Why is the Mississippi delta so flat?

Rather, the Mississippi Delta is part of an alluvial plain, created by regular flooding of the Mississippi and Yazoo rivers over thousands of years. The climate is humid subtropical, with short mild winters, and long, hot and wet summers. The land is flat and contains some of the most fertile soil in the world.



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It measures seventy miles across at its widest point and encloses an area about two hundred miles long that writer William Alexander Percy called “a badly drawn half oval.” The Delta is unusually flat, with elevation going from 205 feet above sea level below Memphis to 80 feet above at Vicksburg and averaging an ...

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The Delta forms the most important bird and waterfowl migration corridor on the continent and supports North America's largest wetland area and bottomland hardwood forest. The Delta's cultural traditions are as rich and diverse as its natural resources.

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Rather, the Mississippi Delta is part of an alluvial plain, created by regular flooding of the Mississippi and Yazoo rivers over thousands of years. The climate is humid subtropical, with short mild winters, and long, hot and wet summers. The land is flat and contains some of the most fertile soil in the world.

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The problem is the delta's wetlands were and still are built and sustained by sediment delivered by the river. Leveeing of the river cut the tie between the sediment-filled river and its delta, stopping the cycle of new wetland growth.

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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 Ganges-Brahmaputra delta is the world's largest delta, covering most of Bangladesh and the state of West Bengal (India). The size of the delta is a reflection of the enormous input of sediment being washed off the still-growing Himalayan mountains into the Ganges river basin.

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On average, the Mississippi River Delta loses one football field of land per hour and has shrunk by 5,000 square miles in the last 80 years. To understand more about why some parts of the delta are disappearing due to sea-level rise, a team of NASA scientists will begin collecting data this spring.

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Deltas, like the Mississippi River Birdsfoot Delta, are river-dominated ecosystems. A river-dominated delta is only partially influenced by tides and waves. In this instance, wave energy dissipates before connecting with the coastline.

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A delta is a wetland area that forms as river waters empty into a larger body of water. Often, deltas look triangular in shape and sometimes they're even described as looking like a fan.

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1925: Huff Daland Dusters, the predecessor of Delta, is founded in Macon, Ga., before moving to Monroe, La., a few months later. This was the first commercial agricultural flying company, and Huff Daland's 18 planes become the largest privately owned fleet in the world.

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