DRG Maps
Illinois 7.5' DRGs
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Price: $55.00   (Compare @ $400)
CD-ROM DVD-ROM

Complete Set Features:
  • 1,071 high quality scanned reproductions of USGS 7.5' (1:24,000 scale) topographic maps known as Digital Raster Graphics (DRG).
  • Maps are in GeoTIFF format (.tif).
  • Maps include collars.
  • Georeferencing (.tfw) and metadata (.fgd) files for every map for use in any GIS software application.
  • Free Viewing software (details) (Upgrade to Global Mapper) and an index of all USGS 7.5' maps in MS Excel format.
  • Native Projection: UTM, Datum: NAD27 (CONUS).
  • Maps are on 10 CDs or 2 DVDs.
  • over 6 gigabytes of data divided into 27 one degree quads covering the whole state of Illinois and parts of bordering states.
  • Equivalent cost for comparible USGS paper maps would be over $6,400!
  • Great for recreational and business purposes and can be fully manipulated to meet your needs.
Click the map below for a full size example map.


Maps are organized in 1 degree quadrangles with a maximum of 64 maps in a complete quadrangle.