Lock and Dam No. 14th
| Lock and Dam No. 14th | |
|---|---|
|
|
| Basic data | |
| Places: |
Le Claire , Iowa Hampton , Illinois |
| Geographical coordinates: | 41 ° 34 ′ 21 ″ N , 90 ° 23 ′ 54 ″ W. |
| Construction time: | 1921–1924 (6ft project) 1935–1940 (9ft project) |
| Weir | |
| Type: |
Segment weir roller weir |
| Maximum storage height: | 2.70 m |
| Dam length (moving part): | 823 m |
| lock | |
| usable length (main chamber): | 182.9 m |
| usable width: | 33.5 m |
Lock and Dam No. 14 ( Lock and Barrier No. 14 ) is one of 29 barrages that allow navigation on the Upper Mississippi . The combined structure, erected between 1921 and 1940 by the United States Army Corps of Engineers , is located around six kilometers below Le Claire in Iowa . On the opposite left bank of the river is Hampton , Illinois . On March 10, 2004 the Lock and Dam No. 14 listed as a Historic District on the National Register of Historic Places .
Barrage
The barrage includes a stone dam on the Illinois side and a 409.3 m long adjustable part, which consists of a 13-part segment weir and four damming rollers .
In the first stage of expansion between 1921 and 1924, a water level of six feet (1.80 m) was reached. In a second stage, the water level was increased to nine feet (2.70 m). The purpose of the weir is not primarily to protect against flooding, but to damming the Mississippi for shipping.
lock
The lock consists of two chambers. The main chamber is 182.9 m long and 33.5 m wide. This means that large push convoys have to be decoupled. The uncoupled barges are pulled into the large lock chamber on ropes, while the push boat is locked through the second chamber.
Web links
Individual evidence
- ↑ Entry in the National Register Information System . National Park Service , accessed May 19, 2016
Web links
Coordinates: 41 ° 34 ′ 21 ″ N , 90 ° 23 ′ 54 ″ W.