Quadrangle Maps

Beecher West, Steger Data Points 2001 Steeger Data Points Map
Dyer, Steger Surficial Geology 1939 Dyer SG map
Stolletown Surficial Geology 2015 Stolletown Quadrangle map image
Stonefort Surficial Geology 1992 Stonefort Surficial Map
Stonefort Geology 1990 Stonefort Geology Map
Streamwood Surficial Geology 2007 Streamwood Surficial Map
Streator North Surficial Geology 2007 Streator North EDMAP
Streator South Surficial Geology 2009 Streator Sourth EDMAP
Sugar Grove Surficial Geology 2002 Sugar Grove Surficial Map
Sugar Grove Bedrock Topography 2002 Sugar Grove Bedrock Map

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Purchase this map online through Shop ISGS*, or contact the Sales and Information Office for more information.

*excludes EDMAP series and student maps