Willette soils are on lake plains, ground moraines, or end moraines. They are in former lakes or ponds that range in size from a few acres to several hundred acres. Slopes are less than 2 percent. Very poorly drained. The depth to the seasonal high water table ranges from 1 foot above the surface to 1 foot below the surface from November to May.
Surface runoff is very slow.
Permeability is rapid in the organic layers and slow in the clayey material. The greater part of this soil is in natural vegetation of alder, quaking aspen, willow, dogwood, American elm, white ash, red maple, and a few conifers. A few acres are drained and used for pasture and truck crops. The southern part of the lower peninsula of Michigan, New York, Ohio, Indiana, and Wisconsin. Sanilac County, Michigan, 1955.