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re: Comite Diversion Canal won't be done until the end of 2022 according to Corps
Posted on 3/9/21 at 2:33 pm to The Boat
Posted on 3/9/21 at 2:33 pm to The Boat
quote:
That's what they're shifting 61 for in north EBR? I was wondering what they were doing there
Yeah, I thought they were building another industrial facility when I drove by a few weeks ago and saw them driving pilings.
0
Posted on 3/9/21 at 2:34 pm to LSUBoo
quote:
So either this diversion canal needs to extend all the way to the Amite
Wait are they actually going to do this? I haven't read much about that.
Is that a real option or just talk?
Posted on 3/9/21 at 2:35 pm to TDsngumbo
quote:right to the east of the area they are building the bridges there is a the drainage structure that is already build. it is a decent size spillway. It ties into he levee system and is far enough up in elevation the rise in the river wont affect it.
I'm an idiot but my mind can't comprehend how this will be diverted to the Mississippi River with the levee in the way. Again, I'm an idiot and far from an engineer. Can someone explain how they're going to build this and prevent backflow during times of high river levels? If installing locks, those locks are going to have to be pretty fricking heavy duty to hold back the Mississippi River.
Posted on 3/9/21 at 2:36 pm to goofball
Too bad it wasn't in place 7 years ago. It would have reduced the impact of that flood.
Posted on 3/9/21 at 2:38 pm to dewster
quote:
They've started construction before. Then stopped.
well this contract goes from the drainage structure, to the new bridges for KCS and US61 to about 1000 feet of drainage canal west. idk what the schedule is after that. This post was edited on 3/9/21 at 2:43 pm
Posted on 3/9/21 at 2:39 pm to BottomlandBrew
quote:you can go see it. they are drilling the shafts for KCS next week.
The outfall structure west of 61 was started in 2004, so it was happening then too. I'll believe it when I see it.
Posted on 3/9/21 at 2:40 pm to CarRamrod
So it's 50' deep and 380' wide.
Will people be able to put boats into that? Or is this thing going to be dry when the water is low?
Will people be able to put boats into that? Or is this thing going to be dry when the water is low?
Posted on 3/9/21 at 2:41 pm to CarRamrod
quote:
right to the east of the area they are building the bridges there is a the drainage structure that is already build. it is a decent size spillway. It ties into he levee system and is far enough up in elevation the rise in the river wont affect it.
I didn't realize there aren't any levees up there. Question -- if the land is so high up there, how does the Comite drain into it during times of flooding? Is it just set up to where once the Comite rises to a certain level, the excess flows into the Mississippi River?
Posted on 3/9/21 at 2:42 pm to member12
quote:
Will people be able to put boats into that? Or is this thing going to be dry when the water is low?
Going to be dry. Water will be pumped into it at points along the canal.
Posted on 3/9/21 at 2:42 pm to link
Sarcasm? If not, that's not how any of this works, lol
Posted on 3/9/21 at 2:42 pm to dewster
quote:
I know what I saw. I'll try to find the link for the 2016 estimates if I have time later.
I've seen it before as well, but it's illogical based on the precise location of all the water dumped in the 2016 flood.
By the time you're dealing with the East side of the Amite River north of the Comite confluence you're probably not even making an inch of difference, as everything dumped south of the diversion canal is still flowing down toward the Amite and backing up all the way to the diversion canal.
I think those were highly optimistic estimates in order to drive the construction of the project, but they don't account for the specific intense deluge that happened in 2016.
Posted on 3/9/21 at 2:43 pm to CarRamrod
Are you using east and west correctly?
Posted on 3/9/21 at 2:43 pm to link
quote:
that's not a big deal at all. all we have to do is avoid
500 year storm means 1/500 chance to happen each year
100 year storm means 1/100 chance to happen each year
people bet against higher odds to try to make money all the time....
Posted on 3/9/21 at 2:43 pm to TDsngumbo
quote:
I didn't realize there aren't any levees up there. Question -- if the land is so high up there, how does the Comite drain into it during times of flooding? Is it just set up to where once the Comite rises to a certain level, the excess flows into the Mississippi River
Pumps will push water into the canal from the lower areas.
Posted on 3/9/21 at 2:43 pm to goofball
quote:
Wait are they actually going to do this? I haven't read much about that.
Is that a real option or just talk?
Just talk... but a logical extension of the project if you want it to make a bigger impact.
Posted on 3/9/21 at 2:44 pm to TDsngumbo
quote:i really dont know the hydraulics but the crest of the drainage structure should be low enough that when water flows into the canal at one end it is slope to where it will flow toward the drainage structure.
I didn't realize there aren't any levees up there. Question -- if the land is so high up there, how does the Comite drain into it during times of flooding? Is it just set up to where once the Comite rises to a certain level, the excess flows into the Mississippi River?
Posted on 3/9/21 at 2:48 pm to geauxfortwo
quote:i really dont know, the existing canal by the DS holds water. i would assume this canal will hold water. but guys the canal looks to be only 100 feet wide. and this wont be diverting water 100% of the time from the comite to the MS like the Amite Diversion south of BR from my understanding. its going to be a drainage ditch
Will people be able to put boats into that? Or is this thing going to be dry when the water is low?
Going to be dry. Water will be pumped into it at points along the canal.
This post was edited on 3/9/21 at 2:56 pm
Posted on 3/9/21 at 2:50 pm to dewster
quote:
At some point I read that it would have dropped it by around 10"-14" at Denham Springs. I'll try to find the link.
Yes, some areas would have still flooded....but a shite load of homes that flooded would have not gotten any water.
It would have a bigger impact on Central and Zachary than Denham Springs.
The basin is basically bowl shaped. Every additional foot of flood waters inundates more land than the last. Even a 5" drop would be YUGE. A foot drop would have probably saved thousands of homes.
They also should do more to extend the diversion canal to the Amite, dredge the darn rivers, and look into an upriver reservoir. Nothing is going to stop flooding if we see another storm with 30" of rain in 72 hours upriver from Baton Rouge.
This post was edited on 3/9/21 at 2:52 pm
Posted on 3/9/21 at 2:58 pm to member12
I still think the artificial damn the interstate created caused a lot of it as well
Who knows maybe it would have been worse downstream below I-12
Who knows maybe it would have been worse downstream below I-12
Posted on 3/9/21 at 3:01 pm to nicholastiger
quote:
I still think the artificial damn the interstate created caused a lot of it as well
They changed the design for the I-10 widening because of that. I know it had an impact, not sure what though.
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