[Amezarak]

The article doesn't even go into this, but the primary cause of the issue is not climate change, but natural processes. The Mississippi river used to be undammed and untrammeled; envision a hose whipping around (in geological terms) spraying tremendous amounts of sediment over a very wide area.

Now, the Mississippi is tightly controlled. Most areas are no longer getting that sediment. So natural subsidence and erosion processes mean that "land" is sinking back below the water.

The solution (for this project) entailed reconnecting the Mississippi to the area, restoring sediment deposition. But this does have a lot of negative effects as well, because it impacts salinity levels and of course the Mississippi is also full of fertilizer and other substances.

[selimthegrim]

Landry flat out lied about the expected oxygen and salinity levels.

[Amezarak]

I know nothing about Landry and have no opinion on him or those statements specifically, but I'm familiar with the kerfuffle over the Bonnet Carré Spillway that allegedly devastated Mississippi fisheries, and obviously it has some impact. I suppose he overstated them?

[selimthegrim]

The spillway perhaps could be opened more often but can you cite something about this alleged devastation?

[Amezarak]

The claim is that opening the spillway decreased salinity in the Mississippi Sound and caused substantial hardship for Mississippi fishermen. They want it opened less often, not more often. There was a lawsuit against the Army Corps of Engineers over it. It’s hard to see why Mississippi would care at all if it weren’t true.

Papers: https://www.scirp.org/pdf/ojce_1882046.pdf (salinity)

https://www.sciencedirect.com/science/article/pii/S004896972... (dolphin mortality)

News stories: https://www.mpbonline.org/blogs/news/five-years-after-disast...

> With salinity levels bottomed-out as a result of the overwhelming freshwater intrusion from the Spillway, an estimated 95% of the estuary’s oyster population was wiped out. 2018 remains the last time a wild oyster was harvested from Mississippi waters – once among the most productive oyster fisheries in the world.

> Data provided by MDMR shows the seafood industry along the Coast, which in many respects was both the first and primary early-economic driver of the region, suffered revenue losses exceeding $210 million in 2019 alone.

https://www.wlox.com/2023/01/19/court-rules-army-corps-engin...

I can definitely understand why, after events like this, people would be extremely leery of other Mississippi river diversions.

[selimthegrim]

I have been to that harbor where Gautier’s is recently myself and I feel for them but Landry isn’t governor of MS.