DC North Cornerstone (CA2160) - Washington, DC
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: WMMY91
Location: District of Columbia, United States
Date Posted: 11/22/2014
Published By:Groundspeak Premium Member NW_history_buff
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 NGS database for this stone, it is currently non-published - (visit link)
Condition: Mark found in good condition

Designation: - blank -

Benchmark Agency: U.S. Coast & Geodetic Survey

Monumentation type: Boundary Marker

County: District of Columbia

USGS 7.5' Topographic Quadrangle Name (optional): Washington West

Special category (optional): Not listed

Find type: Location information obtained from the USGS was used

Web address of this benchmark's datasheet (optional): [Web Link]

NGS PID: CA2160

Benchmark Agency (if other): Not listed

Monumentation type (if other): Not listed

Special Category (if other): Not listed

Local database's URL (optional): Not listed

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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