Melvin Price Locks and Dam, River navigation system in Alton, Illinois, United States.
The Melvin Price Locks and Dam spans 1,160 feet across the Mississippi River, featuring two locks and nine tainter gates to control water flow.
Constructed between 1979 and 1994, this facility replaced the outdated Lock and Dam 26, marking a significant advancement in river navigation infrastructure.
The National Great Rivers Museum at the facility presents exhibits about Mississippi River communities, navigation systems, and environmental conservation.
The main lock measures 1,200 feet by 110 feet, enabling large commercial vessels to navigate through the Mississippi River system year-round.
At river mile 200.78, this engineering structure manages a reservoir capacity of 238,000 acre-feet and oversees a drainage area of 171,470 square miles.
Location: Illinois
Location: Missouri
Elevation above the sea: 123 m
GPS coordinates: 38.86920,-90.15360
Latest update: March 3, 2025 03:10
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