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Home arrow News arrow Geospatial Data arrow Digital Line Graph (DLG) and Digital Elevation Model (DEM) Distribution Update     

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Digital Line Graph (DLG) and Digital Elevation Model (DEM) Distribution Update  E-mail
Written by USGS   
30 April 2005
Effective June 30, 2005 – Individual, tiled, Digital Line Graphs (DLG) data will only be accessible through a new Tiled Data Delivery System (TDDS).

The TDDS will be a component of the Seamless Data Distribution System (SDDS). The data would be downloadable through an http connection. The DLGs will still be available for purchase through EarthExplorer.

Individual, tiled, Digital Elevation Models (DEM) will not be offered through the new Tiled Data Delivery System (TDDS). The current official National Map elevation data, National Elevation Dataset (NED), incorporates the DEMs and offers the best available elevation product through Seamless Data Distribution System (SDDS). The DEMs will still be available for purchase through EarthExplorer.

Please email any questions or concerns to This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

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Last Updated ( 01 May 2005 )
 
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