The Wakonda series consists of very deep, somewhat poorly drained soils formed in silty sediments on uplands.
Permeability is moderate.
Slopes range from 0 to 3 percent. When described the soil was moist to 32 inches and wet below. 27, T. 93 N., R. 52 W., USGS Vermillion quadrangle, Lat. 96 degrees 57 minutes 53.86 seconds W., Long. 42 degrees 51 minutes 05.09 seconds N., NAD27.