These soils formed in loamy and sandy outwash. In nearby higher-lying areas are the moderately well drained Brems soils. Near the generalized mesic-frigid line, the somewhat poorly drained Meehan soils and the poorly drained and very poorly drained Newson soils, both of which are classified frigid, are associated with the Leola soils. The Meehan soils are on nearly level slopes and the Newson soils are in depressions or drainageways. Somewhat poorly drained.
Surface runoff is slow.
Permeability is moderately rapid in the solum and rapid in the substratum. Most areas have been cleared and are cultivated. Native vegetation was a mixture of grasses and deciduous and coniferous trees. Small grain, corn, and clover are the principal crops. Some areas are irrigated and specialty crops are grown.