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The latest floods that caused serious damage were in 2011, in parts of Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, and Louisiana.

The last major flooding disaster was in 1993, when the Mississippi and the Missouri Rivers were over their banks for several weeks, causing billions of dollars of damage. The flooding was at least equal to the Great Flood of 1927, after which major changes were made to the hydrology of the river valley.

There were also high river levels and some flooding along the lower Mississippi in the years 1937, 1945, 1950, 1973, 1975, 1979, 1983, 1997, and 2008. In 2011, both the Morganza and Bonnet Carre spillways were opened in Louisiana to reduce river levels at Baton Rouge and New Orleans respectively.

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11y ago

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