Edinburg soils have E horizons and thinner mollic epipedons. Haig soils have more clay in the Bt horizons. Mazaska soils have more sand and coarse fragments in the sola. Minnetonka soils tend to have thinner sola and more clay in the Bt horizon. Worthing soils have more clay in the argillic horizons and typically have thicker mollic epipedons.
Bremer soils are on low stream terraces or high second bottomlands.
Their slope gradient typically is less than 2 percent. Bremer soils formed in silty alluvium of Recent Age that contains less than 15 percent total sand. Mean annual temperature is about 49 to 54 degrees F, and mean annual precipitation ranges from 30 to 35 inches. These are the Colo , Ely , Judson , Nevin , Wiota and Zook soils. The Nevin and Wiota soils, though of somewhat coarser texture, are considered as the somewhat poorly and moderately well drained members of the same drainage sequence as the Bremer soils.