A Fragiaqualf-Fragiudalf catena in Wisconsinan loess overlying Illinoisan till shows strong evidence of lateral movement of clays. We extracted soils in 4 transects perpendicular to the gradation in drainage class (from poorly-drained to moderately-well drained) and analyzed soil texture with the pipet method. Correlations between clay content and drainage class were high. Correlations between clay content and the compound topographical index (CTI = ln(a/tanb, where a = the upstream contributing area, and b = the slope) were also high. One reason for this horizontal lessivage may be the fragipan and fragic properties of the poorly-drained soils. Clays become suspended and move to the more well-drained edges of the site. This is a "red edge"-type study. We analyzed the textures at three depths: 0-10 cm, 25-35 cm, and 55-65 cm. All samples were georeferenced, allowing for geostatistical and geospatial data analysis.