Slope gradient commonly ranges from 1 to 4 percent, but may be as high as 8 percent. The soils formed in loamy colluvium overlying mixed basic and acid Blue Ridge rocks. Mean annual air temperature ranges from 45 to 55 degrees F. Mean annual precipitation ranges from 40 to 45 inches. These are the established Myersville and Catoctin soils and the tentative Brumbaugh soils, and the proposed Purcellville , Meadowville , Philomont , and Tankerville soils. Purcellville, Philomont, Tankerville, Myersville, and Catoctin soils are on the adjacent convex uplands and are well drained.
Brumbaugh soils are on gently sloping mountain footslopes and colluvial fans.
Middleburg soils are in narrower upland drainageways. Scattersville soils are moderately well to somewhat poorly drained. Runoff is slow to moderate, Permeability is slow. The majority of the Scattersville soils are in pasture or used for hay production. Due to wetness, very little of the acreage has been developed for residential use.