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Red River...changes to Atchafalay River?

Posted on 5/13/19 at 12:16 pm
Posted by ForLSU56
Rapides Parish
Member since Feb 2015
5582 posts
Posted on 5/13/19 at 12:16 pm
Was reading the post about the flooding putting pressure on the Old River Control structure.

Just curious. Anyone on here know why the Red River changes to the Atchafalaya River at that point. On a map it appears it's the same river...just changes names at ORCS.

Side note... read the book "The Rising Tide: The Great Mississippi River Flood of 1927". Really good read about the history of the river and what/how the decision was made to levee the river versus using other control methods.
This post was edited on 5/13/19 at 12:20 pm
Posted by CelticDog
Member since Apr 2015
42867 posts
Posted on 5/13/19 at 12:17 pm to
There's a detailed map in the existing thread.

Posted by BRgetthenet
Member since Oct 2011
118270 posts
Posted on 5/13/19 at 12:21 pm to
quote:

Side note... read the book "The Rising Tide: The Great Mississippi River Flood of 1927".




That’s a pretty thick book. How long did that take you?
Posted by ForLSU56
Rapides Parish
Member since Feb 2015
5582 posts
Posted on 5/13/19 at 12:24 pm to
Couple weeks. The chapter on when they blew the levee on purpose below New Orleans is very interesting...all due to political BS.

Posted by TigerstuckinMS
Member since Nov 2005
33687 posts
Posted on 5/13/19 at 12:27 pm to
quote:

Anyone on here know why the Red River changes to the Atchafalaya River at that point.


Posted by Bigfishchoupique
Member since Jul 2017
9664 posts
Posted on 5/13/19 at 12:57 pm to
Because you had three separate rivers before 1831, when Shreve cut the bends out as TigerstuckinMs illustrations show.
This post was edited on 5/13/19 at 12:59 pm
Posted by Tchefuncte Tiger
Bat'n Rudge
Member since Oct 2004
64011 posts
Posted on 5/13/19 at 1:19 pm to
There used to be no Atchafalaya River until the Mississippi River moved west at Turnbull's Bend and cut the Red River in two. The lower part became the Atchafalaya.

LINK

ETA: TigerstuckinMS beat me to it, but I wonder why the CoE didn't simply dam off Lower Old River and let the Mississippi and Red Rivers become two parallel rivers like they once were.


This post was edited on 5/13/19 at 1:28 pm
Posted by real turf fan
East Tennessee
Member since Dec 2016
12196 posts
Posted on 5/13/19 at 1:32 pm to
Use google satellite maps to look at the deltas of other rivers that have huge discharge. I don't know of any that are as controlled as the Mississippi. Most of them have multiple outlets that take off fairly far inland.

Right now, people up river who have built on flood plains are wondering why their property flooded. All the flood plains and all the people who never expected to see water covering them.

Jon Snow is not the only person who knows nothing.
Posted by Bigfishchoupique
Member since Jul 2017
9664 posts
Posted on 5/13/19 at 1:55 pm to
When Laplace flooded for Ivan? there was a twenty five year old housewife on the news fussing that she had never seen such flooding in her life. There were cypress trees in n the background. It’s been flooding there a long time.
Posted by ForLSU56
Rapides Parish
Member since Feb 2015
5582 posts
Posted on 5/13/19 at 2:23 pm to
Thanks all ... interesting the way the Mississippi has moved over the years.
Posted by ForLSU56
Rapides Parish
Member since Feb 2015
5582 posts
Posted on 5/13/19 at 2:25 pm to
quote:

I don't know of any that are as controlled as the Mississippi. Most of them have multiple outlets that take off fairly far inland.


The book I listed in the OP goes into this. Man can screw up some mother nature.
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