Thornthwaite annual P-E index ranges from 34 to 42. These are the Brownell , Harney , Heizer , and Wakeen soils. Brownell, Heizer, and Wakeen soils are underlain by limestone or chalk at depths less than 40 inches and are on positions below Mento soils. Harney soils are generally above Mento soils. Runoff is slow or medium.
Permeability is slow.
Most areas of Mento soils are cultivated. The principal crops are grain sorghum and winter wheat. Native vegetation is mostly mid and short grasses, Western wheatgrass, sideoats grama, blue grama, and buffalograss. It is of large extent. Ellis County, Kansas, 1970.