Slopes are 0 to 3 percent. Masham soils are shallow, and are on lower side slopes or convex knolls and ridges. Runoff is slow or medium. Permeability is very slow. Nearly all areas are cultivated.
Principal crops are wheat and grain sorghum.
Native vegetation was tall and mid grasses. The series is of moderate extent. Reno County, Kansas, 1989. The name is coined from the Renfrow series. These soils were formerly mapped as Renfrow soils.