Lock and Dam 7 is located near Camp Nelson, Kentucky and was constructed from 1898 to 1900.(1) The dam supports a 17.5-mile long pool of water and is located 140 miles from the mouth of the Ohio River. Constructed originally of a timber crib structure, which consisted of an outside frame of timbers filled with dirt and rock with a lock built of stone masonry. Work from 1993 to 1995 removed the river guide wall, and downstream face voids were filled with a new concrete overlay with derrick stone being placed below the dam.
In 2001, a cutoff wall was placed inside the lock, rendering it inoperable.(1) Grout bags were placed along the far abutment to stop leakage in 2002.
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Sources
- “Lock and Dam 8.” Finance and Administration Cabinet. Commonwealth of Kentucky, 13 Mar. 2008. Web. 6 Mar. 2012. Article.