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The Atchafalaya Basin system comprises three floodways. Two of these, the West Atchafalaya Floodway and the Morganza Floodway, are at the northern end.Together with the Atchafalaya River, these floodways are designed to pass flood waters into the third component, the Lower Atchafalaya Basin Floodway, which is 833,000 acres (3,370 km 2) in size and is bounded on the north by U.S. Route 190, on ...
Water diverted at Old River flows into the Atchafalaya Basin, first entering the Red River, then continuing down the Atchafalaya River to the Gulf of Mexico, bypassing Baton Rouge and New Orleans (see diagram). The Morganza Floodway, between the Mississippi and the Atchafalaya Basin nearby downstream, is normally closed. It can be opened in an ...
The Atchafalaya River is navigable and provides a significant industrial shipping channel for the state of Louisiana. It is the cultural heart of the Cajun Country.. The maintenance of the river as a navigable channel of the Mississippi River has been a significant project of the U.S. Army Corps of Engineers for more than a century.
The Atchafalaya Basin, or Atchafalaya Swamp (/ ə ˌ tʃ æ f ə ˈ l aɪ ə /; Louisiana French: Atchafalaya, [atʃafalaˈja]), is the largest wetland and swamp in the United States. Located in south central Louisiana , it is a combination of wetlands and river delta area where the Atchafalaya River and the Gulf of Mexico converge.
NOAA’s Weather Prediction Center has posted a Level 2 out of 4 flash flood risk for the central Gulf Coast on Monday, including New Orleans. Download The Free Fox Weather App
This diversion was deemed necessary to protect levees and prevent major flooding in Baton Rouge and New Orleans, with the tradeoff of exacerbating flooding in the Atchafalaya Basin, and will also reduce floodwater stress on the Old River Control Structure upstream. This was the first opening of the spillway since the 1973 flood. [7] [34] [35] [36]
The weather service in New Orleans said during a 9 p.m. briefing that water was entering homes and businesses across St. Charles Parish, getting close to that in St. John the Baptist Parish, and ...
Since Morganza never operated above 172,000 cu ft/s (4,900 m 3 /s), the flooding in the Atchafalaya Basin was considerably lower than had been anticipated during the initial estimates of 300,000 cu ft/s (8,500 m 3 /s). [39] By May 29, the Corps had also opened 330 of the 350 bays of the Bonnet Carré Spillway located near New Orleans. [40]
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