GTOPO30: Global 30 Arc-Second Elevation (USGS/GTOPO30)

GTOPO30 is a global digital elevation model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). The DEM was derived from several raster and vector sources of topographic information. Completed in late 1996, GTOPO30 was developed over a three-year period through a collaborative effort led by the U.S. Geological Survey’s Center for Earth Resources Observation and Science (EROS). The following organizations participated by contributing funding or source data: the National Aeronautics and Space Administration (NASA), the United Nations Environment Programme/Global Resource Information Database (UNEP/GRID), the U.S. Agency for International Development (USAID), the Instituto Nacional de Estadistica Geografica e Informatica (INEGI) of Mexico, the Geographical Survey Institute (GSI) of Japan, Manaaki Whenua Landcare Research of New Zealand, and the Scientific Committee on Antarctic Research (SCAR).

NameDescriptionGee UnitGSD (m)
elevationElevationMetersarc seconds


United States Geological Survey (producer, licensor)
Google Earth Engine (host)
STAC Version 0.6.0
Keywords dem, elevation, geophysical, gtopo30, nasa, topography, usgs
License proprietary
Temporal Extent 12/31/1995, 4:00:00 PM - 12/31/1995, 4:00:00 PM
Citation GTOPO30 DEM courtesy of the U.S. Geological Survey
Type image