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Is there a status graphic or shapefile showing the updated areas for NED 1 arc second and 1/3 arc second?

April 26, 2017ARC areas graphic NED shapefile Status updated

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Is there a status graphic or shapefile showing the updated areas for NED 1 arc second and 1/3 arc second?

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A. The Data Source Index map interface displays source resolution, production method of source, and date added to NED. Metadata and shapefiles of updates can be found at ftp://edcftp.cr.usgs.