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 51 - 60 of 86
Map Images Title Description Theme Series County Publication Date Authors
Location of Data Points in Lee County Location of Data Points in Lee County, Illinois

1:62,500 Lee County map; 47" x 30" single map sheet; includes map, legend and descriptive text

 Data Points Open File Series (OFS) Lee 1999 Renee J. Nagy
Location of Data Points in McLean County Location of Data Points in McLean County, Illinois

1:100,000 McLean County area map; 40" x 29" single map sheet; includes map, legend, and descriptive text

 Data Points Open File Series (OFS) McLean 1997 Melisa M. McLean, Matthew H. Riggs
Locations of Data Points of Carroll County Locations of Data Points of Carroll County, Illinois

1:62,500 Carroll County map; 37" x 27" single map sheet; includes map, legend, descriptive text, and inset map

 Data Points Carroll 1997 Christopher S. McGarry
Major Quaternary Aquifers, Kane County Major Quaternary Aquifers, Kane County, Illinois

One 27" x 33" map sheet; includes map, legends and descriptive text

 Illinois County Geologic Map Series (ICGM) Kane 2007 William S. Dey, Alec M. Davis, B. Brandon Curry
Map Showing Location of Data Points, Jo Daviess County Map Showing Location of Data Points, Jo Daviess County, Illinois

1:62,500 Jo Daviess County map; 41" x 29" single map sheet; includes map, legend and descriptive text

 Data Points Open File Series (OFS) Jo Daviess 2000 Matthew H. Riggs, Christopher S. McGarry
Map Showing Thickness of Quaternary Deposits, Jo Daviess County Map Showing Thickness of Quaternary Deposits, Jo Daviess County, Illinois

1:62,500 Jo Daviess County map; 42" x 29" single map sheet; includes map, legend, and descriptive text

 Quaternary Deposits Open File Series (OFS) Jo Daviess 2000 Matthew H. Riggs, Christopher S. McGarry
Potential Dolomite Resources of Carroll County Potential Dolomite Resources of Carroll County, Illinois

1:62,500 Carroll County map; 37" x 27" single map sheet; includes map, legend, and descriptive text

 Mineral Resources Open File Series (OFS) Carroll 1997 Christopher S. McGarry, David A. Grimley
Quaternary Deposits in Lee County Quaternary Deposits in Lee County, Illinois

1:62,500 Lee County map; 47" x 30" single map sheet; includes map, legend, descriptive text and inset maps (2)

 Quaternary Deposits Open File Series (OFS) Lee 1999 Renee J. Nagy
Quaternary Deposits of Carroll County Quaternary Deposits of Carroll County, Illinois

1:62,500 Carroll County map; 46" x 27" single map sheet; includes map, legend, descriptive text, and inset map

 Quaternary DepositsSurficial Geology Open File Series (OFS) Carroll 1997 David A. Grimley
Resource Extraction and Landfill Activities of Tazewell County Resource Extraction and Landfill Activities of Tazewell County, Illinois

1:62,500 Tazewell County area map; 40" x 36" single map sheet; includes map, legend and inset map

 Extraction Operations Open File Series (OFS) Tazewell 2003 Patrick D. Johnstone