MLRA 105 - Northern Mississippi Valley Loess Hills Illinois, Iowa, Wisconsin, and Minnesota. 57,520 km2 (22,210 mi2)

Soils:
Most of the soils are Udalfs. They are moderately deep and deep and medium textured. These soils have a mesic temperature regime, an udic moisture regime, and mixed mineralogy. Well drained Hapludalfs (Fayette, Dubuque, Seaton, Gale, Nordness, and Norden series) that formed in a loess mantle over bedrock or in glacial till are dominant. Nearly level to gently sloping Argiudolls (Tama, Dodgeville, Richwood, and Dakota series) and Hapludolls (Muscatine series) are on benches and broad ridgetops. Hapludolls (Frontenac, Brodale, and Bellechester series) are on steep slopes bordering the major valleys. Well drained Udifluvents (Dorchester, Chaseburg, and Arenzville series) are along stream bottoms. Quartzipsamments (Boone series) are on steep slopes, and nearly level Udipsamments (Plainfield and Gotham series) are on stream benches. Steep, stony, and rocky soils are also common in the area.

12/16/98