Abilene, Cutter, and Dodson soils are in drier climates. Blanket soils contain 20 percent calcium carbonate in the C horizon. McLain soils have redder hues in the B horizon. Wolco soils have limestone at a depth of 40 to 60 inches. Brewer soils are on nearly level flood plains that are rarely flooded.
Surfaces are plane to slightly concave.
The climate is subhumid. These are the competing Mclain series, and the Port and Reinach series. McLain, Port, and Reinach soils are also on flood plains. Port and Reinach soils have less than 35 percent clay in the control section. Mclain soils have upper bt horizons with hues of 5YR or redder.