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GTOPO30 is a digital elevation model for the world, developed by United States Geological Survey (USGS). It has a 30-arc second resolution (approximately 1 km), [1] and is split into 33 tiles stored in the USGS DEM file format.


According to DTED and USGS DEM the absolute vertical accuracy of GTOP30 varies from ±30 meters.[2]

See also[edit]


  1. ^ USGS EROS Archive - Digital Elevation - Global 30 Arc-Second Elevation (GTOPO30)
  2. ^ "Accuracy". Retrieved July 26, 2017.

External links[edit]