| Alluvium on Active Floodplains |
| Alluvium from Mixed Sources |
| Deep Loess |
| Eolian Sands / Sandy Sediments |
| Clayey and Silty Lacustrine Sediments |
| Illinoian Till |
| Illinoian Outwash |
| Loamy Coastal Sediments |
| Sandy Coastal Sediments |
| Residuum from Carbonate Rocks |
| Residuum from Calcareous Clastic Rocks |
| Residuum from Acid Clastic Rocks |
| Colluvium from Carbonate Rocks |
| Colluvium from Calcareous Clastic Rocks |
| Colluvium from Acid Clastic Rocks |
| Mining Regolith |
| Disturbed Areas / Urban Land / Mining Regolith / Pits / Rock Outcrops |
| Not Surveyed or No Digital Data Available |
| Water |