Lock and Dam No. 20

Infobox_Dam
dam_name=

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caption=Mississippi River Lock and Dam number 20
official_name=
crosses= Upper Mississippi River
reservoir=Pool 20
locale=Canton, Missouri
maint= United States Army Corps of Engineers
length= convert|2369|ft|m|1
height=
width=
began=1932
open=November 20, 1935
closed=
cost=US$4.45 million
reservoir_capacity=
reservoir_catchment=
reservoir_surface=
coordinates= coord|40|08|37|N|91|30|46|W|region:US_type:landmark
extra=

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 convert|2369|ft|m|1 long dam, 40 tainter gates, 3 roller gates, and a lock chamber that is convert|110|ft|m|1 wide by convert|600|ft|m|1 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 convert|839|acre|km2|1, 1 building, 6 structures, 3 objects.

External links

* [http://hdl.loc.gov/loc.pnp/hhh.mo1075 Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO]