General Zebulon Pike Lock and Dam No. 11 is a lock and dam located between Dubuque, Iowa, and rural Grant County, Wisconsin, on the Upper Mississippi River.
| Lock and Dam No. 11 | |
|---|---|
 Lock and Dam No. 11 as seen from a drone. | |
| Official name | General Zebulon Pike Lock and Dam No. 11 |
| Location | Dubuque, Iowa / Jamestown, Grant County, Wisconsin |
| Coordinates | 42°32′25″N 90°38′39″W / 42.540278°N 90.644167°W |
| Construction began | 1934 |
| Opening date | 14 September 1937 |
| Operator(s) |  U.S. Army Corps of Engineers, Rock Island District |
| Dam and spillways | |
| Impounds | Upper Mississippi River |
| Length | 1,478 ft (450 m) |
| Reservoir | |
| Creates | Pool 11 |
| Total capacity | 170,000 acre⋅ft (0.21 km3) |
| Catchment area | 81,600 sq mi (211,000 km2) |
Lock and Dam No. 11 Historic District | |
   | |
| Location | 11 Lime Street, Dubuque, Iowa |
| Area | 114.2 acres (46.22 ha) |
| Built | 1937 |
| Architect | Abbott, Edwin E.; multiple |
| Architectural style | lock and dam |
| MPS | Upper Mississippi River 9-Foot Navigation Project MPS |
| NRHP reference No. | 04000171[1] |
| Added to NRHP | March 10, 2004 |
It was opened to navigation September 14, 1937.
Description
editThe movable portion of the dam is 1,478 feet (450.5 m) long and consists of 13 tainter gates and three roller gates. The non-movable part is a 3,340 feet (1,018.0 m) long non-overflow earthen dam that connects to the Wisconsin shore.
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]
The lock and dam are listed on the National Register of Historic Places.[1]
History
editConstruction the lock began in February 1934 while the dam was started to be built September 1935. They were completed August 1936 and May 1937 respectively. The system was put into operation on September 14, 1937.[3]
In December 2015, 200 coots died near the dam and O'Leary Lake.[4]
Gallery
edit- Lock and Dam No. 11
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Aerial view, with Eagle Point Bridge (1940)
See also
editReferences
edit- ^ a b "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
- ^ "Lock & Dam 11" (PDF). U.S. Army Corps of Engineers. Archived from the original (PDF) on January 6, 2014. Retrieved January 5, 2014.
- ^ "Lock and Dam 11 Mississippi River, Dubuque, Iowa" (PDF). United States Army Corps of Engineers. 2022. Retrieved May 26, 2024.
- ^ Reber, Craig D. (December 18, 2015). "Estimated 200 birds found dead near O'Leary's Lake". Telegraph Herald. Retrieved May 17, 2024.
External links
edit- Lock and Dam No. 11 - U.S. Army Corps of Engineers (Official site)
Media related to Mississippi River Lock and Dam number 11 at Wikimedia Commons- USGS.gov: Reach 1, Pool 11
- USACE Civil Works Digital Project Notebook
- Historic American Engineering Record (HAER) No. IA-23, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA", 50 photos, 16 data pages, 3 photo caption pages
