The Gallman series consists of very deep, well drained soils formed in poorly sorted outwash with a high content of shale of fine gravel size. These soils are on outwash plains, outwash terraces, kames, and moraines.
Permeability is moderately rapid.
Slope ranges from 0 to 18 percent. Gallman loam on a 4 percent slope in a cultivated field at an elevation of 813 feet. 40 degrees 43 minutes 04 seconds N. and long. 84 degrees 40 minutes 07 seconds W., NAD 27. Depth to the base of the argillic horizon, solum depth, and depth to carbonates typically are 55 to 120 inches.