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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. It is the most-used lock operated by the United States Army Corps of Engineers. [4] Lock and Dam No. 2 is located about 6.7 Miles up the Allegheny River from the Point in Downtown ...
The main lock is 1,200 feet (370 m) long and 110 feet (34 m) wide; the auxiliary is 600 feet (180 m) long and 110 feet (34 m) wide. The main lock has a vertical lift gate and a miter gate while the aux. lock has two miter gates. The dam is 1,160 feet (350 m) long with 9 tainter gates, each 110 feet (34 m) wide by 42 feet (13 m) high.
The Corps of Engineers, as it is known today, was established on 16 March 1802, when President Thomas Jefferson signed the Military Peace Establishment Act, whose aim was to "organize and establish a Corps of Engineers ... that the said Corps ... shall be stationed at West Point in the State of New York and shall constitute a military academy."
According to the US Army Corps of Engineers, the new dam and locks will reduce passage time to under one hour with the new system. [citation needed] Due to queuing at Lock and Dam Number 52 and Lock and Dam Number 53, it can take cargo traffic 15 to 20 hours each to transit the locks the Olmsted complex is intended to replace. [6]
Due to the escalating coal trade, the US Army Corps of Engineers began studying methods to produce a reliable navigation depth on the Ohio. The Corps launched an international study to analyze other navigation projects worldwide. They determined that building a system of locks and dams to form pools was the best solution to the problem.
The U.S. Army Corps of Engineers (USACE) began work on the dam in 1952 and completed it five years later. Slack water created by the dam submerged Celilo Falls , the economic and cultural hub of Native Americans in the region and the oldest continuously inhabited settlement in North America . [ 3 ]
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McNary Dam is part of the Columbia River Basin system of dams and is one of fourteen hydropower facilities belonging to the Federal Columbia River Power System (FCRPS). [6] Stats: Altitude: 344 feet (105 m) above sea level; Height: 183 feet (56 m) Length: 7,365 feet (2,245 m) Navigation lock: Single-lift; 86 feet (26 m) wide; 683 feet (208 m) long