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Message
re: Mississippi River Flooding - Links & Pictures in 1st Post
Posted on 4/30/11 at 8:50 pm to GeorgeTheGreek
Posted on 4/30/11 at 8:50 pm to GeorgeTheGreek
quote:
In BR the river is suppose to hit 44.5 feet, which would not be as high as the 1927 river crest.
Baton Rouge and New Orleans aren't the real issue here compared to the stretch from Cairo, Ill down to Three Rivers. I would predict that there would be some failures upriver like 1927 which would relieve pressure down south before it breached from BR to New Orleans anyways.
This post was edited on 4/30/11 at 8:52 pm
0
Posted on 4/30/11 at 8:52 pm to Geauxtiga
It isn't bad yet in Louisiana, but will probably get that way. Cairo, Illinois, and the Birds Point - New Madrid Floodway in Missouri are under mandatory evacuation orders. Kentucky Lake can hold less than five more feet of water before the Corps starts discharging it into the Ohio River. The activation of the Birds Point - New Madrid Floodway and Bonnet Carre and Morganza Spillways are very real possibilities.
Posted on 4/30/11 at 8:59 pm to RhodeIslandRed
Posted on 4/30/11 at 10:05 pm to bakersman
quote:
it's in eastern avoyelles parish. if you have ever drove to marksville from br, you have passed in just outside of simmesport. i'm worried a little cuz i live only 1 mile away from the guide levee south of the fuse plug levee. the guide levees are 30 feet high but the fuse plug levee is only 10 feet high. since this floodway has never been used, im concerned about how the guide levee will hold up. and a lot of people live in this area. only twice has water reached the fuse plug levee. in 1997 the water reached the bottom of it. but in 73 the water reached the top of the levee. and the water at red river landing is expected to be 2 feet higher than 73.
Bakersman, you and I live not too far from each other.
Posted on 4/30/11 at 10:47 pm to TigerDog83
You can't accurately compare this year's flood potential to 1927. The Bonnet Carre spillway was built as a direct result of the '27 flood. There were many privately owned and poorly maintained levees in 1927. Levee heights varied in 1927.
As a result of the catastrophic flooding in '27, new uniform construction standards were implemented for river levees. New inspection protocals and schedules were developed. Spillways and control structures have been built.
I'm not saying it can't ever flood, but our infrastructure is much more robust than in 1927.
As a result of the catastrophic flooding in '27, new uniform construction standards were implemented for river levees. New inspection protocals and schedules were developed. Spillways and control structures have been built.
I'm not saying it can't ever flood, but our infrastructure is much more robust than in 1927.
Posted on 4/30/11 at 10:50 pm to bralossus
quote:
t in 73 the water reached the top of the levee.
In 73, they had to build mud boxes on top of the levee to raise the height 4-6 feet to prevent over-topping. From Vidalia to the control structure. Any weak point would have compromised South La, west of the river. The control stricture almost failed as well. Scary times are close
Posted on 4/30/11 at 10:55 pm to CCT
quote:
Westminster is considered to be a flood zone. Parents were forced to buy flood insurance when they moved there in 1967...pretty sure it's still considered one...
Not as of a few years ago when we bought our home in Westminster.
Posted on 4/30/11 at 11:22 pm to WoWyHi
quote:
I think BR's levees are high enough, but who knows. Anyone know the highest the Mississippi ever peaked in BR?
Check out these 2 websites.
the first is the updated river forecasts:
LINK
The second is all the peaks along the River:
LINK []=144108&pt[]=141463&pt[]=141839&pt[]=143934&pt[]=141618&pt[]=146423&pt[]=143366&pt[]=142172&pt[]=141493&pt[]=142940&pt[]=144619&pt[]=144798&pt[]=144609&pt[]=141308&pt[]=144449&pt[]=143828&pt[]=142711&allpoints=143846,142736,143816,143998,145144,142659,142234,145887,144081,142375,143866,141506,142962,143885,143323,144201,144542,142873,143260,143099,142560,144186,143177,142054,143945,144055,141370,143630,141931,142812,141676,142534,144568,143535,144589,143030,144031,143079,144282,141445,141722,141383,143445,143646,143787,143574,143545,142773,141629,144517,142500,143196,142105,142509,142418,144108,141463,141839,143934,141618,146423,143366,142172,141493,142940,144619,144798,144609,141308,144449,143828,142711&data[]=hydrograph&submit=Make+my+River+Page!" target="_blank" rel="nofollow noreferrer">LINK
As you can see alot of record highs are going to be broken up north but down south we are not going to get the record levels.
During the flood in 2008 the river crested in Baton Rouge at 43.1 ft. Looks like they are calling for more than that this year.
As for the opening of the spillways it is not a level that triggers the opening it is the discharge(Amount of flow) in the river.
By law the COPRS is mandated to open the Bonnet Carre Spillway when the discharge reaches 1.25 million cfs in New Orleans. In 2008 this happened at a stage of 42.5 ft at Baton Rouge.
By law the CORPS is mandated to open the Morganza Spillway when the discharge reaches 1.5 million cfs in Baton Rouge. Not sure what stage this will occur because it has not happened in a while.
Baton Rouge and New Orleans should be fine. I know there is a low point in the levees around Angola that the CORPS is always worried about.
Trust me I do this for a living. Its my job.
Posted on 4/30/11 at 11:39 pm to ScottieP
Not sure about the flood levels and feel sorry for any body it will affect but pissed the river is so high bc it is finally warm enough to crawfish at cat island and with the river this high all the gates will be closed.
Really not being an arse and hope nobody is affected by the flood waters. The torandos have caused enough damage for people in US to handle for now
Really not being an arse and hope nobody is affected by the flood waters. The torandos have caused enough damage for people in US to handle for now
Posted on 4/30/11 at 11:46 pm to ScottieP
i took a 4000 level GEOL class at LSU: Coastal and shallow marine depositional systems class my senior year in '08.. was a very interesting class (not to mention prob one of my most difficult finals) and took it at a very appropriate time w/ the levels the MISS reached that year. May pull out my notes about some of the flood implications if i get bored tomorrow
Posted on 4/30/11 at 11:48 pm to David Wooderson
quote:
Not sure about the flood levels and feel sorry for any body it will affect but pissed the river is so high bc it is finally warm enough to crawfish at cat island and with the river this high all the gates will be closed.
Not sure if it will make you feel any better but the Mississippi River water is still pretty damn cold so I am not sure how the crawfishing near the river would be. I know a few weeks back a few of the fishermen in the Atch Basin were bitching about water temps.
High water will effect the crawfishing in the Basin, along with the fishing in Venice. Not to mention what all the river water does to the lake when the spillway is opened.
This post was edited on 4/30/11 at 11:49 pm
Posted on 4/30/11 at 11:52 pm to ScottieP
Yeah I know the water has been cold and that is why I haven't went yet. It is getting to be a good time to go at cat island and the flood waters are going to fick that up. I have some freinds who crawfish on their property close to it and they haven't had a ton of luck this year bc the cold water. Bad thing is once you get closer to June the crawfish are the big hard red ones that don't boil worth a shite to me.
Posted on 4/30/11 at 11:56 pm to mmill32
quote:
i took a 4000 level GEOL class at LSU: Coastal and shallow marine depositional systems class my senior year in '08
Actually the largest concentration(mg/l)of sediment has already passed in the initial rise about mid February.
With the amount of water flowing now the loads(mg) are going to be high but the concentrations have probably already peaked. Then again I have never seen this amount of water at Baton Rouge so I maybe wrong.
I heard last week they are worried about Southwest Pass filling in and getting the $$$ to get enough dredges going to keep the channel open. Alot of deposition at the mouth once the velocities decrease.
Posted on 5/1/11 at 12:00 am to White Roach
quote:
As a result of the catastrophic flooding in '27, new uniform construction standards were implemented for river levees. New inspection protocals and schedules were developed. Spillways and control structures have been built.
That might be true, but with improved drainage systems being built throughout the years a lot more runoff quickly ends up pooling in streams and rivers. 1973 was pretty interesting and I would seriously doubt a tremendous amount of infrastructure has been built since then.
Posted on 5/1/11 at 12:14 am to ScottieP
I could easily see that but also see the powers that be being very proactive w/ the amount of $ that could be potentially lost
Posted on 5/1/11 at 12:18 am to Geauxtiga
Yep, mostly upriver from BTR. My niece and her husband work for the US Army Corps of Engineers in Vicksburg (Mississippi Valley Division).
Posted on 5/1/11 at 12:53 am to Boglehead
Holy shite. at what point? thought BR was only getting to 44.5?
Posted on 5/1/11 at 12:58 am to Boglehead
Per Scottie P's links:
47.28' on 5/15/27 @ Baton Rouge. Forecasted crest this year is 44.5 on 5/21.
47.28' on 5/15/27 @ Baton Rouge. Forecasted crest this year is 44.5 on 5/21.
Posted on 5/1/11 at 1:04 am to Boglehead
In BR? 48 is not expected. Where is he getting that info?
Posted on 5/1/11 at 1:10 am to White Roach
this may have been addressed already, but does opening the flood gates in NOLA only serve to help NOLA or does it decrease the river levels elsewhere?
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