Allegheny River Lock and Dam No. 8 is a historic

lock Lock(s) may refer to: Common meanings *Lock and key, a mechanical device used to secure items of importance *Lock (water navigation), a device for boats to transit between different levels of water, as in a canal Arts and entertainment * ''Lock ...

and

fixed-crest dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, tap water, human consumption, Industri ...

complex located at Boggs Township and Washington Township in

Armstrong County, Pennsylvania Armstrong County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 65,558. The county seat is Kittanning. The county was organized on March 12, 1800, from parts of Allegheny, Westmoreland and Lycomin ...

. It was built between 1929 and 1931 by the

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

, and consists of the lock, dam, esplanade, and Operations Building. The lock measures 56 feet by 360 feet, and has a lift of 17.8 feet. The dam measures approximately 50 feet high and 916 feet long; a three-foot addition was built on top of the dam in 1937. The Operations Building, or powerhouse, is a utilitarian two-story building in a vernacular early-20th century revival style. The lock and dam were built by the U.S. Army Corps of Engineers as a part of an extensive system of locks and dams to improve navigation along the

Allegheny River The Allegheny River ( ) is a long headwater stream of the Ohio River in western Pennsylvania and New York (state), New York. The Allegheny River runs from its headwaters just below the middle of Pennsylvania's northern border northwesterly into ...

. ''Note:'' This includes It was listed on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...

in 2000.

References

{{National Register of Historic Places in Pennsylvania Locks on the National Register of Historic Places in Pennsylvania Transport infrastructure completed in 1931 Dams in Pennsylvania United States Army Corps of Engineers dams Buildings and structures in Armstrong County, Pennsylvania Dams on the Allegheny River 1931 establishments in Pennsylvania National Register of Historic Places in Armstrong County, Pennsylvania Dams on the National Register of Historic Places in Pennsylvania Transportation buildings and structures in Armstrong County, Pennsylvania