The datum is defined by the observed heights of mean sea level at the 26 tide gauges and by the set of elevations of all bench marks resulting from the adjustment. A total of 106,724 kilometers of leveling was involved, constituting 246 closed circuits and 25 circuits at sea level.
George Washingtonâs Mount Vernon is located roughly 15 miles south of Washington, D.C. and 8 miles south of Alexandria, Virginia on the banks of the Potomac River, at the southern end of the George Washington Memorial Parkway.
Other cities, towns, and suburbs near Mount Vernon, Maine: The center of each city listed is within 30 miles of Mount Vernon, ME. Scroll down the page to find a list of big cities if you're booking a flight between airports, or a list of smaller surrounding towns if you're doing a road trip.