Upper Midwest Environmental Sciences Center

Digital Orthophoto Quadrangles (DOQ)
Maps, Quadrangles, and Figures

Digital Orthophoto Quadrangles (DOQ)

Scanned and geometrically rectified images of aerial photographs

Background Information

In 1998 the Upper Midwest Environmental Sciences Center (UMESC) began aquiring digital orthophoto quadrangles (DOQ) for the Upper Mississippi River floodplain to georeference the center's aerial photography and land cover/use data. As these data become available, the files are compressed and placed online so others can also use them.

All files are distributed as compressed images as the original DOQ files are approximately approximately 40-45 megabytes in size. A free image viewer capable of subsetting, resampling, and exporting the compressed images to georeferenced TIFF images (a .tif image and a .tfw world file) is available. If you require these data in their original format, contact the EROS Data Center. The following states also serve DOQ data files; Illinois, Iowa, and Minnesota.

    DOQs Alton Peoria Lockport Brandon Marseilles Starved Rock La Grange Open River Open River Pool 26 Pool 24 Pool 22 Pool 21 Pool 20 Pool 19 Pool 25 Pool 18 Pool 17 Pool 16 Pool 15 Pool 11 Pool 14 Pool 13 Pool 12 Pool 10 Pool 9 Pool 8 Pool 7 Pool 5 Pool 4 Pool 6 Pool 5a Pool 3 Pool 2 Pool 1

Mississippi River

Illinois River

Page Last Modified: April 3, 2018