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The Mississippi River [b] ... Another possible course change for the Mississippi River is a diversion into Lake Pontchartrain near New Orleans.
In 1876, the Mississippi River changed course to cut across De Soto Point, eventually isolating Vicksburg from the river, but the completion of the Yazoo Diversion Canal in 1903 restored Vicksburg's river access. Most of the canal site has since been destroyed by agriculture, but a small section survives.
During the Civil War, the Mississippi River began to change course. [53] A sand bar developed upstream and pushed the river west, [2] and Rodney's former shipping channel became a swamp. [53] After the river changed course, Rodney gradually went from a major port to a ghost town. [7]
As the river changed course, the natural flow of freshwater and sediment changed as well, resulting in periods of land building and land loss in different areas of the delta. This process by which the river changes course is known as avulsion , or delta-switching, and forms the variety of landscapes that make up the Mississippi River Delta.
Bayou Teche was the Mississippi River's main course when it developed a delta about 2,800 to 4,500 years ago. Through a natural process known as deltaic switching, the river's deposits of silt and sediment cause the Mississippi to change its course every thousand years or so.
From 1989 to 2009, there were 128 locations where the river changed course, causing land that had been on one side of the river to then occupy the opposite bank. Until the boundary is officially changed, there are 60 small exclaves of the state of Texas now lying on the southern side of the river, as well as 68 such exclaves of Mexico on the ...
It regulates the flow of water from the Mississippi into the Atchafalaya River, thereby preventing the Mississippi River from changing course. Completed in 1963, the complex was built by the U.S. Army Corps of Engineers in a side channel of the Mississippi known as "Old River", between the Mississippi's current channel and the Atchafalaya Basin ...
In 1876, the Mississippi River changed its course, shifting west several miles and leaving Vicksburg without a river front. In 1902, the U.S. Army Corps of Engineers diverted the Yazoo River into the old river bed, forming the Yazoo Diversion Canal. The modern-day port of Vicksburg is still located on this canal.