Digital Raster Graphics (DRGs) are scanned images of U.S. Geological Survey (USGS) topographic maps. The scanned image includes all standard map collar information. The image inside the map neatline is georeferenced to the surface of the earth. When the DRG is combined with other digital products, such as DOQQs, or DEMs, the resulting image provides additional visual information for the extraction and revision of base cartographic information. This map includes standard information as related to the earths surfaces.
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