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from the always-look-on-the-bright-side-of-life dept.
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
The $14 billion network of levees and floodwalls that was built to protect greater New Orleans after Hurricane Katrina was a seemingly invincible bulwark against flooding.
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.
"I think this work is necessary. We have to protect the population of New Orleans," Vuxton said.
The protection system was built over a decade and finished last May when the Army Corps completed a final component that involves pumps.
The agency's projection that the system will "no longer provide [required] risk reduction as early as 2023" illustrates the rapidly changing conditions being experienced both globally as sea levels rise faster than expected and locally as erosion wipes out protective barrier islands and marshlands in southeastern Louisiana.
Could never have seen that coming.
(Score: 5, Insightful) by c0lo on Friday April 19 2019, @09:58AM (2 children)
You mean... like Holland? Which managed to stay reclaim land and keep it dry since 14th century [wikipedia.org]? With a busy international airport 3m under the sea level [wikipedia.org]?
Just how do you want to make America great if you give up and let the sea make it smaller? (large grin)
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 2) by JoeMerchant on Friday April 19 2019, @02:21PM
That's actually part of what makes America great - so much land, relatively so few people. We can strip mine, abandon lands to the sea, frack and make our ground water flammable, and still we have more good land than all of Europe!
O.K. O.K. - not technically true, raw land, counting Alaska and Scandinavia, is roughly equivalent, but the mitigating factor is that our population is still just 50% that of Europe - so those pesky mountains and deserts aren't as bad, per capita, as they might seem.
🌻🌻 [google.com]
(Score: 3, Insightful) by PinkyGigglebrain on Friday April 19 2019, @04:21PM
I think you missed the bit about the land in New Orleans sinking, not just that the sea level is rising.
To the best of my knowledge the land Holland has secured is not sinking, so all they have to do is keep building the levees higher and add pumps to compensate for rising sea levels.
Different situations,
"Beware those who would deny you Knowledge, For in their hearts they dream themselves your Master."