/products/road___site_design/b/road_and_site_design_blog/posts/how-to-import-ned-topo-data-using-data-acquisition-with-videoHistorically, elevation data from the USGS has been distributed via DEM files. More recently, the primary elevation data product of the USGS has been The National Elevation Dataset (NED). The NED is a seamless dataset with the best available raster elevationen-USTelligent Community 12