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US Topo map

Thursday, November 19th, 2015

US Topo Maps Reach Milestone

November 19, 2015 — With the release of new US Topo maps for Illinois and South Dakota, the USGS has completed the second, three-year cycle of revising and updating electronic US Topo quadrangles. This means that since late 2009, the USGS has published nearly every map in the conterminous U.S., twice.

Wednesday, October 28th, 2015

Getting Recognized for Volunteer Mapping Efforts

October 28, 2015 — Volunteers are being recognized and earning custom badges for making significant contributions to the U.S. Geological Survey’s ability to provide accurate and timely information to the public.  Using crowdsourcing techniques, the USGS project known as The National Map Corps (TNMCorps) encourages volunteer “citizen scientists” to collect manmade structure data such as