The mean annual temperature ranges from 49 degrees to 53 degrees F, and the mean annual precipitation ranges from 32 to 44 inches. These are the Brenton , Camden , Celina , Crosby , Fincastle , Martinsville , Miami , Proctor , Starks , and Whitaker soils. Mahalasville soils are in a drainage sequence with the well drained Camden, Martinsville, and Proctor soils that are on the higher topographic positions, and the somewhat poorly drained Brenton, Starks, and Whitaker soils on the slightly higher knolls and ridges. Mahalasville soils are also mapped in depressions near the till derived, well drained Miami soils, moderately well drained Celina soils, and the somewhat poorly drained Crosby and Fincastle soils. Very poorly drained.
Surface runoff is slow or ponded.
Permeability is moderate. Most of these soils are cultivated. Alfalfa, clover, corn, soybeans, and wheat are the principal crops. The series is of moderate extent. Morgan County, Indiana, 1937.