County mapping is carried out at the ISGS under a variety of programs. The programs exist for different purposes and require different levels of scientific review. Maps are published in specific Series based on the program under which they were created and the corresponding level of review.

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Displaying 21 - 30 of 86
Map Images Title Description Theme Series County Publication Date Authors
Bedrock Topography of St. Clair County, Illinois, map thumbnail, sheet 1 Bedrock Topography of St. Clair County, Illinois

One 39.5" x 35.5" map sheet contains map, legends, report, and 2 map figures.

 Bedrock Topography St. Clair 2022 David A. Grimley, Andrew C. Phillips
Bedrock Topography of Tazewell County Bedrock Topography of Tazewell County, Illinois

1:62,500 Tazewell County map; 40" x 36" single map sheet; includes map, legend, and inset maps (3)

 Bedrock Topography Open File Series (OFS) Tazewell 2003 Patrick D. Johnstone
Characterization of karst terrain and regional tectonics using remotely sensed data in Jo Daviess County, Illinois

One map sheet, accompanies Circular 589; contains map, legend, descriptive text, and 3 figures. Digital appendix at https://isgs.illinois.edu/publications/c589/appendix.

 Karst Terrain Jo Daviess 2015 Samuel V. Panno, Donald E. Luman, Dennis R. Kolata
Cumulative Sand and Gravel Thickness in McLean County Cumulative Sand and Gravel Thickness in McLean County, Illinois

1:100,000 McLean County area map; 40" x 30" single map sheet; includes map, legend, descriptive text, and inset maps (2)

 Cumulative Sand and Gravel Thickness Open File Series (OFS) McLean 1998 Matthew H. Riggs, Curtis C. Abert
Distribution of Surficial Eolian and Outwash Sand Deposits, Bureau County, Illinois

One 28.5" x 31" map sheet contains map, legends, and descriptive text.

 Surficial Geology Illinois County Geologic Map Series (ICGM) Bureau 2009 Xiaodong Miao
Distribution of Surficial Eolian and Outwash Sand Deposits, Lee County Distribution of Surficial Eolian and Outwash Sand Deposits, Lee County, Illinois

One 28.5" x 29" map sheet contains map, legends, and descriptive text

 Outwash Sand Deposits Illinois County Geologic Map Series (ICGM) Lee 2009 Xiadong Miao
Extraction Operations in McLean County Extraction Operations in McLean County, Illinois

1:100,000 McLean County area map; 40" x 26" single map sheet; includes map, legend, and descriptive text

 Extraction Operations Open File Series (OFS) McLean 1997 Melisa M. McLean, Maureen D. Kelly, Matthew H. Riggs
Geologic Atlas of Cook County for Planning Purposes, Cook County Geologic Atlas of Cook County for Planning Purposes, Cook County, Illinois

37 pages, contains 15 maps

 Geologic Atlas Open File Series (OFS) Cook 2004 Hannes E. Leetaru, Michael L. Sargent, Dennis R. Kolata
Geologic Cross Sections, Kane County, Illinois

Two 27" x 33" map sheets; includes map, legends, and descriptive text

 Cross Sections Illinois County Geologic Map Series (ICGM) Kane 2007 William S. Dey, Alec M. Davis, B. Brandon Curry
Geology of Alexander County, Illinois, map thumbnail, sheet 1 Geology of Alexander County, Illinois, map thumbnail, sheet 2 Geology of Alexander County, Illinois

Two 40" x 40" map sheets; sheet 1 contains map, legends, 1 inset map, and 1 figure; sheet 2 includes 1 geologic column, legend, and 2 cross sections.

 Bedrock Geology Alexander 2022 Joseph A. Devera, Jeremy R. Breeden