Lock and Dam No. 15

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Mississippi River Lock and Dam number 15.jpg
Lock and Dam No. 15 on the Mississippi River. View is from the Illinois side of the river looking across to Davenport, Iowa.
LocationRock Island, Illinois / Davenport, Iowa
Coordinates41°31′07″N 90°34′08″W / 41.51861°N 90.56889°W / 41.51861; -90.56889Coordinates: 41°31′07″N 90°34′08″W / 41.51861°N 90.56889°W / 41.51861; -90.56889
Construction began1931
Opening dateMarch 7, 1934
Operator(s)United States Army Corps of Engineers logo.svg U.S. Army Corps of Engineers, Rock Island District
Dam and spillways
ImpoundsUpper Mississippi River
Length1,203 feet (366.7 m)
CreatesPool 15
Total capacity100,000 acre⋅ft (0.12 km3)
Catchment area88,500 sq mi (229,000 km2)
Lock and Dam No. 15 Historic District
Lock and Dam No. 15 is located in Illinois
Lock and Dam No. 15
Lock and Dam No. 15 is located in the United States
Lock and Dam No. 15
LocationNW of Rodman Ave., Twd., NW tip Arsenal Island, Rock Island, Illinois
Area359 acres (145 ha)
ArchitectU.S. Army Corps of Engineers; et al.
Architectural styleOther, Lock and Dam
MPSUpper Mississippi River 9-Foot Navigation Project MPS
NRHP reference #04000175[1]
Added to NRHPMarch 10, 2004

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. 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 110 feet (33.5 m) wide by 600 feet (180 m) long and its auxiliary lock is 110 feet (34 m) wide by 360 feet (110 m) long.[2] In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 15 Historic District, #04000175 covering 3,590 acres (1,450 ha), 2 buildings, 9 structures, and 1 object.

Lock and Dam No. 15 in 1934

See also[edit]


  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
  2. ^ "Locks & Dam 15" (PDF). U.S. Army Corps of Engineers. Retrieved January 5, 2014.

External links[edit]

Locks and dams of the Upper Mississippi River
Lock and Dam No. 14
Lock and Dam No. 16