They are somewhat poorly drained soils.
Permeability is moderate or moderately rapid over very rapid.
They formed in sandy and loamy alluvium deposited over coarse sand or gravelly sand on river valley flood plains. Slope ranges from 0 to 3 percent. Mean annual temperature is about 51 degrees F, and mean annual precipitation is about 25 inches at the type location. Platte loam with a slope of less than 1 percent in irrigated cropland. When described, the soil was moist throughout.