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Product Description
Global 30 Arc-Second Elevation Data Set (GTOPO30) is a global raster Digital Elevation Model (DEM) with a horizontal grid spacing of 30 arc seconds (approximately 1 kilometer). GTOPO30 was derived from a variety of raster and vector sources. The data is expressed in geographic coordinates (latitude/longitude) and is referenced to the World Geodetic Survey (WGS) system of 1984 (WGS84). The files are available in generic binary (16-bit signed integer) format and are distributed on DVD and File Transfer Protocol (FTP).
Additional Information:
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Prices
GTOPO30 data has transfered from NASA to USGS (details).
*Complete GTOPO30 coverage will require 1 DVD.
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Search & Order
There are several options for searching and ordering GTOPO30 data, depending on media:
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