Friday links – June 22, 2012

Free topo maps from USGS – US Topo is the new generation of digital topographic maps from the U.S. Geological Survey (USGS). Arranged in the traditional 7.5-minute quadrangle format, digital US Topo maps look and feel like the traditional paper topographic maps for which the USGS is so well known.

US Topo maps are available free on the Web through the USGS Store. Each map quadrangle is constructed in PDF format with geospatial extensions (GeoPDF®) format from key layers of geographic data – orthoimagery, roads, geographic names, contours and hydrographic features – found in The National Map.


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