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terrain data

Terrain Data


United States
7.5min DEM
These Digital Elevation Model (DEM) data files are produced by the U.S. Geological Survey (USGS) as part of the National Mapping Program. Each 7.5-minute DEM is based on 30 by 30 meter data spacing with the Universal Transverse Mercator UTM projection.
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1 deg DEM
These Digital Elevation Model (DEM) data files are produced by the U.S. Geological Survey (USGS) and provide coverage in 1 by 1 degree blocks with approximately 90 by 90 meter resolution for all of the contiguous United States, Hawaii, and limited portions of Alaska.
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SRTM1
This data was collected during the Shuttle Radar Topography Mission (SRTM) and contains full coverage of the United States in 1 by 1 degree blocks with an approximate resolution of 30 by 30 meters.
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Global
SRTM3
This data was collected during the Shuttle Radar Topography Mission (SRTM) and contains global coverage from 56 degrees south latitude to 60 degrees north latitude in 1 by 1 degree blocks with an approximate resolution of 90 by 90 meters.
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SRTM30
This data was collected during the Shuttle Radar Topography Mission (SRTM) and contains global coverage from 56 degrees south latitude to 60 degrees north latitude with an approximate resolution of 900 by 900 meters.
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GTOPO30
GTOPO30 is a global Digital Elevation Model (DEM) produced by the U.S. Geological Survey (USGS) with a horizontal grid spacing of 30 arc seconds (approximately 900 meters). GTOPO30 was derived from several raster and vector sources of topographic information.
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