The soils formed in sandy glaciofluvial deposits. The mean annual temperature ranges from 45 to 49 degrees F, and the mean annual precipitation ranges from 29 to 40 inches. The poorly drained Granby and Jebavy soils, the somewhat poorly drained Pipestone and the excessively drained and moderately well drained Plainfield are common associated soils. Somewhat poorly drained. The potential of surface runoff is negligible or very low.
Permeability is slow in the ortstein and rapid in the rest of the profile.
Principal tree species included aspen, white pine, black spruce, red maple, northern white cedar, and paper birch. Lower Michigan, Indiana, and New England. The series is of moderate extent. Allegan County, Michigan, 1901. The Saugatuck soils were mapped as both somewhat poorly and poorly drained soils.