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Posts Tagged ‘Map of Mississippi River Basin’

Mississippi River breaks flood record at Natchez

Posted by feww on May 12, 2011

Mississippi River Tops 58.65 feet (17,88m) at Natchez

America’s largest river to crest at  64feet (19.51m) on May 21

Having broken the previous record of 58.04 ft set on February 21, 1937, America’s largest river is expected to crest at a whopping 64feet (19.51m; flow rate of 2,380kcfs ) on May 21.

Kcfs: Thousand cubic feet per second – multiply by 28,317 to get liters per second

Historical Crests
(1) 58.04 ft on 02/21/1937
(2) 57.03 ft on 04/24/2008
(3) 56.70 ft on 05/13/1973
(4) 56.60 ft on 05/04/1927
(5) 56.30 ft on 03/26/1997
(6) 55.70 ft on 05/31/1983
(7) 55.30 ft on 04/26/1922
(8) 55.20 ft on 04/29/1945
(9) 54.60 ft on 04/23/1979
(10) 54.50 ft on 06/05/1929


Map of Mississippi River Basin. Source: University of Missouri

The Mississippi River Flooding Impact

So far the flooding has :

  • Forced tens of thousands of people along the river and its tributaries to  evacuate
  • Inundated dozens of river towns
  • Swamped about 3.5 million acres of farmland (at least 3 million acres in three states of  Arkansas  Mississippi, Tennessee)
  • Put in need of shelter tens of thousands of farm animals
  • Threatens  New Orleans and Baton Rouge (Morganza Spillway in Louisiana may have to be opened to relive some of the pressure)
  • Threatens to swamp more than 3 million acres of farm and wetlands in Louisiana

The flooding has also shut down  16 casinos in  Mississippi  (a silver lining?) threatening to swamp another two in Vicksburg, according to Mississippi Gaming Commission, where the river is expected to crest at 57.5ft (flow rate: 2,340kcfs) on May 19.

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