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re: On the back side of Alligator Bayou...Parish ordered evacuation (Aug 15th)

Posted on 8/16/16 at 9:07 pm to
Posted by Schmelly
Member since Jan 2014
16167 posts
Posted on 8/16/16 at 9:07 pm to
Well 74 at the front of OA was rising at a snails pace all day. But it "seems" to be picking up slightly. I quoted it cause it's dark & im eyeballing. It's still just barely going across the whole road
Posted by berrycajun
Baton Rouge
Member since May 2016
7223 posts
Posted on 8/16/16 at 9:08 pm to
Oak hills place is that huge neighborhood in between highland
Siegen
Perkins
Bluebonnet

Those roads make a big square around it

That's not going to flood from this manchac alligator bayou that y'all keep taking about, right? That's too far north, right?
This post was edited on 8/16/16 at 9:10 pm
Posted by Paul Allen
Montauk, NY
Member since Nov 2007
78345 posts
Posted on 8/16/16 at 9:09 pm to
Funny how one could be impassible tomorrow and the first is dry as a bone. Weird
Posted by Schmelly
Member since Jan 2014
16167 posts
Posted on 8/16/16 at 9:09 pm to
quote:

What's the elevation that it'll start spilling out of Spanish lake? At some point the water draining into Spanish lake will start draining to New River Canal (based on the observation that it's starting to run over Highway 74 by Bluff Rd), right? Won't that essentially limit the height the water will get to?


But here's the thing. The other side of 74 has been full all day too. It's not like it's spilling from the bluff side to the other side. It's the other way around.
Posted by Schmelly
Member since Jan 2014
16167 posts
Posted on 8/16/16 at 9:10 pm to
Man U all up in the wrong thread, homie
Posted by MNCscripper
St. George
Member since Jan 2004
11904 posts
Posted on 8/16/16 at 9:10 pm to
Did you read the title?
Posted by BamaFanInTigerland
Baton Rouge, LA
Member since Sep 2009
787 posts
Posted on 8/16/16 at 9:11 pm to
quote:

Where is the 15' number coming from?


Total guess on my part.

I'm looking at Bayou Fountain sitting at 15' and interstate section that was flooded by Manchac was 19'. Worst case is that all that has to equalize with Alligator Bayou before it goes back toward Amite. Average those with the 12' @ bluff and you get 15.3.
Posted by MNCscripper
St. George
Member since Jan 2004
11904 posts
Posted on 8/16/16 at 9:11 pm to
Paul why the hell do you question every piece of info provided?
Posted by Schmelly
Member since Jan 2014
16167 posts
Posted on 8/16/16 at 9:11 pm to
quote:

water is rushing over the road for at least 1/2 mile probably


What water? Alligator bayou?
Posted by Paul Allen
Montauk, NY
Member since Nov 2007
78345 posts
Posted on 8/16/16 at 9:12 pm to
Excuse me?
Posted by MNCscripper
St. George
Member since Jan 2004
11904 posts
Posted on 8/16/16 at 9:12 pm to
Yes
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72094 posts
Posted on 8/16/16 at 9:12 pm to
Yea it's all even right now. 74 won't limit anything. You won't see a big rush of water blasting over 74 like alligator bayou, because both sides are already at the same height.
Posted by mytigger
Member since Jan 2008
15363 posts
Posted on 8/16/16 at 9:12 pm to
I'm in Oak HIlls. We're 20 feet above highland road and dry as a bone.
Posted by berrycajun
Baton Rouge
Member since May 2016
7223 posts
Posted on 8/16/16 at 9:12 pm to
Me? Yes. But on the map oak hills looks sort of close to this bayou

im just wondering if in 3 days water creeps up to there
Posted by berrycajun
Baton Rouge
Member since May 2016
7223 posts
Posted on 8/16/16 at 9:14 pm to
Ok thx mytiggy

So water won't be going up 20 feet into oak hills

Thx!
Posted by mytigger
Member since Jan 2008
15363 posts
Posted on 8/16/16 at 9:14 pm to
quote:

im just wondering if in 3 days water creeps up to there


Maybe if the Mississippi River levee breaks. Maybe.
Posted by skuter
P'ville
Member since Jan 2005
6262 posts
Posted on 8/16/16 at 9:14 pm to
quote:

What water? Alligator bayou?


yes
Posted by berrycajun
Baton Rouge
Member since May 2016
7223 posts
Posted on 8/16/16 at 9:15 pm to
Goes to show you how little I understand this stuff
Posted by CidCock
Member since Sep 2007
Member since Feb 2011
8692 posts
Posted on 8/16/16 at 9:15 pm to
Someone said this earlier, but the fact that it continues to rise at a similar rate isn't good. Every 0.1" rise takes exponentially more water than the previous 0.1"'as it has more room to grow horizitontally. That's why on flood maps the 1000 year vs 500 doesn't differ much.
Posted by Schmelly
Member since Jan 2014
16167 posts
Posted on 8/16/16 at 9:16 pm to
quote:

Maybe if the Mississippi River levee breaks. Maybe.


Both of u need to go play in traffic
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