Allegheny River Lock and Dam No. 5 is a historic lock and fixed-crest dam complex located at Gilpin Township and South Buffalo Township in Armstrong County, Pennsylvania. It was built between 1920 and 1927 by the United States Army Corps of Engineers, and consists of the lock, dam, esplanade, and Operations Building. The lock measures 56 feet by 360 feet, and has a lift of 11.6 feet. The dam measures approximately 22 feet high and 632 feet long. It is located about 30.4 Miles up 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 ...

from the Point in Downtown Pittsburgh. Also, it is a mere .2 Miles up the Allegheny from the mouth of the Kiskiminetas River.https://www.lrp.usace.army.mil/Portals/72/docs/navigation/AlleghenyRiverNavigationChart.pdf Upriver, Allegheny Pool No. 5 has an average water elevation of 757 feet above sea level and extends about 5.9 miles upriver to Allegheny River Lock and Dam No. 6. Downriver, Allegheny Pool No. 4 has an average water elevation of 745.4 feet above sea level and extends about 6.2 miles downriver to

Allegheny River Lock and Dam No. 4 The Allegheny River Lock and Dam No. 4 in Harrison Township, Allegheny County, Pennsylvania, is a lock that was built 1920-1927, and opened in 1927, 24.2 miles upstream from the mouth of the river in Pittsburgh. The lock and dam were built by the ...

. Thus Lock No. 5 lifts and lowers boats about 11.6 feet between the pools. The Operations Building, or powerhouse, is a utilitarian two-story building in a vernacular

Moderne Moderne may refer to: * Moderne architecture, styles of architecture popular from 1925–1940s * PWA Moderne, an architectural style in the U.S., 1933–1944 * Streamline Moderne Streamline Moderne is an international style of Art Deco archit ...

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

. ''Note:'' This includes It was listed on the National Register of Historic Places in 2000.

References

{{National Register of Historic Places in Pennsylvania Locks on the National Register of Historic Places in Pennsylvania Transport infrastructure completed in 1927 Dams in Pennsylvania United States Army Corps of Engineers dams Buildings and structures in Armstrong County, Pennsylvania Dams on the Allegheny River 1927 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