Lock and Dam No. 20

Lock and Dam No. 20

Mississippi River Lock and Dam number 20
Location Adams County, Illinois / Lewis County, Missouri,
near Canton, Missouri
Construction began 1932
Opening date November 20, 1935
Construction cost US$4.45 million
Dam and spillways
Length 2,369 feet (722.1 m)
Impounds Upper Mississippi River
Reservoir
Creates Pool 20
Lock and Dam No. 20 Historic District
Location: 0.5 mi. N of Henderson St., Canton, Missouri
Area: 83.9 acres (34.0 ha)
Built: 1935
Architect: COE; Abbott, Edwin E.
MPS: Upper Mississippi River 9-Foot Navigation Project MPS
NRHP Reference#: 04000180[1]
Added to NRHP: March 10, 2004

Lock and Dam No. 20 is a lock and dam located on the Upper Mississippi River, about one mile upstream from Canton, Missouri.

The structure is located at river mile 343.1. It includes a 2,369 feet (722.1 m) long dam, 40 tainter gates, 3 roller gates, and a lock chamber that is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. There is also an incomplete auxiliary lock. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 25 Historic District, #04000180 covering 839 acres (3.4 km2), 1 building, 6 structures, 3 objects.

References

  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13. http://nrhp.focus.nps.gov/natreg/docs/All_Data.html. 

External links

Locks and dams of the Upper Mississippi River
USAF • LSAF • 1 • 2 • 3 • 4 • 5 • 5A • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 24 • 25 • 26 • 27
Upstream:
Lock and Dam No. 19		 Downstream:
Lock and Dam No. 21