| Willow Island Lock and Dam | |
| Name Official: | Willow Island Lock and Dam |
| Dam Crosses: | Ohio River |
| Location: | Ohio/West Virginia border |
| Operator: | United States Army Corps of Engineers Huntington District |
| Dam Type: | Gated |
| Res Elevation: | 602 feet above sealevel |
| Dam Length: | 1,128 feet |
| Construction Began: | 1967 |
| Opening: | 1976 |
| Cost: | $76,520,800 |
| Coordinates: | 39.3593°N -81.3193°W |
Willow Island Lock and Dam is the 7th Lock and dam on the Ohio River, located 162 miles downstream of Pittsburgh. There are two locks, one for commercial barge traffic that's 1,200 feet long by 110 feet wide, and the auxiliary lock is 600 feet long by 110 feet wide.[1]