The Morganza Spillway, between the Mississippi River and the Atchafalaya Basin, shown while open in 1973. Water flows from the Mississippi (upper right) into the Morganza Floodway (lower left).
The Morganza Spillway or Morganza Control Structure is a flood-control structure in the U.S. state of Louisiana. It is located along the western bank of the Lower Mississippi River at river mile 280, near Morganza in Pointe Coupee Parish. The spillway stands between the Mississippi and the Morganza Floodway, which leads to the Atchafalaya Basin and the Atchafalaya River in south-central Louisiana. Its purpose is to divert water from the Mississippi River during major flood events by flooding the Atchafalaya Basin, including the Atchafalaya River and the Atchafalaya Swamp. The spillway and adjacent levees also help prevent the Mississippi from changing its present course through the major port cities of Baton Rouge and New Orleans to a new course down the Atchafalaya River to the Gulf of Mexico. The Morganza Spillway, operated by the U.S. Army Corps of Engineers, was opened during the 1973 and 2011 Mississippi River floods.[1][2][3][4][5]
^"Morganza Floodway". US Army Corps of Engineers. Archived from the original on January 11, 2012. Retrieved 2011-05-08.
^"Louisiana OLD RIVER CONTROL STRUCTURE and Mississippi river flood protection". America's Wetland Resource Center. Loyola University's Center for Environmental Communication (LUCEC).
^Weeks, John A. "Morganza Floodway". Retrieved 2011-05-08.
^"Will the Mississippi River change its course in 2011 to the red line?". Mappingsupport. Retrieved 2011-05-08.
^Matt Scallan (March 16, 2008). "Corps does dry run for river flooding. Drill gets agencies to work together". The Times-Picayune. p. 1.
The MorganzaSpillway or Morganza Control Structure is a flood-control structure in the U.S. state of Louisiana. It is located along the western bank...
Mississippi federal disaster areas. For the first time in 37 years, the MorganzaSpillway was opened on May 14, deliberately flooding 4,600 square miles (12...
Morganza may refer to: Morganza, Louisiana, incorporated village Morganza, Maryland, unincorporated community MorganzaSpillway, flood-control structure...
Engineers opened the MorganzaSpillway to 1/4 of its capacity to allow 150,000 cubic feet per second (4,200 m3/s) of water to flood the Morganza and Atchafalaya...
extreme flooding, the US Army Corps of Engineers may open the MorganzaSpillway and other spillways to relieve pressure on levees and control structures along...
Company. Retrieved 2 June 2019. Masters, Jeff. "Mississippi River's MorganzaSpillway Expected to Open For 3rd Time in History". Category 6. The Weather...
River Control Structure. The model was used to show that the untested MorganzaSpillway could be opened effectively, without diverting polluted water through...
the Great Mississippi Flood of 1927. Both the Bonnet Carre Spillway and the MorganzaSpillway were employed. The Bonnet Carre was fully opened between April...
the Great Mississippi Flood of 1927. Both the Bonnet Carre Spillway and the MorganzaSpillway were employed. The Bonnet Carre was fully opened between April...
less than a month, surpassed only by the Great Flood of 1993. The MorganzaSpillway upriver from Baton Rouge, Louisiana, will be opened on June 2 for...
near Red River Landing, Louisiana. In times of extreme flooding, the MorganzaSpillway further downstream is also used to regulate volume. In 1942 part of...
Maintenance of the integrity of the Old River Control Structure, the nearby MorganzaSpillway, and other levees in the area is essential to prevent such a diversion...
ranging from a few inches to twenty feet in coastal communities. The MorganzaSpillway provides a method of diverting water from the Mississippi River when...
2036, instead of the previously projected date of 2037. May 14 The MorganzaSpillway on the Mississippi River is opened for the second time in its history...
Florida. For the first time, the Army Corps of Engineers opens the MorganzaSpillway near Baton Rouge to relieve record flooding along the lower Mississippi...
games in Munich) and would continue after German reunification. The MorganzaSpillway on the Mississippi River, intended to protect the U.S. city of New...
Carré Spillway was delayed until 1935, necessitating a detour over the Jefferson Highway (River Road) via temporary gravel roads along the spillway guide...
and then heading west from New Roads to Morganza with LA 10 (still paralleling the Mississippi). From Morganza to Lettsworth, LA 1 heads northwest near...
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