Puneet Varma (Editor)

Lower Mississippi River

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Country  US
Length  1,600 km (990 mi)
River mouth  Gulf of Mexico
Lower Mississippi River eoimagesgsfcnasagovimagesimagerecords500005
Main source  Cairo, Illinois (confluence of Ohio River and Upper Mississippi River) 96 m (315 ft)

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The Lower Mississippi River is the portion of the Mississippi River downstream of Cairo, Illinois. From the confluence of the Ohio River and Upper Mississippi River at Cairo, the Lower flows just under 1600 kilometers (1000 mi) to the Gulf of Mexico. It is the most heavily travelled component of the Mississippi River System.


Lower Mississippi River Lower Mississippi River Cruise

Unlike on the upper rivers, there are no locks or dams on the Lower Mississippi. The river is, however, constrained by levees and dikes to control flooding and secure a navigation channel for barges. The Old River Control Structure, the Bonnet Carré Spillway, the Mississippi River – Gulf Outlet Canal and other man-made structures on the lower reaches of the river seek to manipulate the flow of water in the vicinity of New Orleans.

Lower Mississippi River Mississippi Valley Division gt Media gt Publications gt Our Mississippi

The political and engineering focus in the 20th century was to separate the Lower Mississippi River from its floodplain. Levees and channelization—along with substantial loss of bottomland forests to agriculture in the alluvial valley—have resulted in a loss of wildlife and fish habitat, decreased water quality, and an expansion of the hypoxic zone in the Gulf of Mexico. Agricultural runoff has resulted in increased turbidity, siltation, pollution from pesticides, toxicity to aquatic organisms, oxygen depletion and eutrophication.

Lower Mississippi River Upper Mississippi River vs Lower Mississippi River Cruises Cruise

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Lower Mississippi River Lower Mississippi River Economic Profile LMRCC

Channel depth of 9 feet is maintained by the Corps of Engineers from St. Louis, Missouri to Baton Rouge, Louisiana.

Lower Mississippi River Lower Mississippi River Resource Assessment LMRCC

On the lower Mississippi, from Baton Rouge to the Gulf, the navigation depth is 45 feet, allowing for container ships and cruise ships to dock at the Port of New Orleans and bulk cargo ships shorter than 150 foot air draft to fit under the Huey P. Long Bridge and traverse the Mississippi to Baton Rouge. There is a feasibility study to dredge this portion of the river to 50 feet to allow New Panamax ship depths.

Lower Mississippi River Lower Mississippi River steamboatsorg
Lower Mississippi River Lower Mississippi River Wikipedia


Lower Mississippi River Wikipedia

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