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Lock and Dam No. 9

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Opening date  July 1937
Opened  July 1937
Construction began  1936
Creates  Pool 9
Catchment area  172,519 km²
Impound  Upper Mississippi River
Lock and Dam No. 9 httpsuploadwikimediaorgwikipediacommonsthu
Location  Taylor Township, Allamakee County, Iowa / Seneca, Crawford County, Wisconsin, near Lynxville, Wisconsin, USA
Impounds  Upper Mississippi River
Total capacity  470,000 acre·ft (0.58 km)
Operator  United States Army Corps of Engineers
Similar  Lock and Dam No 10, Lock and Dam No 8, Lock and Dam No 6, Lock and Dam No 11, Lock and Dam No 13

2 bnsfs at lock and dam no 9

Lock and Dam No. 9 is a lock and dam located near Lynxville, Wisconsin and Harpers Ferry, Iowa on the Upper Mississippi River around river mile 647.9. The lower portion of Pool 9 was formally named Lake Winneshiek. The normal pool elevation behind the dam is 620 feet (189.0 m). It was constructed and placed in operation in July 1937. The site underwent a major rehabilitation from 1989 and 2006. The dam consists of concrete structure 811 feet (247.2 m) long with five roller gates and eight tainter gates. Earth embankment 9,800 feet (2,987.0 m) long with a grouted overflow spillway 1,350 feet (411.5 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. Lock and Dam No. 9 is located 12 miles upstream from Prairie du Chien, Wisconsin.


Map of Lock and Dam No. 9, Taylor, IA 52146, USA


Lock and Dam No. 9 Wikipedia

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