Upper Midwest Environmental Sciences Center
Carlyle Lake, Illinois
Digital Raster Graphics (DRG)
Digital raster graphic (DRG) files are scanned and rectified images of USGS quadrangles.
These data are being compressed and redistributed through this web site as a service for program partners of the Upper Midwest Environmental Sciences Center. If you require data for additional areas the help button accesses information on which files are available through this Web site. The USGS National Mapping Center in Rolla, Missouri also keeps a list of sites that distribute DRG files through the Internet. Copies of the data can also ordered from the official USGS distribution site, the EROS Data Center (for a duplication and distribution fee).
These data were created from USGS - National Mapping Division hydrology data. The data were modified to display tributaries of the Upper Mississippi River System (UMRS). If you require these data in their original format, contact the EROS Data Center.- UMRS Tributaries - 1:100,000-scale (375 KB)
Scanned USGS Topographic Maps (UMESC)
- Georeferenced Greyscale USGS Topographic Map - 1:100,000-scale (4.2 MB Unix) (4.1 MB PC)
Transportation (USGS-National Mapping Division)
USGS's 1:100,000-scale transportation data for the Upper Mississippi River floodplain are being redistributed through this web site as a service for program partners of the Upper Midwest Environmental Sciences Center. If you require these data as UNIX format files, data for additional areas, or want to make sure you have the most recent version of the data, contact the EROS Data Center. EROS makes these data available to download via the Internet.- Miscellaneous Transportation - 1:100,000-scale (18 KB)