Samiksha Jaiswal (Editor)

Lock and Dam No. 21

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Opening date  July 23, 1938
Area  44 ha
Added to NRHP  10 March 2004
Impound  Upper Mississippi River
Creates  Pool 21
Year built  1938
Construction began  1933
Lock and Dam No. 21 httpsuploadwikimediaorgwikipediacommonsthu
Location  Melrose Township, Adams County, Illinois / Fabius Township, Marion County, Missouri, near Quincy, Illinois, USA
Impounds  Upper Mississippi River
Length  1,265 feet (385.6 m) (movable portion)
Total capacity  62,000 acre¬∑ft (0.076 km)
Operator  United States Army Corps of Engineers

Lock and Dam No. 21 is a lock and dam located at Quincy, Illinois on the Upper Mississippi River around river mile 324.9. The movable portion of the dam is 1,265 feet (385.6 m) long and consists of three roller gates and ten tainter gates. A 1,400 feet (426.7 m) long submersible dike continues to the Missouri shore. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long and 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. 21 Historic District, #04000181 covering 1,075 acres (4.4 km2), 1 building, 4 structures, 4 objects.

Map of Lock and Dam No. 21, Fabius Township, MO 63471, USA

Currently there is a study being conducted by the city of Quincy to convert Lock & Dam No. 21, 20, and 22 into being hydroelectric by 2016.

References

Lock and Dam No. 21 Wikipedia


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