and Tyler soils are on landscape positions similar to Guyan soils. Allegheny and Kanawha soils are well drained. Cotaco, Markland, and Monongahela soils are moderately well drained.
Purdy soils are poorly to very poorly drained.
Tyler soils are somewhat poorly drained and fine-silty. Monongahela and Tyler soils have fragipans. Berks, Dekalb, Gilpin, and Upshur soils formed in residuum on uplands and are well drained. Ernest, Jefferson, and Vandalia soils are on colluvial fans and footslopes. Ernest soils are moderately well drained and have a fragipan.