New streaming service provides high-resolution elevation data for the United States
The 3D Elevation Program (3DEP) is a USGS-initiated effort to collect and process LiDAR data and to make it publicly available, along with its derived products. The 3DEP elevation data (DEM) as well as several supplementary raster layers are now available free of charge and without use restriction to users of Global Mapper version 20.0 and higher. The 3DEP service is comprised of data from many different sources with horizontal resolutions up to 1 meter.
As an illustration of the quality of the data, the following screenshots compare the 3DEP data on the left with the 10-meter National Elevation Dataset (NED) of the same coverage area.
If you are currently using version 20.0 of Global Mapper or newer, you will automatically have access to the 3DEP data within the Online Data Sources list. Navigate to the Terrain Data section and choose USGS 3DEP Elevation.
For more information on the current status of the 3DEP and plans for future acquisition, visit www.usgs.gov/core-science-systems/ngp/3dep