Quadrangle Maps
| Brownfield | Bedrock Geology | 2008 |
 |
| Brownfield | Surficial Geology | 1996 |
 |
| Brussels | Bedrock Geology | 2008 |
 |
| Brussels | Bedrock Topography |
|
|
| Cahokia | Sinkhole Density and Distribution | 2009 |
 |
| Cahokia | Bedrock Geology | 1999 |
|
| Cahokia | Surficial Geology | 1999 |
|
| Cairo | Geology | 2008 |
 |
| Calumet City | Surficial Geology | 2021 |
 |
| Calumet City | Surficial Geology | 1939 |
 |