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re: Morganza Spillway may or may not open for a 3rd time -- lack of clear info from ACoE

Posted on 3/9/19 at 5:25 pm to
Posted by FutureMikeVIII
Houston
Member since Sep 2011
1777 posts
Posted on 3/9/19 at 5:25 pm to
What was a foot higher in 2011? On March 9, 2011 the Mississippi River at BR was 26.83 ft.

There is still a lot of spring left. So we’ve got a primed river, a shite load of snow left to melt, and a wet weather pattern.

There will be more peaks this spring that the levees will have to pass. Hopefully we don’t see a flood that beats 2011, but with our current setup, it’s very possible.
Posted by BeepNode
Lafayette
Member since Feb 2014
10005 posts
Posted on 3/9/19 at 5:36 pm to
Yep. And 2011 was easy to mitigate because the ground was dry. I just wanted to put some of the nervous energy about this particular crest at ease.
Posted by NYNolaguy1
Member since May 2011
21764 posts
Posted on 3/9/19 at 5:40 pm to
quote:

I don't think that's the Bonnet Carre Spillway structure


Its not Morganza

Posted by Bigfishchoupique
Member since Jul 2017
9607 posts
Posted on 3/9/19 at 6:50 pm to
That is the Morganza Spillway in your post.
Posted by Chuker
St George, Louisiana
Member since Nov 2015
7544 posts
Posted on 3/9/19 at 6:56 pm to
quote:

This isn't the main crest. That'll be in April or May



So you're saying it will be higher in April/May?

I bet it won't. Might get up to its usual flood stage but none of this exceptionally high shite.
Posted by Fratigerguy
Member since Jan 2014
4960 posts
Posted on 3/9/19 at 7:12 pm to
quote:

That is the Morganza Spillway in your post.


The picture in that post is not from the forebay structure. Not sure where it is, but it’s not the forebay.
Posted by Bigfishchoupique
Member since Jul 2017
9607 posts
Posted on 3/9/19 at 7:50 pm to
You are correct. I am certain now that it is the little over bank structure between the Low Sill Control Structure ( original ORCS ) and the Sidney Murray power plant.
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 3/9/19 at 7:56 pm to
quote:

So you're saying it will be higher in April/May?



Could be. It's all a timing game. There is a lot of snow to melt in the upper Midwest. It's going to stay cold up there for a couple of more weeks. Once it heats up, a fast melt is going to send a big slug down the river.

Manageable most likely as long as we can break from this wet pattern across Tenn/Ohio/Kentucky by the time the melt really gets going.
Posted by Chuker
St George, Louisiana
Member since Nov 2015
7544 posts
Posted on 3/9/19 at 8:14 pm to
quote:

pattern across Tenn/Ohio/Kentucky



so about 15% of the total Ms river drainage plain.
Posted by TDsngumbo
Member since Oct 2011
50795 posts
Posted on 3/9/19 at 8:17 pm to
Someone else is gonna have to keep this thread updated for me. Maybe the admins can. I broke my arm and had to have surgery today and can barely type now. Gonna have to bow out for a while and focus on healing.

Thanks guys.
Posted by JudgeHolden
Gila River
Member since Jan 2008
18566 posts
Posted on 3/9/19 at 8:21 pm to
Sorry, baw.
Posted by Chuker
St George, Louisiana
Member since Nov 2015
7544 posts
Posted on 3/9/19 at 8:23 pm to
quote:

TDsngumbo

Sry to hear. That shite is annoying AF.


Hope it wasn't your fap arm.
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 3/9/19 at 8:26 pm to
quote:

so about 15% of the total Ms river drainage plain.


If it keeps on rainin'....

It's the combo of rain continuing like this over the Ohio valley and the coming snowmelt from the upper Midwest that could well get the river higher than now. We'll see how the river drops into the end of March before getting too worried about that scenario.
Posted by deltaland
Member since Mar 2011
102759 posts
Posted on 3/9/19 at 8:50 pm to
Got another big storm system coming mid week and a chance of rain on Monday.

Looks the week after next will be dry though. It’s going to be worrisome with the river this high this early and a lot of wet season to go.
Posted by FutureMikeVIII
Houston
Member since Sep 2011
1777 posts
Posted on 3/9/19 at 8:53 pm to
quote:

so about 15% of the total Ms river drainage plain.


Too bad it accounts for more than 50% the flow to the lower Mississippi. What’s your point?
Posted by Fratigerguy
Member since Jan 2014
4960 posts
Posted on 3/9/19 at 11:03 pm to
Yeah I wasn’t sure what it was but it looked a little off for Morganza. Funny thing is, that if you google morganza spillway structure, that picture comes up.
Posted by Bigfishchoupique
Member since Jul 2017
9607 posts
Posted on 3/10/19 at 3:25 am to
The gantry structures are identical on the Forebay and the Overbank. I’ve driven over them hundreds of times.
Posted by NYNolaguy1
Member since May 2011
21764 posts
Posted on 3/10/19 at 8:13 am to


If you look at the long range forecast for New Madrid, MO, they are looking at breaking 2011 records (when the corps blew up the floodway). Its a ways out, but something to keep an eye on.
Posted by DeCat ODahouse
Premium Member
Member since Jan 2017
1676 posts
Posted on 3/10/19 at 9:04 am to
quote:

Gonna have to bow out for a while and focus on healing.


Sorry to hear, TD, could you at least post your avatar now and then?
--evil grin---
Posted by ToothMaker
Member since Feb 2013
33 posts
Posted on 3/10/19 at 11:34 am to
Levee slide on the YouTube. No worries

LINK
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