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re: Mississippi River Flooding - Links & Pictures in 1st Post

Posted on 5/9/11 at 10:40 am to
Posted by ScottieP
Baton Rouge, LA
Member since Feb 2004
1933 posts
Posted on 5/9/11 at 10:40 am to
quote:

Does anyone know where the stream guages are in the atchafalaya? Can they measure flows at both spillways? would be cool to see how much the basin knocks off the peak flows from ORCS/Morganza to Morgan City. As an engineer I get a little excited at the chance to analyze some data...


Check out the USGS web site we have water level and discharge at Vicksburg, Baton Rouge, Belle Chasse, Simmesport, Morgan City and Wax Lake. We also have data for sites on the GIWW in the Morgan City, Houma, Larose area.

LINK
Posted by ScottieP
Baton Rouge, LA
Member since Feb 2004
1933 posts
Posted on 5/9/11 at 10:42 am to
quote:

So if Morganza has 125 gates and 4800cfs (600kfcs/125) pass through each gate then they would open 88 gates to reach the 423kfcs to make sure BR is under the 1.5 million cfs.


Man I do not know how many gates are going to be opened. But they are going to open what needs to be opened to keep no more than 1.5 million past BR.
Posted by lsufan1971
Zachary
Member since Nov 2003
24229 posts
Posted on 5/9/11 at 10:44 am to
quote:

Dock in BTR ....... just found this....


pics taken 12-27-2010....very cool though
This post was edited on 5/9/11 at 10:45 am
Posted by ByronClink
Baton Rouge
Member since Mar 2007
720 posts
Posted on 5/9/11 at 10:46 am to
I posted a question about opening the Morganza Spillway that disappeared. So.....I'll ask here. Why does opening the Morganza Spillway result in up to 25' of water in St. Francisville. WAFB.com has a story that says this is likely, and the map they link to seems to show the same thing. I don't understand why diverting water from the Mississippi raises the water level in St. Francisville. Can somebody explain that?
Posted by LSUDad
Still on the move
Member since May 2004
62545 posts
Posted on 5/9/11 at 10:48 am to
quote:

Dock in BTR ....... just found this....



pics taken 12-27-2010....very cool though


The river is now between 5-6ft. below the dock surface...FYI
This post was edited on 5/9/11 at 10:53 am
Posted by JudgeHolden
Gila River
Member since Jan 2008
18566 posts
Posted on 5/9/11 at 10:53 am to
quote:

My guess would be that they open the 28 spreadout across the whole structure to let some water in. Then wait to allow the level in the spill to rise a certain amount and then open more bays.


The Corps is mobilizing people there now, and they are bringing them on earlier than was planned. Also, apparently the Corps is having "crowd control" issues at BC.
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
87398 posts
Posted on 5/9/11 at 10:55 am to
quote:

Why does opening the Morganza Spillway result in up to 25' of water in St. Francisville. WAFB.com has a story that says this is likely, and the map they link to seems to show the same thing. I don't understand why diverting water from the Mississippi raises the water level in St. Francisville. Can somebody explain that?
I'm not following that either.
Posted by ike221
Loo A Vul
Member since Aug 2006
13888 posts
Posted on 5/9/11 at 10:57 am to
quote:

I posted a question about opening the Morganza Spillway that disappeared. So.....I'll ask here. Why does opening the Morganza Spillway result in up to 25' of water in St. Francisville. WAFB.com has a story that says this is likely, and the map they link to seems to show the same thing. I don't understand why diverting water from the Mississippi raises the water level in St. Francisville. Can somebody explain that?


St. Francisville would likely flood regardless. With Thompasan Creek back up and the lower areas around Cat Island and such

Opening Morganza isn't causing St. Francisville to flood. Just the lower areas at the bottom of the hills and such and inflow through the bayous and creeks.
Posted by AlxTgr
Kyre Banorg
Member since Oct 2003
87398 posts
Posted on 5/9/11 at 11:01 am to
quote:

Opening Morganza isn't causing St. Francisville to flood.
Loks like a mistake Gannet/AP writers are continuing to propogate.
Posted by ByronClink
Baton Rouge
Member since Mar 2007
720 posts
Posted on 5/9/11 at 11:01 am to
That's what I have been figuring, but they keep tying opening MOrganza to "up to 25' of water" expected. The map indicates all of 25' water around St. Francisville.
Posted by jdani11
Member since Nov 2006
572 posts
Posted on 5/9/11 at 11:07 am to
The map shows all of the low lying areas below the "natural levee" in st. francisville getting flooded. All of this area allready has water over it and would regardless of opening or closing the morganza spillway. Cat island swamp is over 6000 acres alone that allready has lots of water on it. Everything Below the hills will have water
Posted by nrtiger
Paradise
Member since Nov 2003
1354 posts
Posted on 5/9/11 at 11:09 am to
quote:

That's what I have been figuring, but they keep tying opening MOrganza to "up to 25' of water" expected. The map indicates all of 25' water around St. Francisville.


Yes, they really don't know what they are talking about. Opening up Morganza will only help the Bayou Sara/St. Francisville area. Not that St. Francisville will even be remotely affected because it is on a natural bluff. Bayou Sara on the other hand will get some water if not already receiving some.
Posted by jdani11
Member since Nov 2006
572 posts
Posted on 5/9/11 at 11:12 am to
Bayou Sara is allready out of its banks. You can take a boat all the way to the bridge on hwy 66 today. The low water bridge is about 8' under
Posted by LSUDad
Still on the move
Member since May 2004
62545 posts
Posted on 5/9/11 at 11:21 am to
Word I got the river at BTR came up almost a foot in 12 hrs.

Posted by tgrbaitn08
Member since Dec 2007
148031 posts
Posted on 5/9/11 at 11:27 am to
Jindal news conference
Posted by ByronClink
Baton Rouge
Member since Mar 2007
720 posts
Posted on 5/9/11 at 11:28 am to
We have a camp at Cat Island that is 10' off the ground that has never had more than 2' of water on the stilts. I'm wondering if the camp will even be there when this is over.
Posted by jdani11
Member since Nov 2006
572 posts
Posted on 5/9/11 at 11:30 am to
Yeah, i grew up hunting Cat island all my life. This will be the highest water you have ever had there, unless you were hunting there in the 30's. If you only had 2' of water in 97 under your camp you will only have about 6-8' this time
This post was edited on 5/9/11 at 11:31 am
Posted by MrLSU
Yellowstone, Val d'isere
Member since Jan 2004
29741 posts
Posted on 5/9/11 at 11:33 am to
Unverified RUMOR at this point is that the Valero & Motiva/Shell Refineries will shut down early next week as a precaution. Exxon Refinery in Baton Rouge will also shut down. Waiting on word from the Chalmette Refinery, Murphy Refinery in Mereaux, Motiva Refinery in Covent, Marathon Refinery in Garyville, & Cononco/Phillips's Alliance Refinery in Belle Chase. Some if not all of those could be shut down for a couple of weeks. Each corporation will be providing updates in the next 48 hours.

Also the bad news is that New Orleans is now looking at exceeding the 19.5 mark. Unofficial 20.5 to 21. Bohemia Spillway is definitely under the cross hairs right now which would put an unprecedented volume of water into the Breton Sound area eastward.
This post was edited on 5/9/11 at 11:39 am
Posted by LSUDad
Still on the move
Member since May 2004
62545 posts
Posted on 5/9/11 at 11:35 am to
quote:

Jindal news conference


Results from 0900 meeting...
Posted by tgrbaitn08
Member since Dec 2007
148031 posts
Posted on 5/9/11 at 11:37 am to
Still waiting on it to start
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