Mississippi River Delta
The Mississippi River Delta is the modern area of land (the river delta) built up by alluvium deposited by the Mississippi River as it slows down and enters the Gulf of Mexico.
It is a biologically significant region, comprising 3 million acres (12,000 km²) of coastal wetlands and 40% of the salt marsh in the contiguous United States. It is also a commercially significant region, supporting the economy of New Orleans with significant shipping traffic, providing 16 to 18 % of the US oil supply, and providing 16 % of the US's fisheries harvest, including shrimp, crabs, and crayfish.
The Mississippi River Delta is not to be confused with the Mississippi Delta region, an alluvial plain located some 300 miles northward in western Mississippi along the River.