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omegaman66
LSU Fan
greenwell springs
Member since Oct 2007
14021 posts

re: $130 million approved for Maurepas Swamp river diversion project today
Diversion will not run 12 months of the year. Only 6 months.

Diversion will not build land. Not its goal. Not a need there.

Speck fishing will be pushed south a little at times.

Redfish will be mostly unchanged.

Bass fishing and sacalait fishing and bream fishing will get a big boost.

Right now the swamp is basically a dead zone home to a gars and the invasive giant duckweed from hell.

The water from the diversion will hopefully help flush out some of that crap to allow life under what is not solid mats of that crap.

The water will help up Oxygen levels in the swamp and drastically increase oxygenated water that won't kill the fish that live in the swamp. Fish stress levels will go way down. Fish kills will go way down. Areas that are not hypoxic will go way way up.

Of all the project to restore the coast this one would not be super high on my list. Mostly the area is changing not washing away... yet.

Of all the project to restore the coast this one will be the closest to a slam dunk in accomplishing its goals. Just need the gov't to follow through.

This project should fix all the trouble it is designed to fix and not require any further projects in the future, unlike so many other coastal projects such as barrier island restoration just as an example.



DownshiftAndFloorIt
LSU Fan
Here
Member since Jan 2011
53102 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

think the issue with Maurepas Swamp is that with it being cutoff from the Mississippi River by the river levees,


This is the big ultimate issue, but theres really no feasible way to completely address it. Youd have to dynamite every river control structure/levee all the way up and let it do it's own thing.

Even if we did that, itd probably shift west and all that would end up being salt water anyway.


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jimbeam
USA Fan
University of LSU
Member since Oct 2011
59119 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

Diversion will not build land. Not its goal. Not a need there.
Folks need to realize this. Just like Caernarvon, it’s about freshwater.


choupiquesushi
LSU Fan
yaton rouge
Member since Jun 2006
22573 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

quote:
Diversion will not build land. Not its goal. Not a need there.
Folks need to realize this. Just like Caernarvon, it’s about freshwater.


and restoring some pre-levee flowages


MrLSU
LSU Fan
New York/New Orleans/Melbourne/30A
Member since Jan 2004
14539 posts

re: $130 million approved for Maurepas Swamp river diversion project today
The Maurepas/Hope Canal Diversion will pump out up to 2k cfs and the Covent/Blind River Diversion will pump out another 3k cfs of freshwater for a total of 5k cfs of new freshwater into the entire Maurepas estuary which in turn will push more freshwater into Lake Pontchartrain.

The real game changers though for the East side of Louisiana will be the Lower Breton Sound Diversion (50k cfs) and Upper Breton Sound Sediment Diversion projects (250k cfs) into Lake Borgne. Mid-Breton is expected to pump between 5k and 35k cfs year round with much higher amounts during the high water periods of the Miss River.

The Upper Breton will pump 250k during high period with an avg cfs of around 75k to 100k cfs year round.

Lake Pontchartrain and Lake Borgne will become freshwater lakes with brackish water in Lake Borgne towards the eastern fringes of Miss and MRGO rocks south of Hopedale. The saltwater fishery will absolutely change from what we are all used to as it will move further south and east. The Upper Breton Diversion is where the fight is going to happen with the Oyster Fisherman because the oyster reefs in St. Bernard Parish will be pushed far south and to the east.


SpillwayRoyalty
Member since Nov 2019
29 posts

re: $130 million approved for Maurepas Swamp river diversion project today
LINK /


This link is a cool read about the man made changes and its effects on Lake Maurepas and Ponchatrain.

I also think it is so interesting that Gen. Jackson closed off Bayou Manchac that connected the Mississippi River to Lake Maurepas before the Battle of New Orleans. Crazy to wonder how things would be different.


choupiquesushi
LSU Fan
yaton rouge
Member since Jun 2006
22573 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

Lake Pontchartrain and Lake Borgne will become freshwater lakes with brackish water in Lake Borgne towards the eastern fringes of Miss and MRGO rocks south of Hopedale.
just like it changed dramatically with levees and channelization.....


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30
mack the knife
LSU Fan
EBR
Member since Oct 2012
3907 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

closed off Bayou Manchac that connected the Mississippi River to Lake Maurepas


check your facts on this one. manchac never was a consistent distributary of the mississippi river except during extreme flood events. manchac is on the cut bank (high side) of the river. people attempted to connect the 2 rivers permanently but it wasn't feasible.
travel upriver on manchac by boat and watch how it peters-out.


SpillwayRoyalty
Member since Nov 2019
29 posts

re: $130 million approved for Maurepas Swamp river diversion project today
Oh I did not know that. Thank you I will look more into that.


mack the knife
LSU Fan
EBR
Member since Oct 2012
3907 posts

re: $130 million approved for Maurepas Swamp river diversion project today
not to hijack the thread, but the history of manchac is pretty interesting. it's been an international border between various countries territories a few times.


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Higgysmalls
Ft Lauderdale
Member since Jun 2016
2430 posts

re: $130 million approved for Maurepas Swamp river diversion project today
With all of the diversions. In ten years saltwater fishing on the east side of the river is going to be terrible


choupiquesushi
LSU Fan
yaton rouge
Member since Jun 2006
22573 posts

re: $130 million approved for Maurepas Swamp river diversion project today
So Higgy 100 years ago where u think all that water went?


omegaman66
LSU Fan
greenwell springs
Member since Oct 2007
14021 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

he Maurepas/Hope Canal Diversion will pump out up to 2k cfs and the Covent/Blind River Diversion will pump out another 3k cfs of freshwater for a total of 5k cfs of new freshwater into the entire Maurepas estuary which in turn will push more freshwater into Lake Pontchartrain.


My understanding is that convent blind river diversion is dead. And that this is an alternative to it. Not in addition to it.


MrLSU
LSU Fan
New York/New Orleans/Melbourne/30A
Member since Jan 2004
14539 posts

re: $130 million approved for Maurepas Swamp river diversion project today
As of Oct of 2019 it was still moving forward pending the approval of the dollars.


White Bear
USA Fan
NWLA
Member since Jul 2014
5189 posts

re: $130 million approved for Maurepas Swamp river diversion project today
Will this diversion cause silting to the immediate south?


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omegaman66
LSU Fan
greenwell springs
Member since Oct 2007
14021 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

As of Oct of 2019 it was still moving forward pending the approval of the dollars.



Serious question, no malice, do you have a link?


MrLSU
LSU Fan
New York/New Orleans/Melbourne/30A
Member since Jan 2004
14539 posts

re: $130 million approved for Maurepas Swamp river diversion project today
LINK from Dec 3, 2019

USACOE. PO-68 Project from Oct 2019
This post was edited on 2/13 at 9:40 pm


CarRamrod
USA Fan
Spurbury, VT
Member since Dec 2006
50399 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

oyster reefs in St. Bernard Parish will be pushed far south and to the east.

back out to where they used to be


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41
omegaman66
LSU Fan
greenwell springs
Member since Oct 2007
14021 posts

re: $130 million approved for Maurepas Swamp river diversion project today
quote:

LINK from Dec 3, 2019

USACOE. PO-68 Project from Oct 2019


Thanks for the links. I am not saying I am right but I think I am. Please correct me if I am wrong. What I see in your links are projects that aren't necessarily funded or ever will be funded.

They always have by design more projects than they plan to build. They whittle them down to just a few.

Listed projects doesn't mean they even plan on building them.

Again. I am not an expert, just someone that is interested, so if ANYONE can show that convent blind river project is being funded I would be happy to find out I am wrong.


Grassy1
LSU Fan
alligator bayou
Member since Oct 2009
4888 posts

re: $130 million approved for Maurepas Swamp river diversion project today
Thanks for all the positive things that this will do, but I'm still curious as to how this will affect the flow of the tributaries of Lake Maurepas.

So it's only going to be open 6 months/year. I'm guessing when the Mississippi is high (Spring?). Will this affect those contributing rivers when they're high?

Just curious. Ya' know?


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