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How many dams are on the mississippi river?

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The locks and dam located here are part of a much larger system of 29 locks and dams on the Upper Mississippi River. This series of locks and dams operated by the U.S. Army Corps of Engineers maintains a nine-foot channel on the Mississippi from St. Paul, MN to St. Louis, MO. Pleasure craft, towboats and barges all use this "stairway of water" to travel the river segments which were once too shallow to navigate. read more

The Mississippi River is about 2, 340 miles long. In the 1930's aseries of 29 dams and locks were installed on the river above St.Louis. read more

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