USGS elevation data available through The National Map was converted to Cloud Optimized Geotiff (COG - GeoTIFF) format in mid-December, 2019. This change was made to improve product processing time, storage, and to support new and evolving cloud processing capabilities.
GeoTIFF is a widely supported raster format and is directly useable by most commercial software that reads or processes Digital Elevation Model (DEM) data. GeoTIFF DEMs will fit seamlessly into most workflows.
Instructions and translator scripts for converting from GeoTIFF to FLT format (Gridfloat) and for converting GeoTIFF to IMG format can be found on the Raster Conversion page.
For additional questions, please send an email to our National Map Help Desk: email@example.com.
Learn more: USGS Digital Elevation Models (DEM) Switching to New Distribution Format.
The National Map—New data delivery homepage, advanced viewer, lidar visualization
The National Map seamless digital elevation model specifications
3D Elevation Program—Virtual USA in 3D
The National Map—New data delivery homepage, advanced viewer, lidar visualizationAs one of the cornerstones of the U.S. Geological Survey’s (USGS) National Geospatial Program, The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation. The National Map is featuring direct links to new and improved GIS data access utilities on a refreshed data delivery homepage at https://w
The National Map seamless digital elevation model specificationsThis specification documents the requirements and standards used to produce the seamless elevation layers for The National Map of the United States. Seamless elevation data are available for the conterminous United States, Hawaii, Alaska, and the U.S. territories, in three different resolutions—1/3-arc-second, 1-arc-second, and 2-arc-second. These specifications include requirements and standards
3D Elevation Program—Virtual USA in 3DThe U.S. Geological Survey (USGS) 3D Elevation Program (3DEP) uses a laser system called ‘lidar’ (light detection and ranging) to create a virtual reality map of the Nation that is very accurate. 3D maps have many uses with new uses being discovered all the time.