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NOAA Photo Library Image - cgs05420

Note establishing contour interval and mean high water of Potomac River as vertical datum for elevations.

Image ID: cgs05420, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Virginia, Maryland, Washington, D.C. Potomac River
Photo Date: 1881


Category: Coast and Geodetic Survey/Archive Topographic Survey/

• High Resolution Photo Available




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Last Updated: September 30, 2009