The Berkshire series consists of very deep, well drained soils formed in till. They are on glaciated uplands.
Permeability is moderate or moderately rapid.
Slope ranges from 3 to 75 percent. Latitude 42 degrees 43 minutes 12 seconds N., longitude 72 degrees 55 minutes 56 seconds W., NAD 27. Thickness of the solum ranges from 16 to 36 inches. The O horizon is slightly, moderately, or highly decomposed plant material. Reaction ranges from extremely acid to moderately acid unless limed.