Information about USGS maps

Fabio Cozman

The USGS home page.
A 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):
- Software that I wrote for AVS-importing of DEMs; the file read1gegDEM.c and read75minDEM.c are the ones you should look at; if you find any bugs, please 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.
- Some free 7.5 minute DEMs.

Fabio Cozman[Send Mail?]