What software imports the NED data?
The data is a raster dataset. Some known software that read NED are: ArcView (spatial analyst package), ArcGIS (spatial extensions), Arc/Info, ER Mapper, ERDAS, Microdem, Global Mapper, Rivertools, and more. We do not recommend one software over another. The best thing is to download a small area and try it to see which format best fits your software. These are just a few. You can run search online to see what software is able to import NED.