The Orrville series consists of very deep, somewhat poorly drained soils formed in loamy alluvium on flood plains.
Permeability is moderate in the solum and moderate or moderately rapid in the underlying material.
Slope ranges from 0 to 3 percent. Orrville silt loam, on a level area in a cultivated field at an elevation of about 640 feet above msl. Thickness of the solum ranges from 24 to 50 inches. Average clay content ranges from 18 to 30 percent and average sand content coarser than very fine sand ranges from 15 to 40 percent in the particle-size control section. Thin A horizons in some pedons have value of 2 or 3, and chroma of 1 or 2.