Lock and Dam No. 4 facts for kids

Quick facts for kids Lock and Dam No. 4
Mississippi River Lock and Dam No. 4
Location	Alma, Buffalo County, Wisconsin / Greenfield Township, Wabasha County, Minnesota, United States.
Coordinates	44°19′32″N 91°55′13″W
Construction began	1932 (1932)
Opening date	May 1935 (1935)
Operator(s)	U.S. Army Corps of Engineers, St. Paul District
Dam and spillways
Impounds	Upper Mississippi River
Length	1,367 feet (416.7 m) (movable portion)
Reservoir
Creates	Pool 4
Total capacity	878,000 acre⋅ft (1.083 km3)
Catchment area	57,100 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."