The mean annual temperature is about 57 degrees F, and the mean annual precipitation is about 37 inches. Cotter silt loam - on a nearly level slope in a cultivated field. The mollic epipedon ranges from 24 to 36 inches in thickness. The A horizon has color value of 2 or 3 and chroma of 1 or 2. It is silt loam, loam, or silty clay loam.
Reaction is moderately acid to neutral.
The upper part of the Bt horizon has color value of 2 or 3 and chroma of 1 to 3. The lower part has color value of 4 or 5 and chroma of 3 or 4 with darker coatings on peds decrease with depth. It is silt loam or silty clay loam with 25 to 35 percent clay in the upper part and 25 to 30 percent clay in the lower part. Reaction is strongly acid to neutral. The BC and C horizon, where present, has hue of 10YR or 2.5Y, value of 4 to 6 and chroma of 2 to 4.