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Geographic Information Systems (GIS) Services Frequently Asked Questions:

How do I download data from the USGS Seamless Data Distribution Center?

The USGS Seamless Data Distribution Website is an excellent source for spatial data. A few highlights of the data available from the site:
  • National Elevation Dataset (NED): seamless, national digital elevation data with 30m spatial resolution
  • 1/3 and 1/9 NED available for some areas (~10m and ~3.3m)
  • Elevation data updated bi-monthly
  • High-resolution Orthoimagery for many cities, including 2002 imagery for Chapel Hill, Raleigh, & Durham
  • 1992 and 2001 National Land Cover Data
  • DRGs (Digital Raster Graphics), Scanned USGS topo maps- listed under "Orthoimagery"

Watch the movie and see below for step-by-step instructions on using the USGS Seamless site.

Please Note: Flash player plugin is required to view this demo.

Return to Frequently Asked Questions | Visit our Main Page, GIS Services

For more GIS assistance,
Please contact Amanda C. Henley, GIS Librarian
amanda.henley@unc.edu
(919) 962-1151

 

E-mail Reference questions to e-mail reference service
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URL: http://www.lib.unc.edu/reference/gis/faq/usgs_seamless.html
This page was last updated Friday, January 09, 2009.