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Started By
Message
re: New Orleans is flooding
Posted on 6/10/20 at 10:11 am to lighter345
Posted on 6/10/20 at 10:11 am to lighter345
quote:
They could also just be filled with other gunk and someone needs to actually clean the exit pipe not inside the storm drain.
naa, those pumps can suck down most anything. ive seen them suck down traffic cones. the system is just not turned on (or broken)
This post was edited on 6/10/20 at 10:13 am
2
Posted on 6/10/20 at 10:17 am to Covingtontiger77
quote:
ravity man, gravity.
I’m no engineer. But If you are in a hole, water won’t drain up.
drains are literally across the street from one another but maybe lol
Posted on 6/10/20 at 10:21 am to rocket31
quote:
because why else would it be working and then all of a sudden just quit?
Could be you're closer to a pump, so it appeared it was draining at first, but as upstream water flowed down towards you, it filled up the system. The pumps could still be going, but they can only handle so much.
Posted on 6/10/20 at 10:22 am to rocket31
pumps are on again for me, draining now 
Posted on 6/10/20 at 10:22 am to jlovel7
quote:
New Orleans is flooding
Crawfish prices going up.
Posted on 6/10/20 at 10:23 am to BottomlandBrew
quote:
Could be you're closer to a pump, so it appeared it was draining at first, but as upstream water flowed down towards you, it filled up the system. The pumps could still be going, but they can only handle so much.
yea, possibly, im not going to say i know exactly what is happening
i do know that it was working during the heavy rain, then it stopped during the light rain and we started to flood, and now its working again.
Posted on 6/10/20 at 10:30 am to rocket31
quote:
naa, those pumps can suck down most anything. ive seen them suck down traffic cones. the system is just not turned on (or broken)
The drains don't suck anything.
Everything is gravity to the canals. If the canals are rising, then there's more water falling than what's being pumped (either they aren't on or aren't enough of them).
If the canals are steady or falling and the streets are rising, then the pipes in the streets are clogged or not big enough.
Posted on 6/10/20 at 10:32 am to rocket31
This might explain why Gentily and Lakeview is flooded the worse this morning
quote:
According to the Veolia testing, DPS 1 is in relatively good shape capacity-wise. So is the station downstream of DPS 1, which is DPS 6. Its percent capacity is about 87%. Many other stations are not as fortunate. Perhaps the poster child would be station 4 in Gentilly (at Prentiss and Warrington). Its capacity is a measly 58%, with two of its three large pumps moving less than half their design capacity (the third could not have a successful test performed by Veolia, but it is likely in just as bad a shape). Station 12 in Lakeview, with its single 25 cycle pump, is also woefully under capacity, at 42%.
Posted on 6/10/20 at 10:35 am to OvertheDwayneBowe
quote:
The drains don't suck anything.
meh, suck or gravity, same difference. the power behind the system when its ON or working is obvious.
like i said, the catch basins will *suck* down traffic cones with ease, so the excuse that debris or tree limbs are blocking the system, is just that, "an excuse"
This post was edited on 6/10/20 at 10:38 am
Posted on 6/10/20 at 10:36 am to rocket31
There are pics on NOLA.COM showing how high the Palmetto Canal was. That means the pumps are not working as designed.
Posted on 6/10/20 at 10:44 am to Fat Harry
quote:
That means the pumps are not working as designed.
On the best days, the pumps can only handle 1" of rain in the first hour and 1/2" every hour after that. Today's 3-4 inches an hour is way above maximum. Not saying the pumps weren't working, but they also aren't designed to handle that much water, so backups were inevitable.
Posted on 6/10/20 at 10:44 am to Fat Harry
quote:
That means the pumps are not working as designed.
people keep saying..."the pumps just cant keep up"
that's true they cant...but they should be. The pumps are underperforming and this will explain it to you.
It's a long Facebook Post but it's worth the read if you want to understand the state of the pumping and drainage system in New Orleans
LINK
quote:
This is a huge finding, and has implications throughout the system. If testing at four different pump stations shows they move far less water the more pumps are brought online,
quote:
Veolia found through integrated testing that two of the three large (1000 cfs) pumps there (specifically pumps C and D) only moved 43% and 48% of their nameplate ratings.
Posted on 6/10/20 at 10:45 am to OvertheDwayneBowe
quote:
The drains don't suck anything.
Everything is gravity to the canals
Right.
There are multiple issues.
1) The drains/pipe capacity gets exceeded. The water is being bottlenecked by the capacity of the drains and pipes (which may not be completely open due to damage, being filled up with trash, etc).
2) The "lag" time of the pumps. The pumps do not stay on 24/7. Further, they are mostly not automatic. Someone has to turn them on and keep them running. When a big storm is predicted to come, they can have people there at the stations ready to go. When unpredicted storms pop up like this morning, they are unprepared and have to get people to the pumps and get them turned on. (they aren't all manned 24/7). That takes time.
3) A lot of people don't realize this, but "street capacity" is part of the system. The system is designed and run knowing that some water will temporairly be held in the street, similar to a detention pond.
Posted on 6/10/20 at 10:47 am to BottomlandBrew
quote:
On the best days, the pumps can only handle 1" of rain in the first hour and 1/2" every hour after that.
It is far less than 1/2" per hour in some sections of town
Posted on 6/10/20 at 10:48 am to tgrbaitn08
People need to be in jail over these pumps
Posted on 6/10/20 at 10:49 am to LSUFanHouston
quote:
3) A lot of people don't realize this, but "street capacity" is part of the system. The system is designed and run knowing that some water will temporairly be held in the street, similar to a detention pond.
Correct. Nola uses 6" as their storage capacity for the streets.
Posted on 6/10/20 at 10:52 am to mylsuhat
quote:
People need to be in jail over these pumps
yep..Im tired of hearing "1" per the first hour 1/2' every hour after that" bullshite...thats horseshite and someone needs to be held accountable
Posted on 6/10/20 at 10:57 am to BottomlandBrew
quote:
Correct. Nola uses 6" as their storage capacity for the streets.
Thanks, I could not remember the exact vertical amount.
Posted on 6/10/20 at 11:01 am to tgrbaitn08
What's broke more often?
Upvote for NOLA Pumps
Downvote for mcdonalds shake machine
Upvote for NOLA Pumps
Downvote for mcdonalds shake machine
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