Regional Maps
Bedrock Topography of the Middle Illinois River Valley
Coal Trace Element Maps
Elevation of the Basal Sand of the Middle Illinois River Valley
Geologic Materials in the Vicinity of the Lower Wabash Valley Illinois, Indiana, and Kentucky
Infrastructure for Emergency Response Planning in the Vicinity of the Lower Wabash Valley Illinois, Indiana, and Kentucky
Surficial Geology of the Middle Illinois River Valley
Structural cross section of Paleozoic rocks in Illinois
Updated 02/20/2012 SLD