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Lock and Dam No. 15 is a lock and dam located on the Upper Mississippi River.It spans the river between Rock Island, Illinois and Davenport, Iowa.Lock and Dam 15 is the largest roller dam in the world, its dam is 1,203 feet (366.7 m) long and consists of nine 109 feet (33.2 m) non-submersible, non-overflow roller gates and two 109 feet (33.2 m) non-submersible overflow roller gates.
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
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The 46-foot (14 m) [2] Brown Bridge Dam [broken anchor], 56-foot (17 m) [3] Boardman Dam [broken anchor], and 34-foot (10 m) [4] Sabin Dam [broken anchor] were removed from the Boardman River in Michigan as part of the Boardman River Dams Ecosystem Restoration Project after their hydropower was decommissioned in 2005.
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The removal of four dams over the past year has opened up fascinating stretches of river, wild rapids and views of salmon. River guides explore transformed ‘New Klamath’ after historic dam removal
Active roller dams are made from large metal cylinders, which can be lifted out of the water using a system of powerful hydraulic rams or cables and motors. This type is also known as a roller gate. The largest of the active dams in the world is Locks and Dam 15, which spans the Mississippi River between Rock Island, Illinois, and Davenport, Iowa.
Work on the dam removal project began in June. The smallest dam, Copco No. 2, was torn down by crews using heavy machinery. The other three dams are set to be dismantled next year, starting with a ...