The Yeddo series consists of very deep, somewhat poorly drained soils formed in loess and are underlain by loamy glacial till at a depth of greater than 60 inches.
Permeability is moderate in the solum and moderately slow in the underlying till.
These soils are on till plains and outwash plains. Slopes range from 0 to 2 percent. Yeddo silt loam - on a 1 percent convex slope in a cultivated field. The solum is 30 to 60 inches thick. Depth to free carbonates ranges from 26 to 55 inches.