Lock and Dam No. 5A

44°05′06″N 91°40′25″W / 44.085119°N 91.673698°W / 44.085119; -91.673698Construction began1932; 92 years ago (1932)Opening dateJune 1936; 88 years ago (1936)Operator(s) U.S. Army Corps of Engineers, St. Paul DistrictDam and spillwaysImpoundsUpper Mississippi RiverLength682 feet (207.9 m)(movable portion)ReservoirCreatesPool 5ATotal capacity39,600 acre⋅ft (0.0488 km³)Catchment area59,105 sq mi (153,080 km²)

Lock and Dam No. 5A is a lock and dam located near Fountain City, Wisconsin and Goodview, Minnesota on the Upper Mississippi River around river mile 728.5.

Construction

It was constructed in 1932, placed in operation in 1936. Its last major rehabilitation was from 1989 through 2000.

Description

The dam consists of a concrete structure 682 feet (207.9 m) long with five roller gates and five tainter gates with an earth embankment 22,000 feet (6,705.6 m) long. Its concrete overflow spillway is 1,000 feet (304.8 m) long and its lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long.

Ownership

The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.

Gallery

See also

• Public Works Administration Dams list
• Upper Mississippi River National Wildlife and Fish Refuge

References

External links

• U.S. Army Corps of Engineers, St. Paul District: Lock and Dam 5A
• U.S. Army Corps of Engineers, St. Paul District: Lock and Dam 5A brochure
• Historic American Engineering Record (HAER) No. MN-23, "Upper Mississippi River 9-Foot Channel Project, Lock & Dam No. 5A, Winona, Winona County, MN", 103 photos, 10 data pages, 7 photo caption pages