Land Boundary Information System
Mapping Data
Digital Elevation Model
Digital Elevation Model
You are about to enter an FTP site. The folders are organized by 7.5-minute quad name and in *.tar.gz compression format.
Enter FTP Site (30 meter resolution)
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About the Data
USGS 7.5-Minute SDTS DEM 30-Meter
A Digital Elevation Model (DEM) is a digital representation of the contours of the Earth's surface.
The information is derived from elevation measurements at regularly spaced intervals.
This data is published by the USGS and covers a 7.5-minute area with 30-meter resolution.
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Determining the Quad Name
Use the Quad Name Locator to find the name
of the quad(s) to download.
Downloading Instructions
From the web browser, left-click on the file name to open the file; right-click to download it to your machine.
If you experience downloading difficulties or need a large number of files, FTP software may be more beneficial
than using a web browser. See FTP Instructions for more information.
Special Software Needed
These files are in STDS format and must be converted to DEM before using.
STDS to DEM Conversion Program
WinZip will uncompress the .gz format
Additional software is needed to use the DEM
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