Resources Activity Stream About Order by Relevance Name Ascending Name Descending Last Modified Go 1 resource found Categories: Imagery + Basemaps Tags: topographic map Filter Results 1:100k Digital Raster Graphic - Collars Removed A digital raster graphic (DRG) is a scanned image of an U.S. Geological Survey (USGS) standard series topographic map, including all map collar information. The image inside the... JPEG HTML