ComputingEarth SciencesGeoinformaticsDigital Elevation ModelingGeomaticsTerrain AnalysisDigital Elevation ModelsDigital Terrain ModelingDigital Terrain ModelsTerrain MorphometryTerrain Surface ModelingTopographic ModelsDem Quality ControlElevation AccuracyElevation Data ModelingElevation Data ProcessingElevation ModelingElevation RepresentationRaster Terrain DataTopographic Data Management
The National Elevation Dataset (NED) is a new raster product assembled by the U.S. Geological Survey (USGS). The NED is designed to provide national elevation data in a seamless form with a consistent datum, elevation unit, and projection. Data corrections were made in the NED assembly process to minimize artifacts, permit edge matching, and fill sliver areas of missing data.