Octagon soils are on similar landform positions nearby. Octagon soils have a darker colored surface layer. The poorly drained Pella soils are in drainageways. Moderately well drained. The potential for surface runoff is medium on the gentle slopes and rapid on the steeper slopes.
Permeability is moderate in the solum and moderately slow in the underlying material.
An intermittent perched high water table is at a depth of 2.0 feet to 3.5 feet in most years. Most areas are cultivated, but some are in pasture and woodland. The principal crops are corn, soybeans, small grain, or hay. Native vegetation is hardwood forest. McHenry County, Illinois, 1996.