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.

[1] 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.

This Monroe County, Ohio state location article is a stub.