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to 3 percent. Mean annual air temperature ranges from 45 to 52 degrees F. Mean annual precipitation ranges from 25 to 32 inches. Frost-free days range from 125 to 165. Elevation above sea level ranges from 700 to 1600 feet. GEOGRAPHICALLY ASSOCIATED SOILS: The main ones are the Cordova, Lester, and Hamel soils. These soils formed in materials similar to the Le Sueur soils and are members of a hydrosequence with the Le Sueur soils. The poorly drained Cordova and Hamel soils are common associates on adjacent nearly level slopes. The well drained Lester soils are the most common associate on the undulating to gently undulating slopes. The well drained Hayden soils and the poorly drained Dundas soils are associates in some places. DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Surface runoff is low. Permeability is moderate. An apparent water table is at 1.5 to 2.5 feet during November to June in most years. USE AND VEGETATION: Mostly under cultivation with corn, soybeans, grain, and hay the principal crops.Native vegetation was deciduous forest, dominantly elm, basswood, and maple in some areas, and oak with prairie and brush understory in the timber outliers within the prairie. DISTRIBUTION AND EXTENT: South-central Minnesota and north-central Iowa. This soil is extensive. MLRA OFFICE RESPONSIBLE: St. Paul, Minnesota SERIES ESTABLISHED: Le Sueur County, Minnesota, 1944. REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon-the zone from the surface to 13 inches(A and AB horizons); argillic horizon- the zone from 13 to 41 inches(Bt horizons); aquic subgroup-hue of 10YR and chroma of 2 immediately below mollic epipedon. Somewhat poorly drained matches depth to redox(2 chroma at 17 inches) and taxonomic class(Aquic subgroup)closer than the previous moderately well drained class.