Annandale soils have a fragipan and the Duffield and Washington soils have base saturation higher than 35 percent and overlie limestone or limey conglomerate. Raritan soils are on terraces and have a fragipan. Rowland soils are on floodplains and lack an argillic horizon. Pattebug are well drained. Runoff is moderate to rapid depending on slope.
Internal drainage is good.
Permeability is moderately rapid in the B horizon and rapid in the C horizon. Most of these soil areas are wooded. Locally, gentle slopes are cleared and used for growing corn, hay or pasture. Natural vegetation is forest of red, black, chestnut and white oak, some beech, yellow poplar, black birch and ash. Central New Jersey and possibly Maryland and eastern Pennsylvania.