Lock and Dam No. 12
| File:Mississippi River Lock and Dam number 12.jpg
Lock and Dam No. 12 on the Mississippi River. View is upriver to the north.
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| Location | Bellevue, Iowa / Hanover Township, Jo Daviess County, Illinois, USA |
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| Coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
| Construction began | 1934 |
| Opening date | May 13, 1939 |
| Operator(s) | United States Army Corps of Engineers |
| Dam and spillways | |
| Impounds | Upper Mississippi River |
| Length | 8,369 feet (2,550.9 m) |
| Reservoir | |
| Creates | Pool 12 |
| Total capacity | 92,000 acre·ft (0.113 km3) |
| Catchment area | 82,400 sq mi (213,000 km2) |
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Lock and Dam No. 12 Historic District
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| Location | 401 N. Riverview St., Bellevue, Iowa |
| Area | 101.7 acres (41.2 ha) |
| Built | 1939 |
| Architectural style | Other, lock and dam |
| MPS | Upper Mississippi River 9-Foot Navigation Project MPS |
| NRHP Reference # | 04000172[1] |
| Added to NRHP | March 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 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.[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.
See also
- Savanna Army Depot, adjoining the facility on the Illinois side.
References
External links
- USGS Pool 12
- Historic American Engineering Record (HAER) No. IA-24, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 12, Upper Mississippi River, Bellevue, Jackson County, IA", 23 photos, 15 data pages, 2 photo caption pages
| Locks and dams of the Upper Mississippi River | ||
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| Upstream: Lock and Dam No. 11 |
Downstream: Lock and Dam No. 13 |
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| Topics | |
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| Lists by state |
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| Lists by insular areas | |
| Lists by associated state | |
| Other areas | |
| Related | |
- Pages with broken file links
- 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 Iowa
- National Register of Historic Places in Jackson County, Iowa
- Dams on the National Register of Historic Places in Iowa
- Transportation in Jackson County, Iowa
- 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
