Washington DC Boundary Stone - North
Posted by: Groundspeak Premium Member Ernmark
N 38° 59.760 W 077° 02.458
18S E 323251 N 4318314
Stone post which marks the northernmost point of the District of Columbia.
Waymark Code: WMN1WT
Location: District of Columbia, United States
Date Posted: 12/09/2014
Published By:Groundspeak Premium Member YoSam.
Views: 10

This stone is located just S of East-West RD - near the E end of a guard rail and at the edge of a wooded area. The stone is inside a low circular iron fence with a small plaque on the N side.

The plan to set up a 10-mile per side diamond-shaped plot of land for the United States Capital City was established in 1790, with surveying commencing the following year - beginning with the South Stone & moving clockwise from there.

Even with the SW portion of the 'diamond' returning to Virginia, most of the stones are still standing - and there have been several subsequent surveys of the stones.

For an interesting & more detailed history of the DC Boundary Stones please see the following link to a site dedicated to these stones - (visit link)

Additional information is also available on Wikipedia - (visit link)

Note - while there is a datasheet in the National Geodetic Survey database for this stone, it is currently non-published - (visit link)
Type of survey mark: notched stone

What indicators are near the mark to help people identify where it is located?:
Post is surrounded by a low iron fence placed by the Daughters of the American Revolution.


What property is this mark defining?:
This stone defines the northernmost point of a 10-mile by 10-mile square diamond that was set aside to become the National Capital City.


Visit Instructions:
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