Raster topographic maps series#

The horizontal positional accuracy and datum of the DRG matches the accuracy and datum of the source map.

The key elements in it are the road network, buildings and constructions, geographic names, waterways, land use and elevation. The USGS is starting to produce topographic map Digital Raster Graphics. Mosaic of digital raster Soviet topographic maps of Afghanistan electronic resource / by Peter G. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator projection. The Topographic map (raster) is a dataset depicting the terrain of all of Finland. Topographic Maps for the State of North Carolina This page provides information.

Raster topographic maps series#

What is a Digital Raster Graphic (DRG)?Ī digital raster graphic (DRG) is a scanned image of a USGS standard series topographic map, including all map collar information. Nebraska Maps and More, the SNR store, is pleased to serve as the outlet for Digital Raster Graphics, a revolutionary new map series recently completed for Nebraska. Copies of all Nebraska topographic maps are stocked and sold to the public. USGS is a primary source of geographic information system (GIS) data. ESIC serves as a clearinghouse for topographic, vegetation, soils and geological maps, historical and contemporary aerial photography and satellite imagery, soil surveys, National Wetlands Inventory data and many other types of digital cartographic data. Traditional definitions require a topographic map to show both natural and man-made features. The 1:24,000-scale DRG files for the Upper Mississippi River floodplain have been modified, their maps collars have been removed and a buffer strip of neighboring quadrangle data. Geological Survey (USGS) designating the School of Natural Resources (SNR) as the USGS Earth Science Information Center (ESIC) for the state of Nebraska. A topographic map is a type of map characterized by large-scale detail and quantitative representation of relief, usually using contour lines in modern mapping, but historically using a variety of methods. Digital raster graphic (DRG) files are being redistributed through this Web site as a service to program partners of the Upper Midwest Environmental Sciences Center. Since April, 1979,we have maintained a formal agreement with the U.S.