Did You Know?
Facts about Locks
- The Corps owned or operated 276 lock chambers at 230 sites in 2000, but only 195 sites with 236 chambers received funding.
- Many of the 230 lock sites serving navigation include multi-purpose dams. For example, 46 lock-associated dams currently produce hydropower.
- In year 2001, 51% of all lock chambers, or 142 chambers, will have exceeded their 50-year design lives.
- The oldest operating locks in the U. S. are Kentucky River locks 1 and 2, built in 1839.
- The Corps lifts over 1.2 miles: The combined lift of all lock chambers owned and/or operated by the U.S. Army Corps of Engineers is 6,466 feet.
- Oregon's John Day Lock has the highest lift of any U.S. lock at 110 feet. This compares to the collective 404 foot lift of all 29 locks on the upper Mississippi River.
- The nation's busiest lock is in Illinois, the Ohio River Lock 52 which moved 95 million tons in 2000.
- Two lock sites serving the greatest number of pleasure craft in 2000 were: Hiram M. Chittenden Locks, Seattle, WA which passed 48,938 vessels through two chambers; and Chicago Lock, Chicago, IL which moved 38,717 vessels through one chamber.
- Domestic vessel operating companies operating vessels on U.S. waterways increased 0.5% from 1999 to 2000 from 2,572 to 2,585 companies.
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U.S. Army Corps of Engineers | Navigation Data Center | 7701 Telegraph Rd, Casey Bldg. | Alexandria, VA 22315 | Voice:(703) 428-9061 | Fax:(703) 428-6047