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Lock and Dam No. 15
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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 long and consists of nine non-submersible, non-overflow roller gates and two non-submersible overflow roller gates. It is unusual among the upper Mississippi River dams in that it has only roller gates, has different sizes and types of roller gates, it is not perpendicular to the flow of the river and is one of the few facilities that has a completed auxiliary lock. The main lock is wide by long and its auxiliary lock is wide by long.〔(【引用サイトリンク】url=http://www.mvr.usace.army.mil/Portals/48/docs/CC/FactSheets/Miss/LocksandDam15.pdf )〕 In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 15 Historic District, #04000175 covering , 2 buildings, 9 structures, and 1 object.
==See also==
* Government Bridge, passes near the locks.
* Rock Island Arsenal adjacent to the locks.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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