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

Posted on 2/13/20 at 8:23 am to
Posted by DirtyMikeandtheBoys
Member since May 2011
19419 posts
Posted on 2/13/20 at 8:23 am to
quote:

How long till the Mallards pile in?
Posted by choupiquesushi
yaton rouge
Member since Jun 2006
30432 posts
Posted on 2/13/20 at 8:23 am to
but muh trout.... now you have to reopen the MRGO...
Posted by lotik
Member since Jul 2018
323 posts
Posted on 2/13/20 at 8:42 am to
It blows my mind that people would be upset about attempts to save the swamp.
Posted by TimeOutdoors
AK
Member since Sep 2014
12120 posts
Posted on 2/13/20 at 8:46 am to
Posted by lotik
Member since Jul 2018
323 posts
Posted on 2/13/20 at 9:04 am to
I could be wrong, but that research covers the exact issues Louisiana is facing with the construction of levees to prevent flooding. This project is meant to "undo" that.
Posted by upgrade
Member since Jul 2011
12973 posts
Posted on 2/13/20 at 9:41 am to
Yeah, we’re in kind of a do nothing, surely lose it- do something maybe save it or at least slow down losing it kind of situation. The swamp ain’t just gonna get better on its own.
Posted by TimeOutdoors
AK
Member since Sep 2014
12120 posts
Posted on 2/13/20 at 9:58 am to
Not as familiar with Louisiana so I’ll stick to talking about the Everglades and those of you that are familiar with the swamp can decide if it’s the same or not. What it’s done in Florida is push nutrient rich water into the canals where algae blooms have taken over. This has starved the waters for oxygen so in addition to it being unsightly and smelly it’s also killed or driven out fish.

People argue over the red tide because it generates offshore, but everyone does agree that the nutrient runoff isn’t helping.
Posted by upgrade
Member since Jul 2011
12973 posts
Posted on 2/13/20 at 10:09 am to
To simply, man took annual (or semi annual) freshwater away from the swamp with the levees. The freshwater used to naturally flow into there.

The swamp is dying without it, so this is mans attempt to restore some of what used to naturally happen.

Edit: I get that these projects aren’t exactly free, but if you build siphons that have the capability of being opened or completely shut off I don’t see a down side other than cost.
This post was edited on 2/13/20 at 10:18 am
Posted by lotik
Member since Jul 2018
323 posts
Posted on 2/13/20 at 10:10 am to
Maurepas had an algae bloom just last year. We also had a huge amount of nutrient dense fresh water. I believe the key is keep the water moving. This diversion should do that, as well as keep the salt water intrusion down. Hopefully the people planning and designing this know more than I do.

Posted by SpillwayRoyalty
Member since Nov 2019
529 posts
Posted on 2/13/20 at 10:19 am to
This gets me so excited that the swamp could come back! It sucks that it will take another few years just to get started.

But will this diversion be able to build any land, or will it be mostly moving water and not sediment?
Posted by lotik
Member since Jul 2018
323 posts
Posted on 2/13/20 at 10:33 am to
Check out the second video in the OP, but the answer to your question is yes.
Posted by upgrade
Member since Jul 2011
12973 posts
Posted on 2/13/20 at 10:38 am to
I’m gonna assume I’ll be too old to enjoy the new land that could or would be built by the sediment.

Posted by choupiquesushi
yaton rouge
Member since Jun 2006
30432 posts
Posted on 2/13/20 at 11:07 am to
quote:

’m gonna assume I’ll be too old to enjoy the new land that could or would be built by the sediment.
I can remember fishing blind river as a 8 year old in 1973 and the fishing was unreal...... insanely ridiculous decline by 1983..... and it just kept on going.... would take very little time for fishing to improve....
Posted by upgrade
Member since Jul 2011
12973 posts
Posted on 2/13/20 at 11:38 am to
Oh I know the fishing can turn around quickly. I was talking about sediment deposits actually building land.
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
134839 posts
Posted on 2/13/20 at 12:20 pm to
This is going to help when it's finished in 2062
Posted by ecb
Member since Jul 2010
9331 posts
Posted on 2/13/20 at 12:24 pm to
FLA has been ruined by the sugar industry and tourism
Posted by Tiger Prawn
Member since Dec 2016
21847 posts
Posted on 2/13/20 at 12:36 pm to
I think the issue with Maurepas Swamp is that with it being cutoff from the Mississippi River by the river levees, the combination of allowing saltwater intrusion into the swamp and salvinia taking over in all the stagnant water and killing off all the other aquatic vegetation.

The idea with this diversion is to have the river water be able to flush the swamp in the spring when the river gets high, allow sediment to rebuild some land, and the freshwater influx to allow cypress and other trees to grow again in parts of the swamp that were dying due to salinity increasing.
Posted by White Bear
Yonnygo
Member since Jul 2014
13770 posts
Posted on 2/13/20 at 12:46 pm to
quote:

This is going to help when it's finished in 2062
Unfortunately, we'll probably look around in 20yrs and wonder why nothing's been done and where the money went.
Posted by Grassy1
Member since Oct 2009
6249 posts
Posted on 2/13/20 at 12:59 pm to
Just curious, does/will the level of Lake Maurepas affect the flow of it's tributary rivers?
Posted by MrLSU
Yellowstone, Val d'isere
Member since Jan 2004
25909 posts
Posted on 2/13/20 at 1:19 pm to
quote:

Sorely needed to save the swamp, but guessing it won’t do wonders for the saltwater fishing at the twin spans, trestles and such.


This will definitely change the salinity levels in Lake Pontchartrain over the next 10 years with 2000 cfs pumping out of Maurepas freshwater diversion but then couple this with the Mid-Breton diversion project which will pump 35,000 to 75,000 cfs of water into Lake Borgne and the impact will be significant for our fishery.



This post was edited on 2/13/20 at 1:21 pm
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