Lock and Dam No. 25th
| Lock and Dam No. 25th | |
|---|---|
|
|
| Basic data | |
| Places: |
Winfield , Missouri Batchtown , Illinois |
| Geographical coordinates: | 39 ° 0 ′ 17 ″ N , 90 ° 41 ′ 11 ″ W |
| Construction time: | 1935-39 |
| Weir | |
| Type: |
Segment weir roller weir |
| Maximum storage height: | 2.7 m |
| Dam length (moving part): | 395.0 m |
| lock | |
| usable length: | 182.9 m |
| usable width: | 33.5 m |
Lock and Dam No. 25 ( Lock and Barrier No. 25 ) is one of 29 barrages that allow navigation on the Upper Mississippi . Erected between 1935 and 1939 by the United States Army Corps of Engineers , the combined structure is located 2.7 miles east of Winfield in Lincoln County , Missouri . On the opposite left bank of the river is about four kilometers north of the town of Batchtown in Calhoun County , Illinois . In 2004 the Lock and Dam No. 25 Historic District included in the NRHP .
Barrage
The barrage includes a 782 m long stone dam on the Illinois side and a 395 m long adjustable part, which consists of a 14-part segment weir and three barrels .
The water level is 9 feet (2.70 m). The main purpose of the weir is to impound the Mississippi for shipping, not flood protection.
lock
The lock is 182.9 m long and 33.5 m wide.