The Hannibal Locks and Dam are a United States Army Corps of Engineers concrete locks and lift gate dam, located at river mile marker 126.4 on the

Ohio River The Ohio River is a long river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing southwesterly from western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illino ...

at Hannibal, Ohio, and New Martinsville, West Virginia. The locks and dam were built to replace the wicket-type locks and dams Number 12, 13 and 14. Construction on the locks were started in 1967 and completed in 1972. Construction on the dams were started in 1970 and completed in 1975. A 37.4 MW hydroelectric power plant is located on the left descending bank of the Ohio River at New Martinsville, West Virginia, abutted to the dam. The power plant is owned and operated by the City of New Martinsville. An observation tower, along with public-use areas, picnic shelters and restroom facilities are available to groups and individuals during daylight hours, seven days a week.

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Dams completed in 1975 Dams in Ohio Dams on the Ohio River Buildings and structures in Monroe County, Ohio Buildings and structures in Wetzel County, West Virginia Transportation in Wetzel County, West Virginia Tourist attractions in Wetzel County, West Virginia Transportation in Monroe County, Ohio Tourist attractions in Monroe County, Ohio United States Army Corps of Engineers dams Locks of West Virginia Locks of Ohio 1975 establishments in Ohio 1975 establishments in West Virginia {{MonroeCountyOH-geo-stub

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