Illinois Digital Raster Graphics Files
1:250,000 DRGs 1:100,000 DRGs
1:24,000 DRGs Projection/Format
Illinois Natural Resouces Geospatial Data Clearinghouse

Download a DRG: Specify name or USGS index number

Currently, only one DRG can be downloaded at a time. Javascript must be enabled on your browser.

STEP 1. Select projection and format:
Learn more about projection and format choices.

Flavor 1 - Original USGS DRG in default UTM zone and datum
Flavor 2 - DRG reprojected to Lambert Conformal Conic, NAD27, collar intact
Flavor 3 - DRG reprojected to UTM Zone 16, NAD83, collar cropped (tiled)
Flavor 4 - DRG reprojected to Lambert Conformal Conic, NAD27, collar cropped (tiled)

STEP 2. Select scale and quadrangle:
Click a button to activate a scrolling list. Only the selection in the activated scrolling list will apply.

1:24,000 - Select by quad name:

 1:24,000 - Select by index number: