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Lock and Dam No. 9 is an American 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.
HAER No. IL-27, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 15, Rock Island, Rock Island County, IL", 52 photos, 16 data pages, 4 photo caption pages; HAER No. IL-28, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, New Boston, Mercer County, IL", 78 photos, 14 data pages, 5 photo caption pages
This is a list of locks and dams of the Ohio River, which begins at the confluence of the Allegheny and Monongahela rivers at The Point in Pittsburgh, Pennsylvania and ends at the confluence of the Ohio River and the Mississippi River, in Cairo, Illinois. A map and diagram of U.S. Army Corps of Engineers operated locks and dams on the Ohio River.
Lake Winneshiek is the name given to that portion of Navigation Pool 9 impounded by Lock and Dam No. 9 between the dam to 4 miles south of the city of Lansing, Iowa on the Upper Mississippi River, near Ferryville, Wisconsin. [1] It encompasses about 6,000 acres (24 km 2) and is part of the Upper Mississippi River National Wildlife and Fish Refuge.
The Upper Mississippi River is the portion of the Mississippi River upstream of St. Louis, Missouri, United States, [1] a city at the confluence of its main tributary, the Missouri River. [ citation needed ] Historically, it may refer to the area above the Arkansas Post , above the confluence of Ohio River , or above Cape Girardeau .
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Map of Mississippi River Basin This page was last edited on 9 January 2025, at 20:29 (UTC). Text is available under the Creative Commons Attribution-ShareAlike ...
This facility offers visitors a view of the barges and boats locking through on the widest pool in the Upper Mississippi River. The movable portion of the dam is 1,066 feet (324.9 m) long and consists of ten tainter gates and three roller gates. The non-movable portion of the dam continues toward the Iowa shore with a 200 feet (61.0 m) storage ...