Harman Patil (Editor)

Lock and Dam No. 12

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Opening date  May 13, 1939
Creates  Pool 12
Year built  1939
Construction began  1934
Length  8,369 feet (2,550.9 m)
Area  41 ha
Added to NRHP  10 March 2004
Impound  Upper Mississippi River
Lock and Dam No. 12 httpsuploadwikimediaorgwikipediacommonsthu
Location  Bellevue, Iowa / Hanover Township, Jo Daviess County, Illinois, USA
Impounds  Upper Mississippi River
Total capacity  92,000 acre¬∑ft (0.113 km)
Operator  United States Army Corps of Engineers

Bellevue iowa lock and dam no 12

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 849 feet (258.8 m) long, consisting of seven tainter gates and three roller gates. It connects to a 200 feet (61.0 m) foot storage yard and continues toward the Illinois shore with a 2,750 feet (838.2 m) non-submersible dike, a 1,200 feet (365.8 m) submersible dike and a 3,130 feet (954.0 m) non-submersible dike. The non-submersible sections are separated from the submersible section with two 120 feet (36.6 m) transitional dikes. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) 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 1,017 acres (4.1 km2), 1 building, 3 structures, and 4 objects.


Map of Lock and Dam No. 12, Hanover Township, IL 61041, USA


Lock and Dam No. 12 Wikipedia

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