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U.S. National Geodetic Survey

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Closeup of a Geodetic Survey marker

National Geodetic Survey, formerly called the U.S. Coast and Geodetic Survey (U.S.C.G.S.), is a United States federal agency that defines and manages a national coordinate system. It measures the land and then draws maps. It also measures magnetic fields and tides. Congress started it in 1807 to draw maps of the coasts.[1] It helps transportation and communication; mapping and charting; and many science and engineering uses. Since 1970, it has been part of the National Oceanic and Atmospheric Administration (NOAA), of the United States Department of Commerce.[1]


  1. 1.0 1.1 "Coast and Geodetic Survey Heritage = NOAA Central Library". http://www.lib.noaa.gov/noaainfo/heritage/coastandgeodeticsurvey/index.html. Retrieved January 13, 2012. 

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