Along the Upper Mississippi River between St. Louis, Missouri, and St. Paul, Minnesota are 29 locks and dams that divide the river into 29 flat pools designed to hold water back to maintain a nine-foot deep shipping channel. At 16 locks and dams along the Mississippi and Illinois Rivers, lock personnel take counts of the birds on a weekly basis. The lock chamber consists of four miter gates (two at each end of the chamber), and four valves (two at each end). 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. (Show the Mississippi River on a map of the central US states.) The locks and dam located here are part of a much larger system of 29 locks and dams on the Upper Mississippi River. The Corps operates the locks and dams on the Mississippi River for navigation, not flood control. On the Lower Mississippi, the river does not need locks and dams because, with the addition of the Missouri, Illinois, Arkansas, Ohio, and other rivers, it is naturally wide enough and deep enough for navigation. These dams were constructed to only aid navigation; they were not designed for flood control. series of locks and dams on the Mississippi River to maintain a navigational channel of at least nine feet in depth. Mississippi Watershed Management Organization Oct. … https://www.steamboats.org/traveller/lower-mississippi-river.html The slow drawdown was done so that the Army Corps of Engineers could inspect the upper and lower locks and dams at St. Anthony Falls. The story of the Mississippi River region comes alive as you travel the Great River Road. Along the byway, you’ll find more than 70 designated Great River Road Interpretive Centers and a number of scenic overlooks and locks and dams. To maintain its The Kaskaskia River, located in Central and Southern Illinois is a navigable inland waterway. If you’re interested in experiencing the Mississippi River, the Great River … For each pool, there is a primary control point, where a predetermined water elevation must be kept for navigation to continue. Then, those numbers are organized into this collaborative report, which can be used for research, recreation, and general knowledge. The locks are necessary at each of the dams to allow boats to navigate from one pool (the water backed up behind each dam) to the next. The construction of the Melvin Price Locks and Dam is explained and working models explain how the system of locks and dams make river traffic possible on the Upper Mississippi. Locking Process. and dam facilities are located on the Mississippi north of the Minnesota-Iowa border. The locks and dams create slack-water pools for navigation during periods of low- and moderate-level water. 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