Lock and Dam No. 6

File:Mississippi River Lock and Dam number 6.jpg Mississippi River Lock and Dam number 6.
Location	Richmond Township, Winona County, Minnesota / Trempealeau, Wisconsin, USA
Coordinates
Construction began	1933
Opening date	June 1936
Operator(s)	United States Army Corps of Engineers
Dam and spillways
Impounds	Upper Mississippi River
Length	893 feet (272.2 m)(movable portion)
Reservoir
Creates	Pool 6
Total capacity	180,000 acre·ft (0.22 km3)
Catchment area	60,030 sq mi (155,500 km2)

Lock and Dam No. 6 is a lock and dam located near Trempealeau, Wisconsin on the Upper Mississippi River near river mile 714.1. It was constructed and placed in operation in June 1936. The last major rehabilitation was from 1989 to 1999. The dam consists of 893 feet (272.2 m) long concrete structure with five roller gates and 10 tainter gates. Its earth embankment is 2,600 feet (792.5 m)long and the concrete overflow spillway is 1,000 feet (304.8 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long.

view from downtown Trempealeau, Wisconsin

External links

• U.S. Army Corps of Engineers, St. Paul District: Lock and Dam 6
• U.S. Army Corps of Engineers, St. Paul District: Lock and Dam 6 brochure
• Survey number HAER WI-48 - Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau vicinity, Trempealeau County, WI