DEM/Basemap Data Sources

Here’s where to find Digital Elevation Model (DEM) and other base data online.

Topo Maps for Free (USA): A list from Natural Graphics
http://www.naturalgfx.com/free_topo_gis.htm

Duke Libraries GIS Portal
http://library.duke.eduhref=”http://library.duke.edu/research/subject/guides/gis/data.html#general”>
Links to GIS data of all types. Try Earth Explorer first for DEM data.

Earth Explorer (USGS)
http://earthexplorer.usgs.gov/
Create a login with USGS first.

SRTM Tile Grabber
dwtkns.com/srtm
Simple, cool interface for zipped GeoTiff DEMs.

Earth Resources Observation & Science (EROS)
http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/Elevation_Products

Center for Spatial Information Science & Systems (CSISS)
http://ws.csiss.gmu.edu/DEMExplorer/

National Elevation Dataset (NED)
No longer operational. See EarthExplorer website.

Geospatial Data Gateway (GDG)
Free w/login
http://datagateway.nrcs.usda.gov/GDGHome.aspx

CGIAR-CSI / Shuttle Radar Topography Mission (SRTM – 90m)
Free, worldwide coverage
http://srtm.csi.cgiar.org

Google Earth Library – SRTM KML Project (90m)
Free.
http://www.gelib.com/srtm-kml.htm

Global Land Survey Digital Elevation Model (GLSDEM)
Free. See the Download Data Guide on the site.
http://glcf.umiacs.umd.edu/data/glsdem/

Global Digital Elevation Model (GTOPO – 1km)
Free.
http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/gtopo30_info

Advanced Spaceborne Thermal Emission & Reflection Radiometer (ASTER-GDEM)
Free w/Login.
http://asterweb.jpl.nasa.gov/gdem-wist.asp

ASTER (25m DEM)
Free, limited coverage.
ftp://ftp.glcf.umiacs.umd.edu/glcf/ASTER/

ASTER Orthocoverage
Free samples.
http://www.orthocoverage.com/download

Système Pour l’Observation de la Terre (SPOT)
DEMs and imagery for purchase, some samples
http://www.astrium-geo.com/en/23-sample-imagery

GeoGratis
Canadian DEMs, data, and imagery.
http://geogratis.cgdi.gc.ca/geogratis/en/links.html

GeoBase
Canadian DEMs, data, and imagery for free
http://www.geobase.ca/geobase/en/index.html

DEM of Italy
Complete 10m DEM of Italy (TINITALY/01) by DIGITALIA and Tarquini et al. (2007).
Submit request for data.
http://tinitaly.pi.ingv.it/

Puget Sound and Regional Data
Geomorphological Research Group at University of Washington
David Montgomery/Harvey Greenberg
http://gis.ess.washington.edu/data

TanDEM-X Intermediate
German Aerospace Center (Microwaves and Radar Institute)
LINK

Comments are closed.