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re: If Nola had same levee system today as pre-Katrina, would this have been bad as Katrina?
Posted on 8/30/21 at 3:42 pm to upgrade
Posted on 8/30/21 at 3:42 pm to upgrade
The disaster was caused by years and years of levee neglect and fed money given to the city to upgrade them spent “ elsewhere “.
We all knew this was going on and concerned with the maintenance for years…
Throw in pumps below ground level that were not submersible rated… lack of fuel… and staff that had to leave or drown with the equipment…and you have a massive engineering disaster along with the natural disaster
The superdome roof and causeway road damage also failed because of engineering flaws….. there is a fascinating tv show on the engineering failures…
This was corrected by some very good politicians and state leaders and this disaster has shown the progress made…
Congrats to south Louisiana for those efforts!!!!
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Posted on 8/30/21 at 3:42 pm to Smellslikeupdog
It potentially could have been as bad, but the chances are less. I haven't seen exact surge numbers for Ida, so I can't say for sure. The majority of your failures in Katrina were over-topping leading to failure. If Ida's surge was high enough to go over some of the old walls, then yes, it may have been as bad as Katrina.
The surge in Katrina was fricking huge. The shitty pre-Katrina levees were no match for it. If we look at the opposite of your question and ask if Katrina would have been as bad if we had our current protection system, the answer is it most likely it wouldn't have been as bad (for New Orleans. Landmass still gets boned).
There is no certain answer for either question. You always have to account for wildcards, such as a barge breaking loose and hitting a flood wall.
The surge in Katrina was fricking huge. The shitty pre-Katrina levees were no match for it. If we look at the opposite of your question and ask if Katrina would have been as bad if we had our current protection system, the answer is it most likely it wouldn't have been as bad (for New Orleans. Landmass still gets boned).
There is no certain answer for either question. You always have to account for wildcards, such as a barge breaking loose and hitting a flood wall.
This post was edited on 8/30/21 at 3:44 pm
Posted on 8/30/21 at 3:48 pm to Ignignot
quote:
Katrina was cat5/big storm for a much longer time
Thus it pushed much more water in than ida
I've always maintained that it would have been better for NOLA had Katrina stayed a Cat. 5 or high-end 4 through landfall and kept moving. The fact that it started weakening when it did only served to broaden the wind field. Even after the winds start to decrease, that energy keeps going and the water that was already in motion keeps moving. That was just so much energy and so much water over such a vast amount of real estate. The weakening and broadening of the wind field happened at the worst possible time.
Posted on 8/30/21 at 3:51 pm to Smellslikeupdog
No. Katrina was to the east and piled lake water up against the south shore. Ida piled it up against the west and north shores.
Posted on 8/30/21 at 3:53 pm to MMauler
quote:
This wasn't a REAL test
I disagree. It was a great test. Was it a test to the max? No. It will allow us to asses what worked and what didn't work and see if anything needs to be reworked. I think you'll also see some more money and resources devoted to areas further out from the city.
Posted on 8/30/21 at 4:43 pm to Smellslikeupdog
At some point in the not too distant future there won’t be any more marsh to speak of between the gulf and the city. NO will look like GI did yesterday. Won’t matter how many levees they build. Sucks but is what it is.
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