Lock and Dam No. 21, Lock and dam system in Melrose Township, Missouri.
Lock and Dam No. 21 spans across the water, featuring concrete structures and mechanical systems designed for controlling water levels and river traffic.
The United States Army Corps of Engineers constructed this infrastructure in the early 1900s to facilitate commercial navigation along the waterway system.
The lock and dam represents Missouri's engineering heritage, illustrating the state's commitment to developing water transportation infrastructure during industrial growth.
Located at coordinates 39.9061, -91.4322, the lock and dam stands at 143 meters elevation and maintains water levels for vessel passage.
The structure earned recognition on the National Register of Historic Places for its engineering design and role in regional water management.
Location: Melrose Township
Location: Marion County
Architects: United States Army Corps of Engineers
Elevation above the sea: 143 m
GPS coordinates: 39.90610,-91.43220
Latest update: March 6, 2025 05:30
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