During its early years, the Survey was a prime provider of digital elevation models and other essential cartographic information. Fortunately, many sources now exist for the distribution of essential mapping resources, and the Survey no longer maintains a data warehouse.

SELECTED DEM SOURCES

United States Geological Survey National Elevation Dataset (NED)
NationalCenters for Environmental Information
Digital Data Services
Natural Graphics


APPLICATIONS AND TOOLS FOR USING DIGITAL ELEVATION MODELS

Macintosh OS
Natural Scene Designer - an outstanding application
POV-Ray for Mac

Windows OS

Natural Scene Designer - an outstanding application
TruFlite
POV-Ray for Windows