Ripon soils have thinner sola and are underlain by limestone bedrock at depths of 20 to 40 inches. Nasset soils lack a mollic epipedon. Ashdale soils are on nearly level and gently sloping ridgetops and moderately sloping to steeply sloping convex slopes in dissected upland areas. Slope gradients commonly are 3 to 12 percent and range from 0 to 20 percent. Ashdale soils formed in 36 to 50 inches of loess and in a thin layer of residuum weathered from limestone bedrock.
Summers are hot and winters are cold.
Mean annual temperatures range from 45 to 53 degrees F, and average annual precipitation ranges from 28 to 40 inches. These are the Dodgeville , Nasset , Palsgrove , and Tama soils. Dodgeville soils are in a contrasting particle size family and are underlain by limestone bedrock at depths of 20 to 40 inches. In areas where Ashdale soils are on ridgetops, Dodgeville soils are on the steeper side slopes. Where Ashdale soils are on side slopes, Tama soils commonly are on ridgetops.