Power Plant and Dam No. 4 : Building the Dam Wikipedia, the free encyclopedia

Power Plant and Dam No. 4

United States historic place


Power Plant and Dam No. 4
U.S. National Register of Historic Places

Power Plant and Dam No. 4, September 1980
39°29′42″N 77°49′34″W / 39.49500°N 77.82611°W / 39.49500; -77.82611
Area	6 acres (2.4 ha)
Built	1910
MPS	Berkeley County MRA
NRHP reference No.	80004437 ^[1]
Added to NRHP	December 10, 1980

Power Plant and Dam No. 4 is a historic hydroelectric power generation station on the Potomac River, located near Shepherdstown on the county line between Berkeley and Jefferson County, West Virginia. The power plant is a tall one-story, limestone building on a high stone foundation. It is five bays long and has a gable roof. Dam 4 uses horizontal shaft turbines connected by rope drives to horizontal shaft generators. This plant is probably the last commercially operated rope-driven hydroelectric plant in the United States.^[2] The building is built into a hillside, so the main floor is the top floor. The power plant was originally built by the Martinsburg Electric Company.^[3]

It was listed on the National Register of Historic Places in 1980.^[1]

In 2013, the power plant was sold by FirstEnergy to Harbor Hydro Holdings LLC.^[4] The power plant has a rated capacity of 1.9 megawatts.^[5]

Building the Dam

The dam was originally built for the Chesapeake and Ohio Canal. On June 7, 1832, the contract was awarded to Joseph Hollman, and the work was completed in June 1835, at a cost of $50.803.15^[6] To avoid construction costs, the canal entered the slackwater above the dam, and continued in the slackwater for about 3 miles. This area was dubbed "Big Slackwater" by the canallers.

References

^ ^a ^b "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
^ "Library of Congress, Prints and Photographs On-line:Dam No. 4 Hydroelectric Plant, Potomac River, Martinsburg, Berkeley County, WV". Library of Congress.
^ Don C. Wood (n.d.). "National Register of Historic Places Inventory Nomination Form: Power Plant and Dam No. 4" (PDF). State of West Virginia, West Virginia Division of Culture and History, Historic Preservation. Retrieved 2011-06-02.
^ McVey, John (2013-11-02). "FirstEnergy hydroelectric stations sold". The Journal. Retrieved 2014-09-25.
^ "Dam No. 4 Hydro Station". Hydroworld.com. Retrieved 28 May 2018.
^ Unrau, p. 242

External links

Historic American Engineering Record (HAER) No. WV-27, "Dam No. 4 Hydroelectric Plant, Potomac River, Martinsburg vicinity, Berkeley County, WV", 63 photos, 6 measured drawings, 168 data pages, 6 photo caption pages

U.S. National Register of Historic Places in West Virginia

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