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Army Corps of Engineers Releases 2021 Lock, Dam 4 Navigation Stats
January 10, 2022
ST. PAUL, Minnesota, Jan. 10 -- The U.S. Army Corps of Engineers-St. Paul District issued the following news release:

The U.S. Army Corps of Engineers, St. Paul District, released its 2021 navigation statistics for the Upper Mississippi River today, Jan. 10.

During the 2021 season, Corps staff supported 1,636 commercial navigation lockages at Lock and Dam 4, near Alma, Wisconsin, which was above the 10-year average of 1,547 lockages. The 2021 lockages supported 7,880,69 . . .

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