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re: On the back side of Alligator Bayou...Parish ordered evacuation (Aug 15th)

Posted on 8/17/16 at 7:30 pm to
Posted by MNCscripper
St. George
Member since Jan 2004
11904 posts
Posted on 8/17/16 at 7:30 pm to
quote:

UC


Course needs some water, always hard as a rock
Posted by Gsatterw
Member since Aug 2016
43 posts
Posted on 8/17/16 at 7:38 pm to
quote:

I understand that
I'm trying to understand where the water will flow?
WAFB said they were sandbagging to cut off the flow into AB
Where will the rest of the back flow water go??



The flow that doesn't go into Spanish lake will add to the flooding that is coming from bayou manchac.
Posted by BamaFanInTigerland
Baton Rouge, LA
Member since Sep 2009
787 posts
Posted on 8/17/16 at 7:45 pm to
quote:

Alligator/Manchac was 12.62' @ 6p. (.24"/hr)
Bluff Swamp was 12.64'@ 6p. (.12"/hr)

Eighth drop at Bayou Fountain (14.97').

Manchac dropped another 1.5" (16.33').


Alligator/Manchac was 12.64' @ 7p. (.24"/hr)
Bluff Swamp was 12.66'@ 7p. (.24"/hr)

No change at Bayou Fountain (14.97').

Manchac dropped another 1.5" (16.2').
Posted by shawnlsu
Member since Nov 2011
23682 posts
Posted on 8/17/16 at 8:02 pm to
I'm an idiot.
Carry on
This post was edited on 8/17/16 at 8:19 pm
Posted by CidCock
Member since Sep 2007
Member since Feb 2011
8692 posts
Posted on 8/17/16 at 8:16 pm to
1.5" not 1.5'
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/17/16 at 8:35 pm to
The goal is to stop manchac from dumping into bluff swamp.

They don't completely dam off alligator bayou road with sheet piles because it would cause flooding in some high dollar places at times like this unless they put some very serous pumps in to put manchac into the Mississippi.
Posted by JohnnyBgood
South Louisiana
Member since May 2010
4457 posts
Posted on 8/17/16 at 8:40 pm to
quote:

it would cause flooding in some high dollar places at times like this unless they put some very serous pumps in to put manchac into the Mississippi.


I really think this is the most viable solution, however I know its not the most cost effective. That MS river right now could hold all this water with no problem.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/17/16 at 8:45 pm to
Sending it to the river is the right idea. That's where it wants to go right now. It's just very much not cheap to do, and you wouldn't need to do it often.

Engineers also don't like the idea because the way everything currently sits, they want the water going to lake Maurepas one way or another. Putting it in the river is 100% the opposite of what everything is set up to do. The whole goal is to keep the Mississippi levee and not need pumps to keep everyone dry. It takes some serious shite to make a difference.

I doubt the amount of water in all of bluff swamp and manchac would raise the river 1' in NOLA, but I'm no Corp of engineers engineer.
Posted by BayouBengals18
Fort Worth
Member since Jan 2009
9843 posts
Posted on 8/17/16 at 8:49 pm to
Yeah. It's only 10.6 at Donaldsonville, and is discharging at 442,000 cfs. The river could've easily handled this, and we wouldn't have even noticed down here.
This post was edited on 8/17/16 at 8:51 pm
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/17/16 at 8:53 pm to
Emergency alert stated 2" of rain has fallen in North Baton Rouge.

All of that is going to Manchac. I have no idea how much that will change the time it takes for it to get below AB, but any more rain is bad rain.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/17/16 at 8:55 pm to
The Mississippi river drains like 60% of the country. One swamp in SELA ain't shite for ol man river.

I just hope I never see this again in my lifetime.
Posted by BamaFanInTigerland
Baton Rouge, LA
Member since Sep 2009
787 posts
Posted on 8/17/16 at 8:55 pm to
quote:

Alligator/Manchac was 12.64' @ 7p. (.24"/hr)
Bluff Swamp was 12.66'@ 7p. (.24"/hr)

No change at Bayou Fountain (14.97').

Manchac dropped another 1.5" (16.2').


Freaking rain.

Alligator/Manchac was 12.7' @ 8p. (.72"/hr)
Bluff Swamp was 12.73'@ 8p. (.84"/hr)

Bayou Fountain went up .84" (15.04').

We do have another river gauge online @ Welsh Gully on other side of Santa Maria. It's @ 14.1' now.

Manchac dropped another 1.3" (16.09').
Posted by doubleb
Baton Rouge
Member since Aug 2006
42629 posts
Posted on 8/17/16 at 9:03 pm to
Back in the day Bsyou Manchac flowed into the Mississippi River and I suspect would have taken a lot of that water naturally years ago.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/17/16 at 9:05 pm to
frick me sideways
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/17/16 at 9:07 pm to
All of this shite would have gone to the river back in the day.

Most of prairieville would also go under water every spring.

There's no easy solution.
Posted by Taxing Tiger
Member since Mar 2013
649 posts
Posted on 8/17/16 at 9:32 pm to
Any of y'all have any updates? Rain set us back a bit. Saw word floating around that we only had another 5-8 inches to suffer through before the rise stopped.
Posted by udtiger
Over your left shoulder
Member since Nov 2006
115431 posts
Posted on 8/17/16 at 9:36 pm to
quote:

another 5-8 inches to suffer through


TWSS
Posted by Paul Allen
Montauk, NY
Member since Nov 2007
78345 posts
Posted on 8/17/16 at 9:40 pm to
So it set us back how much?
Posted by potent357
Prairieville
Member since Jan 2010
4245 posts
Posted on 8/17/16 at 9:48 pm to
Local media has stopped the coverage like this event is over. Not sure what is going on anymore.
Posted by doubleb
Baton Rouge
Member since Aug 2006
42629 posts
Posted on 8/17/16 at 9:48 pm to
It's all so complex and often it's trial and error.

No way to go back, the only way is forward using our precious resources to improve the quality of life as best we can, but we will never find perfection.
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