DEM Availability

Key Global Regional DEMs   Supported data formats.     Bathymetery

Scale Spacing Data series Coverage Provider Web Source Notes
Global 5' (~10 km) ETOPO5 Entire world, including ocean basins NOAA  

 

 

Get ETOPO1 and thin

  2' ETOPO2       Get ETOPO1 and thin.
  2' long (lat has Mercator factor) Smith & Sandwell Predicted topography Entire world, including ocean basins SIO/NOAA Scripps Ideal for regional base maps, especially for geologists
  1' ETOPO1     NGDC Entire data set, or custom grids
  30" SRTM-15 Plus,
SRTM-30_Plus: Merge of SRTM30, Smith & Sandwell, and IBCAO
Entire world, including ocean basins   Scripps Get the SRTM version files, with a data file and an ERS header.  Open with MICRODEM which will use GDAL.  You will probably have to edit the header to get the correct SW corner.
 30" (~1 km) GTOPO30 Entire world, land only USGS GTOPO30 Use GMTED2010 as better alternative.
   SRTM-30 Entire world, land only   SRTM-30 Use GMTED2010 as better alternative.
30", 15", and 7.5" Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) Entire world USGS GMTED  
Regional 3" (60-90 m) SRTM-3   JPL SRTM Entire world except for polar regions (broadly defined) 

National Map Viewer directions.

  2'' (40-60 m) USGS 100K United States USGS   Must order from USGS ($)
 1" (20-30 m) SRTM-1   JPL

National Map Viewer

 1" (20-30 m) 3DEP (formerly NED) United States USGS National Map Viewer
  1" EU DEM Europe, Turkey, parts of North Africa      
  1" ALOS Global Digital Surface Model "ALOS World 3D - 30m" (AW3D30)     JAXA download or Home page Free version of 5 m grid.
 1" ASTER GDEM World wide, complete coverage NASA/METI ASTER G-DEM ASTER G-DEM
 10 m     NOAA  
  1/3" 3DEP (formerly NED) United States USGS National Map Viewer National Map Viewer "Best" available data from USGS.  
  1/9" 3DEP (formerly NED) United States USGS National Map Viewer National Map Viewer "Best" available data from USGS.  Very limited coverage at this scale
  1/9" Continuously Updated Digital Elevation Model (CUDEM) - Ninth Arc-Second Resolution Bathymetric Coastal United States NOAA https://coast.noaa.gov/htdata/raster2/elevation/NCEI_ninth_Topobathy_2014_8483/ Tiles named for the NW corner
  1 m Coastal National Elevation Database (CONED) Coastal United States USGS https://topotools.cr.usgs.gov/topobathy_viewer/ Directions
Point (Lidar)            

Bathymetry (DEMs under water)

DEM resolution: the tradeoff between detail and file size, and help on selecting the DEM series to use.

Commercial DEMs


Last revision 12/31/2018