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The system was renamed the McAlpine Locks and Dam in 1960 in honor of William McAlpine, who was the only civilian to have ever served as district engineer for the Corps of Louisville. At present, the normal pool elevation is 420 feet (130 m) above sea level and the drainage area above the dam is 91,170 square miles (236,000 km 2 ).
The program's purpose was to replace the system of outdated wicket dams and small locks. The new dams were non-navigable and made of concrete and steel. Each dam has two adjoining locks, one 600-foot by 110-foot chamber, and a 1,200-foot by 110-foot chamber to accommodate fifteen barges that can lock through in one maneuver. [2]
From its origin to Cincinnati, the average depth is approximately 15 feet (5 m). The largest immediate drop in water level is below the McAlpine Locks and Dam at the Falls of the Ohio at Louisville, Kentucky, where flood stage is reached when the water reaches 23 feet (7 m) on the lower gauge. However, the river's deepest point is 168 feet (51 ...
The Tainter gate is used in water control dams and locks worldwide. The Upper Mississippi River basin alone has 321 Tainter gates, and the Columbia River basin has 195. A Tainter gate is also used to divert the flow of water to San Fernando Power Plant on the Los Angeles Aqueduct. [1] Tainter gate at McAlpine Dam, Ohio River, Louisville, Kentucky
McAlpine Locks and Dam, named for William McAlpine, district engineer for the Corps of Louisville, Kentucky Topics referred to by the same term This disambiguation page lists articles about people with the same name.
The locks can be filled or emptied in around 8 minutes. The upper pool is normally at an elevation of 383.0 feet (116.7 m), mean sea level and the lower pool elevation is 358.0 feet (109.1 m), mean sea level. The lift (difference) between the two pool is 25 feet (7.6 m). 25 million US gallons (95,000 m 3) of water is required to operate the lock.
Locks 58-71 are composite locks. Because there was a scarcity of good building stone in the upper Potomac, they made those locks of rubble and undressed inferior stone. Since the stone was undressed, that made a rougher surface, so the interior of the lock had to be lined with wood so as not to damage the boats in the lock.
The boat enters the lock. 8–9. The boat enters the lock. 3. The lower gates are closed. 10. The upper gates are closed. 4–5. The lock is filled with water from upstream. 11–12. The lock is emptied by draining its water downstream. 6. The upper gates are opened. 13. The lower gates are opened. 7. The boat exits the lock. 14. The boat exits ...