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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsIs it time to give up on NOLA? Move people inland?
This sounds grim, but history is very likely to repeat itself. Perhaps with worse consequences...
After a $14-Billion Upgrade, New Orleans' Levees Are Sinking
Sea level rise and ground subsidence will render the flood barriers inadequate in just four years
But now, 11 months after the Army Corps of Engineers completed one of the largest public works projects in world history, the agency says the system will stop providing adequate protection in as little as four years because of rising sea levels and shrinking levees.
The growing vulnerability of the New Orleans area is forcing the Army Corps to begin assessing repair work, including raising hundreds of miles of levees and floodwalls that form a meandering earth and concrete fortress around the city and its adjacent suburbs.
These systems that maybe were protecting us before are no longer going to be able to protect us without adjustments, said Emily Vuxton, policy director of the Coalition to Restore Coastal Louisiana, an environmental group. She said repair costs could be hundreds of millions of dollars, with 75% paid by federal taxpayers.
https://www.scientificamerican.com/article/after-a-14-billion-upgrade-new-orleans-levees-are-sinking/
TexasTowelie
(112,347 posts)have they ruled out fracking disposal wells to alleviate the problem?
Since this is a case of something moving when it isn't supposed to be moving, I thought that the flowchart said that they should be using duct tape? more
Hortensis
(58,785 posts)with costs rising prohibitively or coverage not available.
JustAnotherGen
(31,849 posts)417,000 people?
bluecollar2
(3,622 posts)JustAnotherGen
(31,849 posts)SaintLouisBlues
(1,244 posts)JustAnotherGen
(31,849 posts)Was down there during New Years. It's as silly to me as building huge water pipe lines from Lake Ontario to Georgia.
rampartc
(5,432 posts)i will die here before or during the next flood, but i am not dying anywhere else.
snpsmom
(684 posts)If I could find a way to get my husband to relocate, I would be back there in a hot minute.
rampartc
(5,432 posts)but if you are someplace else and happy stay there and grow roots.
this place has changed since katrina, a lot, and i sometimes wish we could have settled somewhere else.
Thekaspervote
(32,787 posts)Thekaspervote
(32,787 posts)Wounded Bear
(58,685 posts)NOLA is built on sediment, miles deep, that has been deposited over many thousand years by the Mississippi River.
It is soft. When you build large buildings on it, no matter how well the foundations are, they sink, especially when people are drawing ground water out for drinking and watering crops, etc. So, the ground is sinking and the sea is rising. One thing is certain, when Mother Nature acts, mankind better watch out. Now, we're amping up Mother Nature's strength by fueling global warming.
Millions are at risk world wide by sea level rise, from NOLA to London to Shanghai ad nauseum.
Pope George Ringo II
(1,896 posts)But as long as the mouth of the Mississippi remains an important port, it's probably just going to override them.
NCjack
(10,279 posts)are one big, wet storm away from another kind of flood disaster. At the confluence of the Mississippi, Atchafalaya, and Red River, the US Corp of Engineers has constructed levees and gates to control and distribute the rivers' water flow volume. The Atchafalaya gets 100% of the Red's water and 30% of the Mississippi's water. While performing very well now, global change may send a super wet storm up the Mississippi Valley and overwhelm the distribution system. The Atchafalaya's water level there is 12 feet below that of the Mississippi's. If the Mississippi rises and flows across its bank into the Atchafalaya, it will cut a connection because of the 12-ft drop, and within hours the Mississippi would change its course. The results would be the Atchafalaya would become the New Mississippi, and between the Red River to the Gulf of Mexico, that zone -- including Baton Rouge and New Orleans -- would become bayou cities, cut-off without Mississippi water to make depth for commercial traffic. That risk has been recognized at least since the late 1800s. But, there was never a policy to limit exposure to the risk.
The US government should immediately begin a program to save what we can from loss of the Mississippi River cutting a channel to the Atchafalaya.
[link:https://www.theadvocate.com/baton_rouge/news/environment/article_d5a29f26-06a9-11e8-abde-8b9660c81021.html|]