The Jimtown series consists of very deep, somewhat poorly drained soils formed in outwash deposits with rock fragments consisting of mostly sandstone, shale, and quartz pebbles. These soils are on stream terraces, outwash terraces, outwash plains, and beach ridges.
Permeability is moderate in the solum and moderately rapid in the substratum.
Slope ranges from 0 to 6 percent. Depth to the base of the argillic horizon ranges from 25 to 46 inches. Thickness of the solum ranges from 25 to 54 inches. Rock fragments are dominantly sandstone and shale, with a significant portion of quartz pebbles. The particle size control section averages 18 to 27 percent clay.