What happened to Mississippi Delta?

Humans have upset the delicate balance of land gain and loss in the Mississippi River Delta. Dams, levees and channels along the Mississippi have prevented land-forming sediments from reaching the delta, and most of those that do are discharged deep into the Gulf of Mexico.



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For 7,000 years, the Mississippi River has snaked across southern Louisiana, depositing sediment from 31 states and 2 Canadian provinces across its delta. As sediment accumulated under water, plant communities began to develop, trapping more sediment and building land.

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The Delta was swampland, with rivers and streams flowing through it and the Mississippi River flooding each spring. Wetlands in the Delta offer extensive water resources and a natural river pathway to support an “avian superhighway” for countless migrating birds.

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The city area in New Orleans is between Lake Pontchartrain and the Mississippi River. This whole area is a delta area on the Mississippi River with the mouth located about 130 km southeast from there.

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The Ganges Brahmaputra Delta, also named Ganges Delta, Sunderban Delta or Bengal Delta is situated in Asia where the Ganges and Brahmaputra rivers discharge into the Bay of Bengal. It is, with a surface area of some 100.000 km2, the world's largest Delta.

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