Lock and Dam No. 11

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Lock and Dam No. 11
Lock and Dam 11.jpg
Lock and Dam #11 as seen from Eagle Point Park in Dubuque, Iowa
Official name General Zebulon Pike Lock and Dam No. 11
Location Dubuque, Iowa / Jamestown, Grant County, Wisconsin
Coordinates Coordinates: 42°32′25″N 90°38′39″W / 42.540278°N 90.644167°W / 42.540278; -90.644167
Construction began 1934
Opening date 14 September 1937
Operator(s) United States Army Corps of Engineers
Dam and spillways
Impounds Upper Mississippi River
Length 1,478 ft (450 m)
Creates Pool 11
Total capacity 170,000 acre·ft (0.21 km3)
Catchment area 81,600 sq mi (211,000 km2)
Lock and Dam No. 11 Historic District
Location 11 Lime St., Dubuque, Iowa
Area 114.2 acres (46.22 ha)
Built 1937
Architect Abbott, Edwin E.; multiple
Architectural style lock and dam
MPS Upper Mississippi River 9-Foot Navigation Project MPS
NRHP Reference # 04000171[1]
Added to NRHP March 10, 2004

General Zebulon Pike Lock and Dam No. 11 is a lock and dam located between Dubuque, Iowa and rural Grant County, Wisconsin, on the Upper Mississippi River. It was opened to navigation 14 September 1937. The movable portion of the dam is 1,478 feet (450.5 m) long and consists of 13 tainter gates and three roller gates. The non-movable part is a 3,340 feet (1,018.0 m) long non-overflow earthen dam that connects to the Wisconsin shore. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. There is also an incomplete auxiliary lock.[2]

The lock and dam are listed on the National Register of Historic Places.[1]

Aerial view of Lock and Dam No. 11. View is to the west, looking across to the Iowa side of the river.
An aerial view of the lock and dam with Eagle Point Bridge, November 1940.

See also[edit]


  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13. 
  2. ^ "Lock & Dam 11". 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. 10
Lock and Dam No. 12