Information about USGS maps
glossary with USGS terms.
A description of the
1-degree USGS Digital Elevation maps.
A number of FTP sites (I have had trouble getting to most of these places through a browser; command-line ftp works fine):
that I wrote for AVS-importing of DEMs; the file
are the ones you should look at; if you find any bugs,
let me know!
The directory with the
free 1:250,000-scale DEM's.
The directory with all the indexes of
available GeoData by the USGS.
The directory with information about the
format of USGS data.
7.5 minute DEMs.