Lock and Dam No. 11
Dam in Iowa and Wisconsin, U.S.
From Wikipedia, the free encyclopedia
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. | |
 Interactive map of Lock and Dam No. 11 | |
| 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 |
| Construction began | 1934 |
| Opening date | 14 September 1937 |
| Operators |  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 mi2 (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
The 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
Construction 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] In March 2018, several barges got lose and hit the dam.[5]
Gallery
- Lock and Dam No. 11
Aerial view, with Eagle Point Bridge (1940)
View from atop nearby Eagle Point Park.
