Mississippi River Delta

Largest Delta

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U.S. Postal Commemorative, Jefferson National Expansion Memorial

St. Louis, Missouri

The Mississippi River Delta, where the mouth of the river meets the Gulf of Mexico, covers approximately 11,000 square miles, roughly a quarter of the state of Louisiana.  The delta gradually changes form as sediment deposited by the river builds up.

http://www.nps.gov/jela/delta-dynamics.htm

http://en.wikipedia.org/wiki/Mississippi_River_Delta

Wonders of America: Land of Superlatives Stamp Series@2005 United States Postal Service. All rights reserved. Used with Permission.

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Image courtesy of Jim Roberts, GVCC