This page summarizes USDA SSURGO mapped soil information for DuPage County, Illinois.
Coverage measures mapped SSURGO intersection with Census land geometry. It does not mean that every parcel or point has complete soil information.
County summaries provide regional context across mapped soil units. Address lookup combines available public datasets for the Census-matched location.
| Symbol | Map Unit Name | Mapped Acres | % of Mapped Area |
|---|---|---|---|
| 805B | Orthents, clayey, undulating | 31,311.82 | 14.54% |
| 854B | Markham-Ashkum-Beecher complex, 1 to 6 percent slopes | 30,715.28 | 14.27% |
| 232A | Ashkum silty clay loam, 0 to 2 percent slopes | 15,505.03 | 7.2% |
| 531B | Markham silt loam, 2 to 4 percent slopes | 15,130.31 | 7.03% |
| 152A | Drummer silty clay loam, 0 to 2 percent slopes | 11,652 | 5.41% |
| 146A | Elliott silt loam, 0 to 2 percent slopes | 9,232.87 | 4.29% |
| 530B | Ozaukee silt loam, 2 to 4 percent slopes | 8,550.4 | 3.97% |
| 530C2 | Ozaukee silt loam, 4 to 6 percent slopes, eroded | 7,580.15 | 3.52% |
| 223B | Varna silt loam, 2 to 4 percent slopes | 7,399.29 | 3.44% |
| 531C2 | Markham silt loam, 4 to 6 percent slopes, eroded | 6,907.67 | 3.21% |
| 802B | Orthents, loamy, 1 to 6 percent slopes | 5,739.57 | 2.67% |
| 3107A | Sawmill silty clay loam, heavy till plain, 0 to 2 percent slopes, frequently flooded | 4,871.24 | 2.26% |
| W | Water | 4,392.61 | 2.04% |
| 614A | Chenoa silty clay loam, 0 to 2 percent slopes | 4,044.88 | 1.88% |
| 330A | Peotone silty clay loam, 0 to 2 percent slopes | 3,920.97 | 1.82% |
| Component | Drainage Class | Hydrologic Group | Estimated Acres | % of Mapped Area |
|---|---|---|---|---|
| Orthents | Moderately well drained, Well drained | C, B, D | 35,605.79 | 16.54% |
| Markham | Moderately well drained | C | 32,120.29 | 14.92% |
| Ashkum | Poorly drained | C/D | 27,485.79 | 12.77% |
| Ozaukee | Moderately well drained | C | 20,083.73 | 9.33% |
| Drummer | Poorly drained | B/D | 11,990.41 | 5.57% |
| Beecher | Somewhat poorly drained | C/D, D | 11,613.28 | 5.39% |
| Elliott | Somewhat poorly drained | C/D | 9,239.64 | 4.29% |
| Varna | Moderately well drained | C | 7,944.46 | 3.69% |
| Peotone | Very poorly drained | C/D | 5,837.54 | 2.71% |
| Sawmill | Poorly drained | B/D | 5,634.53 | 2.62% |
| Water | Unspecified | Unspecified | 4,424.98 | 2.06% |
| Chenoa | Somewhat poorly drained | C/D | 3,802.18 | 1.77% |
| Graymont | Moderately well drained | C | 3,665.05 | 1.7% |
| Mundelein | Somewhat poorly drained | B/D | 3,221.58 | 1.5% |
| Waupecan | Well drained | B | 2,946.32 | 1.37% |
Hydrologic soil groups are USDA/NRCS classifications related to runoff potential under specified soil conditions. They are not a property-level flood-risk rating.