- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Capacity of the London, 17th, and Orleans canals and pumps in NOLA
Posted on 8/18/16 at 2:33 pm
Posted on 8/18/16 at 2:33 pm
I would think even with the upgrades the 30+ inches some areas took on with this flood would still inundate New Orleans, Right? Good thing would be the water doesn't sit in the homes for 2 weeks like Katrina.
12
Posted on 8/18/16 at 2:35 pm to SuperSaint
The streets of New Orleans flood with 5" of rain. What do you think.
Posted on 8/18/16 at 2:38 pm to SuperSaint
I wouldn't say inundate, but some areas would have flooded. Hell, some areas of Nola flood with a few inches of rain. Nola's stormwater drains/canals can handle a way larger capacity than what BR has in place now. I can guarantee that's going to change soon, though.
ETA: Don't mean that BR will necessarily have a larger capacity drainage system put in place, just that the ACOE will be making some changes to BR and the surrounding areas.
ETA: Don't mean that BR will necessarily have a larger capacity drainage system put in place, just that the ACOE will be making some changes to BR and the surrounding areas.
This post was edited on 8/18/16 at 2:40 pm
Posted on 8/18/16 at 2:39 pm to SuperSaint
20,000 gpm i believe
Posted on 8/18/16 at 2:39 pm to SuperSaint
I would think you would have some street flooding and some would get into houses, but not on the scale of what Baton Rouge area just suffered. There are not so many rivers and streams in New Orleans that would overflow their banks, and the pumps would likely keep the drainage canals from overflowing.
Posted on 8/18/16 at 2:40 pm to Nado Jenkins83
So almost 29 mgd. And how many pumps are there?
Posted on 8/18/16 at 2:42 pm to SuperSaint
Even that much rain would have been no big deal for the London, 17th, and Orleans outflow canal pumps. Those things are massive.
The problem would have been the smaller, local pumps that pump from the drainage canals into the outflow canals. Those would have been overwhelmed. I believe at least in Jefferson parish, the pumps now all have raised generators so it's not like they would have shut down, they would have just not been able to pump fast enough.
The problem would have been the smaller, local pumps that pump from the drainage canals into the outflow canals. Those would have been overwhelmed. I believe at least in Jefferson parish, the pumps now all have raised generators so it's not like they would have shut down, they would have just not been able to pump fast enough.
Posted on 8/18/16 at 2:43 pm to BayouBengals18
quote:
I can guarantee that's going to change soon, though
where are you going to send the water?
Posted on 8/18/16 at 2:45 pm to Puck82
Why you see so many basement houses throughout the city. If you think the drainage is bad now it was a whole lot worse 20 years ago. I have friends that grew up in houses like this uptown and it was common for the basement to flood a few times a year.
Posted on 8/18/16 at 2:45 pm to SuperSaint
I believe the general rule of thumb is that the New Orleans pumps can handle about an inch of rain per hour.
Posted on 8/18/16 at 2:47 pm to Topwater Trout
Why not the MS River...?
Posted on 8/18/16 at 2:48 pm to SuperSaint
Of course there would be some flooding. How old are some of you?
LINK
However, my street did not have standing water even for May 8, 1995. With the current base flood elevation (in Lakeview at least), most post Katrina homes would not flood.
LINK
However, my street did not have standing water even for May 8, 1995. With the current base flood elevation (in Lakeview at least), most post Katrina homes would not flood.
Posted on 8/18/16 at 2:50 pm to BayouBengals18
So for the most part the flooding would be resigned to the shitty old street draining throughout the neighborhoods not getting the water to the main outflow canals going to the lake?
Posted on 8/18/16 at 2:51 pm to BayouBengals18
quote:
Why not the MS River...?
they want to do that with the comite diversion canal but stopped construction
Posted on 8/18/16 at 2:51 pm to SuperSaint
With the new system being built, there's a mechanism to stop water from continuing to flood into the canals from the lake.
Posted on 8/18/16 at 2:53 pm to SuperSaint
Yeah but the water still has to get there, which means with that much water there's going to be a lot of flooding to some degree, streets and low lying areas at least. There's a ways to go from the rain hitting and draining to a major canal.
Posted on 8/18/16 at 2:54 pm to The Cow Goes Moo Moo
Well I know as much.
When is all the updated pumps going to be fully implemented? I remember for the tenth anniversary they were saying there was still some stuff to be done?
Next should be getting the street draining up to par. I guess that's what they have been doing on Jefferson, Napoleon, Louisiana and so forth working their way towards downtown from uptown.
When is all the updated pumps going to be fully implemented? I remember for the tenth anniversary they were saying there was still some stuff to be done?
Next should be getting the street draining up to par. I guess that's what they have been doing on Jefferson, Napoleon, Louisiana and so forth working their way towards downtown from uptown.
Posted on 8/18/16 at 2:56 pm to SuperSaint
Supposedly, the pumping system can handle 1" the first hour and 1/2" for every hour afterwards. That's about 59 hours (almost 2 1/2 days) for 30". How fast did that rain fall again?
One benefit to Orleans and Jefferson type drainage systems is that the system is only affected by rain in your area. Part of the problem with rivers is that areas to the north can fill up the drainage basin so your local rainfall cannot flow downhill, and can even back up into you area.
One benefit to Orleans and Jefferson type drainage systems is that the system is only affected by rain in your area. Part of the problem with rivers is that areas to the north can fill up the drainage basin so your local rainfall cannot flow downhill, and can even back up into you area.
Posted on 8/18/16 at 2:58 pm to SuperSaint
quote:
So for the most part the flooding would be resigned to the shitty old street draining throughout the neighborhoods not getting the water to the main outflow canals going to the lake?
That's exactly what would happen.
The SELA projects approved after the 95 floods are still ongoing. They have resulted in an increased underground drainage capacity as well as in some areas, increased inner city pump capacity. But the outflow pumps can pump water faster than the city pumps can get water to the outflow canals.
The "old" measurement was an inch the first hour, and half an inch an hour after that. With SELA improvements in some areas it's more like 1.5 inches first hour, 1 inch after that. But given the rainfall rates of the BR storm, that would likely have been exceeded.
Posted on 8/18/16 at 3:10 pm to Topwater Trout
quote:
they want to do that with the comite diversion canal but stopped construction
Hopefully after this, the politicians realize that's what needs to be done, and they'll stop looking for handouts.
Page 1 of 2
Popular
Back to top
Follow TigerDroppings for LSU Football News