Lock and Dam No. 12

From Wikipedia, the free encyclopedia
Mississippi River Lock and Dam number 12.jpg
Lock and Dam No. 12 on the Mississippi River. View is upriver to the north.
LocationBellevue, Iowa / Hanover Township, Jo Daviess County, Illinois, USA
Coordinates42°15′41.08″N 90°25′12.47″W / 42.2614111°N 90.4201306°W / 42.2614111; -90.4201306Coordinates: 42°15′41.08″N 90°25′12.47″W / 42.2614111°N 90.4201306°W / 42.2614111; -90.4201306
Construction began1934
Opening dateMay 13, 1939
Operator(s)United States Army Corps of Engineers logo.svg U.S. Army Corps of Engineers, Rock Island District
Dam and spillways
ImpoundsUpper Mississippi River
Length8,369 feet (2,550.9 m)
Reservoir
CreatesPool 12
Total capacity92,000 acre⋅ft (0.113 km3)
Catchment area82,400 sq mi (213,000 km2)
Lock and Dam No. 12 Historic District
Lock and Dam No. 12 is located in Iowa
Lock and Dam No. 12
Location401 N. Riverview St.,
Bellevue, Iowa
Area101.7 acres (41.2 ha)
Built1939
ArchitectEdwin E. Abbot
Architectural stylelock and dam
MPSUpper Mississippi River 9-Foot Navigation Project MPS
NRHP reference No.04000172[1]
Added to NRHPMarch 10, 2004

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-foot (61.0 m) storage yard and continues toward the Illinois shore with a 2,750-foot (838.2 m) non-submersible dike, a 1,200-foot (365.8 m) submersible dike and a 3,130-foot (954.0 m) non-submersible dike. The non-submersible sections are separated from the submersible section with two 120-foot (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.[2] 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.

https://web.archive.org/web/20161226221158/http://www.mvr.usace.army.mil/Portals/48/docs/CC/FactSheets/MISS/UMR%20Locks%20%26%20Dams%20-%202016%20%28MVD%29.pdf

See also[]

References[]

  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
  2. ^ "Lock & Dam 12" (PDF). U.S. Army Corps of Engineers. Archived from the original (PDF) on January 6, 2014. Retrieved January 5, 2014.

External links[]

Retrieved from ""