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:
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National Elevation Dataset (NED): seamless, national digital elevation data with 30m spatial resolution
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1/3 and 1/9 NED available for some areas (~10m and ~3.3m)
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Elevation data updated bi-monthly
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High-resolution Orthoimagery for many cities, including 2002 imagery for Chapel Hill, Raleigh, & Durham
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1992 and 2001 National Land Cover Data
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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.
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