Recently Added Maps

Recently Added Maps for Download

One 36" x 60" sheet; contains map, legends, descriptive text, and one figure.Recommended citation:  Luman, D. E., L. R. Smith, C.C. Goldsmith, 2002, Illinois Surface Topography, Illinois State Geological Survey, Champaign, IL, Illinois Map 11, scale 1:500,000. Updated: October 5, 2017
Illinois Surface Topography
A computer-generated map showing the elevation of the surface of the state. A 36" × 64" version of this map may be purchased by contacting the ISGS Information Office. Updated: October 5, 2017
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, 1 cross section, and 8 figures; report contains descriptive text and 4 figures. Updated: September 6, 2017
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column, 1 cross section, 6 figures, and descriptive text. Updated: September 6, 2017
Two 34" x 28" map sheets; sheet 1 contains map, legends, and 1 figures; sheet 2 includes descriptive stratigraphic column, 1 cross section, and 2 figures; report contains descriptive text and 5 figures.Recommended citation: Updated: September 6, 2017
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes 2 cross sections, 3 figures, and descriptive text. Updated: September 6, 2017
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes 3 cross sections, 3 figures, 1 table, and descriptive text. Updated: September 6, 2017
Two 34" x 28" map sheets; sheet 1 contains map and legends; sheet 2 includes 3 cross sections, 6 figures, 1 table, and descriptive text.Recommended citation: Updated: September 6, 2017
One 22" × 30" map sheet; includes map and legend. Note: this map is in draft status and has not yet completed review for official ISGS publication. Updated: August 15, 2017
Bedrock Geology of Harco Quadrangle
Two 36" × 30" map sheets and one 5-page report; sheet 1 contains map and legends; sheet 2 includes descriptive stratigraphic column and cross section; report contains descriptive text. Updated: July 28, 2017