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 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.[1]

Hannibal Locks and Dam
Hannibal lock & dam.jpeg
Official nameHannibal Locks and Dam
LocationFlag of the United States.svg Hannibal, Ohio, / New Martinsville, West Virginia
Coordinates39°40′01″N 80°51′57″W / 39.667003°N 80.865905°W / 39.667003; -80.865905Coordinates: 39°40′01″N 80°51′57″W / 39.667003°N 80.865905°W / 39.667003; -80.865905
Construction began1967
Opening date1975
Operator(s)United States Army Corps of Engineers logo.svg United States Army Corps of Engineers Pittsburgh District
Dam and spillways
ImpoundsOhio River
Length1,403 feet (428 m)
Width (base)1,100 feet (340 m)
Power Station
Operator(s)City of New Martinsville
Installed capacity37.4 MW

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.[2]

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.[3]

Upstream:
Pike Island Locks and Dam
Downstream:
Willow Island Lock and Dam


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