Clyde soils formed in stratified materials overlying glacial till and are in drainageways below Jameston soils. Cresco, Kenyon, Protivin, and Riceville soils have browner B horizons and are on ridges and side slopes above Jameston soils. Permeability is moderate in the loamy sediments and moderately slow in the glacial till. Runoff is slow. Commonly cropped to corn, soybeans, and small grain where drained.
Undrainged areas are in pasture.
Native vegetation was grasses tolerant to excessive wetness. The series is of small extent. Howard County, Iowa, 1969.