DRG (Digital Raster Graphics)

This is an image of a DRG, which is a digital raster graphic. A digital raster graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) standard series topographic map, including all map collar information. The image inside the map neatline is georeferenced to the surface of the earth. The horizontal positional accuracy and datum of the DRG matches the accuracy and datum of the source map. The map is scanned at a minimum resolution of 250 dots per inch.

This map is a part of the Washington West, D.C. Digital Raster Graphic (DRG).