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Posted on 5/10/11 at 9:43 am to coverboy
quote:
Atchafalaya river in Morgan City @ 6.54 this morning. On my way to work I saw it has already made its way up to the flood gate on Front Street. People are talking about it getting anywhere from 12-14 feet by the time the crest gets here. We're putting a lot of faith in the 15' wall and the levees around here.
the seawall is 22 feet
Posted on 5/10/11 at 9:48 am to Ash Williams
To: LSU Faculty, Staff and Students
From: Mike Martin, Chancellor
Re: Mississippi River and LSU EOC
Date: May 10, 2011
As you are aware, the Mississippi River is rising to record levels in some parts of the country and later this month may reach its highest level since 1927 here in Baton Rouge. I am writing to let you know that the LSU Emergency Operations Center (EOC) is closely monitoring the situation and is in consultation with city, parish and state officials to gather information and make plans should there be adverse effects to the campus as a result of water seepage, sand boils or other more critical developments. In addition, we are fortunate to have the expertise of our own LSU researchers to advise us on potential impacts of the river’s rising level.
At this time we are being advised that the river will rise to a level of 47.5 feet on May 23 and will likely maintain at its crest for seven to 10 days. We have been advised the opening of the Morganza Spillway would reduce the eventual crest by one to two feet.
All scheduled activities on the LSU campus are still planned, including all final exams and commencement exercises on Friday, May 20. We will keep you informed as we gather more information and make additional preparations.
From: Mike Martin, Chancellor
Re: Mississippi River and LSU EOC
Date: May 10, 2011
As you are aware, the Mississippi River is rising to record levels in some parts of the country and later this month may reach its highest level since 1927 here in Baton Rouge. I am writing to let you know that the LSU Emergency Operations Center (EOC) is closely monitoring the situation and is in consultation with city, parish and state officials to gather information and make plans should there be adverse effects to the campus as a result of water seepage, sand boils or other more critical developments. In addition, we are fortunate to have the expertise of our own LSU researchers to advise us on potential impacts of the river’s rising level.
At this time we are being advised that the river will rise to a level of 47.5 feet on May 23 and will likely maintain at its crest for seven to 10 days. We have been advised the opening of the Morganza Spillway would reduce the eventual crest by one to two feet.
All scheduled activities on the LSU campus are still planned, including all final exams and commencement exercises on Friday, May 20. We will keep you informed as we gather more information and make additional preparations.
Posted on 5/10/11 at 9:49 am to Mudminnow
Mississippi River hits crest at 2 a.m.; flooding could last until end of May
[url]LINK [/url]
After weeks in which it steadily rose toward historic stages, the Mississippi River began cresting early this morning, National Weather Service officials say.
The river reached its highest observed point so far -- 47.85 feet at the Memphis gauge -- at 2 a.m. and then began dipping ever so slightly. But the crest isn't over, said meteorologist Bill Borghoff.
"It's going to meander around that level for the next 24 to 36 hours," he said. "We're going to pretty much hold onto the crest for a while."
The 47.85-foot level, which is nearly 14 feet above flood stage, is less than 1 foot below the record crest of 48.7 feet set on Feb. 10, 1937.
Officials expect flooding along the river to last until at least the end of the month.
[url]LINK [/url]
After weeks in which it steadily rose toward historic stages, the Mississippi River began cresting early this morning, National Weather Service officials say.
The river reached its highest observed point so far -- 47.85 feet at the Memphis gauge -- at 2 a.m. and then began dipping ever so slightly. But the crest isn't over, said meteorologist Bill Borghoff.
"It's going to meander around that level for the next 24 to 36 hours," he said. "We're going to pretty much hold onto the crest for a while."
The 47.85-foot level, which is nearly 14 feet above flood stage, is less than 1 foot below the record crest of 48.7 feet set on Feb. 10, 1937.
Officials expect flooding along the river to last until at least the end of the month.
Posted on 5/10/11 at 9:58 am to junkfunky
quote:
It would depend on the reason for the footing subsiding. If it is do to lowered bearing capacity at the individual footing, depending on how the weight of the additional water interacts with the surface and subsurface soils, it could either increase or decrease the bearing capacity of the footing. Those are deep foundations that should be at least 50-75 feet deep shafts. The lateral forces should not have as much affect on the footing as the downward force of the extra water.
Yeah after talking about it around the office more, it will hold up regardless of the shear force. The old timers seem to think all that old concrete mix can withstand anything compared to newer mix designs. Downward compression may be another story, but I've never heard of that effecting anything and it won't do any immediate damage.
Posted on 5/10/11 at 10:04 am to tetu
Old concrete > new concrete.
Posted on 5/10/11 at 10:10 am to meauxjeaux2
Video of Natchez Under the Hill flooding and temporary levee construction.
LINK
And crest is still close to two weeks away, and an additional 10 feet of water to go.
LINK
And crest is still close to two weeks away, and an additional 10 feet of water to go.
Posted on 5/10/11 at 10:21 am to tetu
quote:
Downward compression may be another story, but I've never heard of that effecting anything and it won't do any immediate damage.
I have no idea about the design or current conditions of the footings. However, the only reason the footings would be lower than the designed goal would be lowered bearing or friction capacities. In other words, the downward movement has already occurred at the footing do to changes or incorrect assumptions of the soil. The bridge has joints to allow movement between the supports. I'm sure there is still more room for the footings to vary in elevations before the bridge would become unsafe.
Either way, I highly doubt that would cause a significant failure. If any thing it would probably just cause some valleys or ridges at the joints.
Posted on 5/10/11 at 10:24 am to TigerNAtux
Upriver view from Perry st. Wharf.
Was trying to get the Air Draft gauge for the upper MRB. Air draft is 155' clearence.
Was trying to get the Air Draft gauge for the upper MRB. Air draft is 155' clearence.
Posted on 5/10/11 at 10:34 am to junkfunky
quote:
The lateral forces should not have as much affect on the footing as the downward force of the extra water.
Also, wouldn't the lateral force of the flow be shielded by the Old 190 just to the north? If I remember correctly -- and I could be wrong -- the old highway was built on levees, while the "new" 190 had a much longer elevated section.
Posted on 5/10/11 at 10:38 am to JudgeHolden
quote:
Also, wouldn't the lateral force of the flow be shielded by the Old 190 just to the north? If I remember correctly -- and I could be wrong -- the old highway was built on levees, while the "new" 190 had a much longer elevated section.
I'm not sure about the hydrology of the area but I would think it helps some, even if it's just a little.
Posted on 5/10/11 at 10:39 am to Beachtiger
Pics from MS river in Natchez. shite's looking BAD.
Posted on 5/10/11 at 10:41 am to mikelbr
I hate looking at these pictures with no before pictures. I don't know what I'm looking at.
Posted on 5/10/11 at 10:41 am to southernelite
dont look then
Posted on 5/10/11 at 10:42 am to southernelite
quote:
I hate looking at these pictures with no before pictures. I don't know what I'm looking at.
sorry about that. In my pics, just imagine the water about 20 feet lower than you see there and then imagine it going up another 10 feet.
ETA: and sorry I couldn't edit the contrast here at work. I was fighting the sun all day trying to lighten the objects in the shadows.
This post was edited on 5/10/11 at 10:44 am
Posted on 5/10/11 at 10:43 am to missloutiger
Who's dumbass idea was it to build something OUTSIDE of the levee on one of the biggest rivers on the planet? They should be sterilized so their stupidity can't spread. Forget that, they're too stupid to be sharing oxygen with us.
Posted on 5/10/11 at 10:45 am to ComicTiger
quote:
Who's dumbass idea was it to build something OUTSIDE of the levee on one of the biggest rivers on the planet? They should be sterilized so their stupidity can't spread. Forget that, they're too stupid to be sharing oxygen with us.
A bunch of guys that went to med school.
Posted on 5/10/11 at 10:47 am to ComicTiger
Question concerning the Bayou Bouef Locks. The level on the west side (the Atchafalaya Side) of the locks is at 6.2 and the east side is 3.1, a difference of 3.1 feet. Is this the standard height differential, or is there one or more other factors to consider?
Posted on 5/10/11 at 10:48 am to southernelite
quote:
I hate looking at these pictures with no before pictures. I don't know what I'm looking at.
Let me sum it up. The water is damned high and is probably going to flood those brand new buildings there. The buildings are worth lots of money, so they are putting big boxes of sand to make walls around them. It is a last ditch effort.
Let me summarize the summary: It is very bad in Vidalia.
Posted on 5/10/11 at 10:52 am to JudgeHolden
quote:
It is very bad in Vidalia
I drove through there yesterday and saw the frenzied construction first hand. Pretty desperate, but they have to try something. The current of the river looked incredible from the bridge.
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