| Bedrock Near Surface |
| Ice Contact Deposit (Des Moines) |
| Lake Sand (Des Moines) |
| Outwash (Des Moines) |
| Mixed Till (Des Moines) |
| Till (Des Moines) |
|
| Glacial Till, Sand and Gravel (Des Moines) |
| Floodplain Alluvium (Loamy) |
| Floodplain Alluvium (Sandy) |
| Lacustrine Deposits |
| Organic Deposits |
| Pre WI Keweenawn Outwash |
| Pre WI Keweenawn Till |
| Pre WI Superior Outwash |
| Glacial Till (Pre -Late WI Superior) |
|
| Ice Contact Deposit (Superior) |
| Lacustrine Sand and Silt (Superior) |
| Outwash (Superior) |
| Till (Superior) |
| Glacial Till, Sand and Gravel (Superior) |
| Lowest River Warren Terraces |
| Middle River Warren Terrace |
| Upper River Warren Terrace |
| Modern Lake |
| Slopewash Sand (Wisc.) |