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![Note establishing contour interval and mean high water of Potomac River asvertical datum for elevations cgs05420.jpg Note establishing contour interval and mean high water of Potomac River asvertical datum for elevations](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_cgs05420.jpg?itok=VfR-dY7A)
Description
Note establishing contour interval and mean high water of Potomac River asvertical datum for elevations.
Display Date
1881
Location
Virginia, Maryland, Washington, D.C. Potomac River
Collection
Historic Coast & Geodetic Survey
Historic Maps
General
Keywords
Coast and Geodetic Survey
Archive Topographic Survey