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Point Marion Lock and Dam

Coordinates: 39°43′38″N 79°54′39″W / 39.72722°N 79.91083°W / 39.72722; -79.91083
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Point Marion Lock and Dam
Looking downstream at Point Marion Lock and Dam.
LocationDunkard / Springhill townships, Greene County, near Point Marion, Pennsylvania
Coordinates39°43′38″N 79°54′39″W / 39.72722°N 79.91083°W / 39.72722; -79.91083
Construction began1923
Opening date1926
Operator(s)U.S. Army Corps of Engineers, Pittsburgh District
Dam and spillways
ImpoundsMonongahela River
Height15 ft (4.6 m)
Length638 ft (194 m)
Reservoir
Total capacity11,500 acre⋅ft (14,200,000 m3)
Catchment area2,751 sq mi (7,130 km2)
Surface area704 acres (285 ha)

Point Marion Lock and Dam, previously known as Lock and Dam Number 8, is one of nine navigational structures on the Monongahela River between Pittsburgh, Pennsylvania and Fairmont, West Virginia. Maintained and built by the U.S. Army Corps of Engineers, the gated dam forms an upstream pool that is 11.2 miles (18.0 km) long, stretching to the base of the Morgantown Lock and Dam. It is located at river mile 90.5 (river kilometer 145.6).

There is one lock chamber on the left descending bank of the river at the dam, 84 feet (26 m) wide and 720 feet (220 m) long. The reservoir formed by the dam is also a municipal and industrial water supply.[1]

Point Marion Lock and Dam Entrance, with the Fort Martin Power Station in the distance.

See also

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List of crossings of the Monongahela River

References

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  1. ^ "U.S. Army Corps of Engineers, Pittsburgh District- Point Marion Lock and Dam". Archived from the original on 1998-12-03. Retrieved 2009-03-02.