The Cass, Grigston, Inavale, and Sarpy soils have a lower seasonal water table. Lex soils are moderately deep over coarse sand or gravelly sand. Platte soils are shallow over sand or gravelly sand. Somewhat poorly drained. Runoff is slow.
Permeability is moderate.
These soils are occasionally flooded. The seasonal high water table ranges from 1 to 3 feet and is highest in the winter or early spring when stream flow is highest. By late summer the water table may recede to a depth of 3 to 6 feet or more. Most of the acreage is in cultivated crops, mainly corn, alfalfa, grain sorghum, and soybeans. Many areas are irrigated.