Lock and Dam No. 4

Dam in Minnesota, United States.
44°19′32″N 91°55′13″W / 44.32556°N 91.92028°W / 44.32556; -91.92028Construction began1932; 92 years ago (1932)Opening dateMay 1935; 89 years ago (1935)Operator(s) U.S. Army Corps of Engineers, St. Paul DistrictDam and spillwaysImpoundsUpper Mississippi RiverLength1,367 feet (416.7 m) (movable portion)ReservoirCreatesPool 4Total capacity878,000 acre⋅ft (1.083 km3)Catchment area57,100 sq mi (148,000 km2)

Lock and Dam No. 4 is a lock and dam located near Alma, Wisconsin and Kellogg, Minnesota on the Upper Mississippi River around river mile 752.8. The lock and dam are owned and operated by the St. Paul District of the United States Army Corps of Engineers-Mississippi Valley Division.

History

Dam photographed from Wisconsin Highway 35

The lock and dam was constructed and placed in operation in May 1935. There were ten major injuries and three deaths recorded during construction of the facility. Its last major rehabilitation was from 1988 to 1994.

An old photograph dated September 1935 and captioned "Photograph of crowd onshore assembled for Alma, WI dam dedication."

See also

References


External links

Wikimedia Commons has media related to Mississippi River Lock and Dam number 4.
  • U.S. Army Corps of Engineers, St. Paul District: Lock and Dam 4
  • U.S. Army Corps of Engineers, St. Paul District: Lock and Dam 4 brochure
  • Historic American Engineering Record (HAER) No. WI-47, "Upper Mississippi River 9-Foot Channel, Lock & Dam No. 4, Alma, Buffalo County, WI", 118 photos, 12 data pages, 7 photo caption pages
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Upstream:
Lock and Dam No. 3 		Downstream:
Lock and Dam No. 5