Muren soils formed in more than 80 inches of loess. The mean annual temperature ranges from 52 to 57 degrees F., the mean annual precipitation ranges from 40 to 46 inches, frost free days range from 170 to 210 days and elevation ranges from 340 to 850 feet above mean sea level. These are the Alford , Hosmer , Iva , and Princeton soils. Muren soils are in a drainage sequence with the well drained Alford soils and the somewhat poorly drained Iva soils. Alford soils are on higher landform positions and do not have iron depletions in the upper part of the argillic horizon.
Hosmer soils are on similar landform positions and have fragipans.
Princeton soils are on similar landform positions and have fine-loamy argillic horizons. Iva soils are on lower landform positions, have grayer colors in the subsoil and have a water table within a depth of 1 foot in most years. Moderately well drained. The potential for surface water runoff is nedligible to high. The depth to an intermittent apparent high water table is 1.0 foot to 2.5 feet from December to April in normal years.