Digital Raster Graphic:
Scanned 7.5" USGS Topographic Quadrangles
About the Data
A digital raster graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) topographic map. The scanned image includes all map collar information. The image inside the map neatline is georeferenced to the surface of the Earth. The DRG can be used to collect, review, and revise other digital data, especially digital line graphs (DLG). When the DRG is combined with other digital products, such as digital orthophoto quadrangles (DOQ) or digital elevation models (DEM), the resulting image provides additional visual information for the extraction and revision of base cartographic information.
UTM - NAD 27 - TIFF - Collars Intact State Plane - NAD 83 - TIFF - Collars Removed Albers - NAD 83 - TIFF - Collars Removed US Topo - The Next Generation of Topo Sheets US Topo -High-Resolution DRG Scans - 2012 US Topo -High-Resolution DRG Scans - 2015