The mean annual temperature is about 38 degrees F., and the average annual precipitation is about 26 inches. Pritchett silt loam, rangeland. The solum is 60 to 70 inches, or more, thick. Texture changes abruptly between the A2 and B2t horizon at depths between 24 and 40 inches. Clay content increases more than 20 percent within a vertical distance of less than 3 inches.
Coarse fragments are mainly cobbly and stony.
The soils are usually moist, and are never dry in all parts of the moisture control section for as long as 60 consecutive days within a period of 3 months after the summer solstice in more than 7 out of 10 years. The Al horizon is very dark grayish brown, dark grayish brown or very dark brown. It has value of 3 through 5 dry and 2 or 3 moist, and chroma of 2 or 3. It is slightly acid to neutral. The A2 horizon has hue of 10YR or 7.5YR, value of 5 or 6 dry and 4 or 5 moist, and chroma of 2 or 3.