USDI-NPS 38-847, Maryland - U.S. Benchmarks on Waymarking.com

USDI-NPS 38-847, MD, is a two-inch US Department of the Interior – National Park Service disk mounted in the western wall of Lock Number 20 in the Chesapeake and Ohio Canal National Historical Park (near the Great Falls of the Potomac), Potomac, Montgomery County, Maryland. The disk is in the top of the south (downstream) end of the west (river-side) stone wall, 2.5 feet east of the west edge of the wall, 2.33 feet north of the south edge of the wall, 0.83 feet south of the north edge of the wall, directly under a wood railing, and about three feet above the gravel path running north-south along the west side of the canal. To reach from Interstate Highway 495, take Exit 41 near the north end of the bridge over the Potomac River and go northwest on Clara Barton Parkway for about 1.7 miles until it merges with MacArthur Blvd. Continue northwesterly on MacArthur Blvd for about 2.25 miles to the Park entrance on the left (where MacArthur Blvd ends and Falls Road leads to the northeast). Go westerly on the park entrance road for about 1.25 miles through the fee area ranger’s entrance station to the parking area. From the southern end of the parking area, walk south for about 200 feet to Lock Number 20 on the west side of the white, two-story building that houses the Visitors’ Center and Museum. Cross the canal on the footbridge at Lock 20 and walk south along the west side of the canal for about 57 feet to the south end of the west wall of the lock and the disk on the left. First found on 07/07/2003; last visited on 11/29/2005. Recovery first logged at Geocaching datasheet for station C229=F, PID = JV2790.

Condition: Mark found in good condition Designation: USDI NPS 38-847 Benchmark Agency: U.S. Department of Interior - National Park Service Benchmark Agency (if other): U.S. Department of Interior - National Park Service Monumentation type: Disk (unspecified type) County: Montgomery County USGS 7.5' Topographic Quadrangle Name (optional): Falls Church, VA - Rockville, MD Special category (optional): Not listed Find type: Found by luck/skill/knowledge NGS PID: None Monumentation type (if other): Not listed Special Category (if other): Not listed Web address of this benchmark's datasheet (optional): Not listed Local database's URL (optional): Not listed

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Date Logged Log User Rating   06/05/2021 Ernmark visited it 10/20/2018 bluesnote visited it 06/03/2012 Searcher28 visited it 03/12/2011 Benchmark Blasterz visited it

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