Lock and Dam No. 12 is a lock and dam located on the Upper Mississippi River at Bellevue, Iowa, United States. The movable portion of the dam starts at the locks adjacent to the Iowa shore and is long, consisting of seven tainter gates and three roller gates. It connects to a storage yard and continues toward the Illinois shore with a non-submersible dike, a submersible dike and a non-submersible dike. The non-submersible sections are separated from the submersible section with two transitional dikes. The main lock is wide by long. There is also an incomplete auxiliary lock. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 12 Historic District, #04000172 covering , 1 building, 3 structures, and 4 objects.

See also

Savanna Army Depot, adjoining the facility on the Illinois side

Public Works Administration dams list

Upper Mississippi River National Wildlife and Fish Refuge

References

External links

Lock and Dam No. 12 - U.S. Army Corps of Engineers

USGS Pool 12

Transportation buildings and structures in Jackson County, Iowa

Buildings and structures in Jo Daviess County, Illinois

Mississippi River locks

Driftless Area

Historic American Engineering Record in Illinois

Historic American Engineering Record in Iowa

National Register of Historic Places in Jackson County, Iowa

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Transportation buildings and structures in Jo Daviess County, Illinois

Transport infrastructure completed in 1939

Roller dams

Gravity dams

Dams on the Mississippi River

Mississippi Valley Division

Historic districts on the National Register of Historic Places in Iowa

Bellevue, Iowa

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Historic districts in Jackson County, Iowa

Lock and Dam No. 12