Point Marion Lock and Dam, previously known as Lock and Dam Number 8, is one of nine navigational structures on the

Monongahela River The Monongahela River ( , )—often referred to locally as the Mon ()—is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 river on the Allegheny Plateau in North Cen ...

between

Pittsburgh Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

and Fairmont,

West Virginia West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geographers classify West Virginia as part of the Southern United States while the Bur ...

. Maintained and built by the

U.S. Army Corps of Engineers , colors = , anniversaries = 16 June (Organization Day) , battles = , battles_label = Wars , website = , commander1 = ...

, the gated dam forms an upstream pool that is long, stretching to the base of the

Morgantown Lock and Dam Morgantown Lock and Dam is a navigational lock and a gated dam on the Monongahela River at Morgantown, West Virginia. It is part of a series of dams that canalizes the Monongahela to a depth of at least for its entire length from Fairmont, Wes ...

. It is located at

river mile A river mile is a measure of distance in miles along a river from its mouth. River mile numbers begin at zero and increase further upstream. The corresponding metric unit using kilometers is the river kilometer. They are analogous to vehicle road ...

90.5 (river kilometer 145.6). There is one lock chamber on the left descending bank of the river at the dam, wide and long. The reservoir formed by the dam is also a municipal and industrial water supply.

References

{{Crossings navbox , structure = Dams , place =

, bridge = Point Marion Lock and Dam , bridge signs = , upstream = Star City Bridge , upstream signs = , downstream =

Albert Gallatin Memorial Bridge The Albert Gallatin Memorial Bridge (also known as the Point Marion Bridge) was a cantilever truss bridge that carried vehicular traffic across the Monongahela River in the southwestern part of the U.S. state of Pennsylvania. Built in 1930 to repl ...

, downstream signs = Crossings of the Monongahela River United States Army Corps of Engineers, Pittsburgh District Dams in Pennsylvania Transportation buildings and structures in Greene County, Pennsylvania Transportation buildings and structures in Fayette County, Pennsylvania Buildings and structures in Greene County, Pennsylvania Buildings and structures in Fayette County, Pennsylvania United States Army Corps of Engineers dams Dams completed in 1926

See also

References