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Message
re: Harvey ***Catastrophic Flooding Event***
Posted on 8/30/17 at 11:11 am to alphaandomega
Posted on 8/30/17 at 11:11 am to alphaandomega
quote:
re the reservoirs (in the dry season) used as a lake or are they giant retention ponds?
I've read that they are 90% dry. The Addick dam wraps around about 60% of the impoundment area. The spillway is open but the reservoir is still rising and the emergency spillway is in use.
If the water starts running around the edge, or edges, of the dam/levee, it could cause serious problems. I think they are concerned that the water would erode the end(s) of the levee and it would be just like rolling up the flank of a defensive position. They wouldn't be able to stop it and they'd have an uncontrolled release on their hands. It would be a major disaster. Worse than what has already happened.
3
Posted on 8/30/17 at 11:29 am to White Roach
Any word from leesville or deridder?
Posted on 8/30/17 at 11:32 am to White Roach
From my understanding water is currently flowing around the edges of the dam. The outlet gates are open, but water is not up to the spillway, at this point.
Posted on 8/30/17 at 11:33 am to OldSouth
Not too bad in DeRidder area, some localized. But about to get rough west of town along the river. Toledo has started opening flood gates and there's nowhere for water to go
Posted on 8/30/17 at 11:38 am to Slim_Charles69
quote:
Trying to fly is a mess right now
Original flight home was supposed to be Monday from PCB. Driving to in-laws in Mobile today rebooked for Saturday out of New Orleans. No idea when we can get home. Pets are safe, home is undamaged, may have a flooded car at the airport.
Feeling fortunate.
Posted on 8/30/17 at 11:41 am to slackster
quote:
The gauge on Buffalo Bayou @ Beltway 8 is going in and out, but upstream at Dairy Ashford it is starting to level off. Still increasing slightly, and the highest it has been since the event started, but leveling off.
The Dairy Ashford gauge is more than Buffalo Bayou just below Barker.
Water from Addicks comes into BBayou just west of Eldridge so any increase at Dairy Ashford could be from either Barker or Addicks.
Posted on 8/30/17 at 11:43 am to White Roach
Addicks levels have stabilized as of this morning, and from what I read the water going around the edge of the levee was pretty minimal at the current elevations. Nothing to be concerned about as far as major flooding or the integrity of the dam.
Addicks gauge link
Addicks gauge link
This post was edited on 8/30/17 at 11:47 am
Posted on 8/30/17 at 11:45 am to real turf fan
How fortunate are we in Lake Charles?
Orange is literally a 20 minute drive on the interstate.
Lake Charles, I bet, didn't get 1.5" of rain.
There's been a literal dome from Sulphur to Iowa. Everyone else is getting drenched.
Orange is literally a 20 minute drive on the interstate.
Lake Charles, I bet, didn't get 1.5" of rain.
There's been a literal dome from Sulphur to Iowa. Everyone else is getting drenched.
Posted on 8/30/17 at 11:47 am to Prominentwon
quote:
How fortunate are we in Lake Charles?
Very. Dry air intrusion and a big stroke of luck on that deformation boundary last night. Really all of south Louisiana dodged a potential bullet here.
Posted on 8/30/17 at 11:48 am to Duke
We are fortunate. It just stinks that this new development out in the Gulf could be coming this way.
Posted on 8/30/17 at 11:49 am to CE Tiger
quote:
anybody know if there is a google earth overlay for the flooding or some other gis type tool?
The first information out after Katrina came from satellites via NOAA. Especially for Mississippi, the satellite photos high resolution showed where houses had been wiped off the face of the planet and where roads and bridges had been destroyed.
As the sky clears, I'd expect NOAA photos to appear for Texas and then for Louisiana
Posted on 8/30/17 at 11:53 am to alphaandomega
quote:
Are the reservoirs (in the dry season) used as a lake or are they giant retention ponds?
Dry season - the reservoirs are whatever nature decides them to be. Some years, they are giant mosquito infested retention ponds. Other years they are dry.
Google earth maps show the walking trails inside George Bush park (which IS Barker dam reservoir).
Neither is a dug out man made lake.
Remember both were built in the 1920s in response to floods way back then when Houston was no where near this large.
Posted on 8/30/17 at 12:01 pm to FutureMikeVIII
quote:
From my understanding water is currently flowing around the edges of the dam. The outlet gates are open, but water is not up to the spillway, at this point.
If that's accurate, that's not good. The spillway and emergency spillway should both be (have got to be) lower than the impoundment area bank/levee/dam. It seems that the only way water could be running around the dam edges, but not over the spillway, was if the dam ends have eroded to a level lower than the spillway lip. Not good.
Posted on 8/30/17 at 12:03 pm to SuperSaint
quote:
it's ridiculous. I could be posting about saving a school of autistic kids off a roof with the Baw Navy and the post would be downvoted before I hit 'jump to post'
This really isn't the place to talk about yourself nor your concern of something as stupid as downvotes. .
We have family, friends and neighbors that need our help, this thread is for them, not you.
Posted on 8/30/17 at 12:04 pm to real turf fan
Both have huge recreation areas in the bottom. Barker alone has a massive shooting range, baseball and softball parks, soccer fields, and passive Park elements. They aren't just a massive brush filled mosquito pit.
Posted on 8/30/17 at 12:05 pm to White Roach
quote:
The spillway and emergency spillway should both be (have got to be) lower than the impoundment area bank/levee/dam.
They should be...but they arent. For some reason the levees did not tie in to high ground and the natural ground elevation at the end of the levees is below that of the spillways.
This is true for both Addicks and Barker. No clue why it was designed this way.
Posted on 8/30/17 at 12:07 pm to NolaAg04
quote:
Addicks levels have stabilized as of this morning, and from what I read the water going around the edge of the levee was pretty minimal at the current elevations. Nothing to be concerned about as far as major flooding or the integrity of the dam.
That's good news that they're feeling okay about the structural integrity.
Have they closed the spillway gates? The last article I read (yesterday's LA Times, I think) said both spillway and emergency spillway were in use. It seems like they would still be trying to run the reservoir down enough to stop the uncontrolled flow around the dam ends.
Posted on 8/30/17 at 12:08 pm to Cowboyfan89
quote:62 in one hour.
Looks like more than 1 a-hole...lmao!
Not a record though.
Posted on 8/30/17 at 12:08 pm to Paul Allen
I've never seen a system develop into a tropical storm that far out
Posted on 8/30/17 at 12:10 pm to BayouBengals03
Yeah, it's unusual for sure
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