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Started By
Message
re: River to crest near 20' Saturday, average levee height in N.O. is 20' (update in OP)
Posted on 7/10/19 at 4:32 pm to MrLSU
Posted on 7/10/19 at 4:32 pm to MrLSU
quote:
Locations in red are where levees along the Mississippi River are below 20 feet. Some locations are as low as 18 feet.
Lower 9 to Chalmette/Mereaux is going to have a real bad day.
1
Posted on 7/10/19 at 4:33 pm to NYNolaguy1
There should be a mandatory evacuation for these areas. I don’t see why there isn’t?
Posted on 7/10/19 at 4:34 pm to DhanTigers212
Sounds like Plaquemines is going to close the Jesuit Bend floodgate tomorrow
Posted on 7/10/19 at 4:34 pm to DhanTigers212
quote:
Do the river levees have the potential to break? Or just top over?
The problem with overtopping is the possiblity of scour on the top or other side, which would weaken the levee and increase the risk of breaking
Posted on 7/10/19 at 4:35 pm to DhanTigers212
quote:
Is there at all a possibility of the river breaking the levee?
The USACOE doesn't use the word "breaking" they use the word "overtopping" or "breaching". Breaching possible in lower 9th Ward, St. Bernard, Algiers, & Plaquemines. Overtopping on River Road uptown by the USACOE's headquarters.
Just to make everyone feel better Congress JUST approved funding for 24 foot Miss River levees for Orleans & Jefferson Parish!
Posted on 7/10/19 at 4:36 pm to bee Rye
quote:
no, 20 is the lowest spot, not sure where Mr Blue Check got his "average" idea from
" ... New Orleans, where all the levees are above average ... "
Posted on 7/10/19 at 4:37 pm to Major Dutch Schaefer
HJ Bosworth of Levees.org talks about the situation LINK
Posted on 7/10/19 at 4:38 pm to Bow dude72
If they open Morganza and BC (all the way) now they could lower the base flow.
I am actually curious to see if this happens.
I am actually curious to see if this happens.
This post was edited on 7/10/19 at 4:42 pm
Posted on 7/10/19 at 4:41 pm to BeeFense5
quote:
Sounds like Plaquemines is going to close the Jesuit Bend floodgate tomorrow
Is that the one just south of Belle Chasse that crosses 23 near the plant?
Posted on 7/10/19 at 4:42 pm to Smalls
quote:
Is that the one just south of Belle Chasse that crosses 23 near the plant?
Correct
Posted on 7/10/19 at 4:44 pm to Jim Rockford
Thanks for link.
Posted on 7/10/19 at 4:50 pm to BeeFense5
Plaquemines announced a MANDATORY evacuation per WWL south for the entire East Bank of Plaquemines Parish (i.e. Braithwaite) and will announce tomorrow that a MANDATORY evacuation will take place for the West Bank of Plaquemines Parish for all areas south of the flood wall in Belle Chase. West bank of Plaquemines south of the flood wall is currently under a voluntary evacuation right now.
This post was edited on 7/10/19 at 4:51 pm
Posted on 7/10/19 at 4:51 pm to CCT
Industrial Canal or Intracoastal. Surge would've come into those canals via Lake Borgne and MRGO.
Hurricane storm surge doesn't make it all the way up the Mississippi to New Orleans. The current situation is an anomaly because of the river being so much higher than it would normally be.
Hurricane storm surge doesn't make it all the way up the Mississippi to New Orleans. The current situation is an anomaly because of the river being so much higher than it would normally be.
Posted on 7/10/19 at 4:53 pm to MrLSU
Average height of the levee along the Mississippi River in JP is 25 feet.
Posted on 7/10/19 at 4:54 pm to Major Dutch Schaefer
If the levee does get topped or breaches the ambulance chasers will have a field day. The next their will be a class action suit filed against the Army Corp of Engineers for not opening the Morganza Spillway.
Posted on 7/10/19 at 4:55 pm to MrLSU
quote:
River Road uptown by the USACOE's headquarters.
Great, not far from here.
Posted on 7/10/19 at 4:56 pm to NYNolaguy1
Bonnet Carre is only 48% open. They can open the whole thing in 36 hours so they could open the rest of it up in 18 hours. They should do that tomorrow.. but they won't. That would give you a lot more wiggle room.
Posted on 7/10/19 at 4:56 pm to t00f
quote:
Average height of the levee along the Mississippi River in JP is 25 feet.
How high is the interior levee between Orleans and Jefferson? 19 ft at USACOE site would presumably flow towards the parish line.
Posted on 7/10/19 at 4:57 pm to Ponchy Tiger
quote:
ambulance chasers will have a field day. The next their will be a class action suit filed against the Army Corp of Engineers for not opening the Morganza Spillway.
And they’ll say hello to the feds’ little friend.
It’s called the Flood Control Act of 1928.
Absolute immunity.
Posted on 7/10/19 at 4:58 pm to The Boat
quote:
Bonnet Carre is only 48% open. They can open the whole thing in 36 hours so they could open the rest of it up in 18 hours. They should do that tomorrow.. but they won't. That would give you a lot more wiggle room.
I recently read that in this scenario the USACOE would be concerned with the structural integrity of the Bonnet Carre if they opened it up all the way during an event like this due to the pressure from water flowing through it.
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