The Denham series consists of very deep, moderately well drained soils formed in sandy eolian deposits on outwash plains, glacial lake plains, and moraines.
Permeability is rapid or very rapid.
Slopes range from 0 to 5 percent. Denham fine sand on a 4 percent slope in a cultivated field, at an elevation of about 683 feet. The Ap horizon has hue of 10YR, value of 3 to 5, and chroma of 2 to 4. Where present, the A horizon has hue of 10YR, value of 2 or 3, and chroma of 1 to 3, and is 1 to 4 inches thick. The Ap or A horizon is loamy sand, loamy fine sand, sand, or fine sand.