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 of Lock and Dam No. 4 in Wisconsin
|
|
| Location | Alma, Buffalo County, Wisconsin / Greenfield Township, Wabasha County, Minnesota, United States. |
| Coordinates | 44°19′32″N 91°55′13″W / 44.32556°N 91.92028°W |
| Construction began | 1932 |
| Opening date | May 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 an important structure on the Upper Mississippi River. It helps boats travel safely and manages water levels. This lock and dam is located near Alma, Wisconsin and Kellogg, Minnesota. It sits at about river mile 752.8 on the river.
The United States Army Corps of Engineers manages and operates this facility. Specifically, the St. Paul District of the Corps of Engineers is in charge.
Building History
Construction of Lock and Dam No. 4 began in 1932. It was a big project that took several years to complete. The facility officially started operating in May 1935. During its construction, some workers were injured.
After many years of use, the lock and dam needed repairs. A major update and repair project happened between 1988 and 1994. This work helped keep the facility in good condition for continued use.
