Digital Terrain Data
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SRTM3 (~90m) - Global Coverage
SRTM30 (~900m) - Global Coverage
SRTM1 (~30m) - USA Coverage

All the above SRTM terrain file formats can be used directly into CALPUFF View Version 2.2 and ISC-AERMOD View Version 5.7 and above.

SRTM3 - Shuttle Radar Topography Mission
Global Coverage (~90m) Version 2

Resolution: ~90 m, 3 arc-sec
Coverage: Global
Projection: Geographic
Datum: WGS84
Vertical Units: Meter

Info
Quick Start
Documentation
Large Map

Click on the map or links below to select the files to download. The links are connected directly to the NASA site (courtesy of NASA/NGA/USGS).

Africa
Australia
Eurasia
Islands
North America
South America

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SRTM30 - Shuttle Radar Topography Mission
Global Coverage (~900m)

SRTM30 is considered an upgrade to the original GTOPO30 data sets.

Resolution: ~900 m, 30 arc-sec
Coverage: Global
Projection: Geographic
Datum: WGS84
Vertical Units: Meter

Info
Documentation

Click on the map below to download the data in zip format. The links below are connected directly to the NASA site (courtesy of NASA/NGA/USGS):

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SRTM1 - Shuttle Radar Topography Mission
U.S. Coverage (~30m) Version 2

Resolution: ~30 m, 1 arc-sec
Coverage: United States
Projection: Geographic
Datum: WGS84
Vertical Units: Meter

Info
Quick Start
Documentation

Click on the map or links below to select the files to download. The links are connected directly to the NASA site (courtesy of NASA/NGA/USGS).

Region 01
Region 02
Region 03
Region 04
Region 05
Region 06
Region 07

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