I assume the canal is at the local level and is pumped into the lake? Breach would have to be at lake levee unless the canal has levees too!?
go to post 2392 go to that forum the guy put up a map of where the breach occured it clarifys actually it comes from the lake
The canal runs from Lake Ponchatrain, through the city, and connects to the river on the other side. It has levees on both sides. From a map of the flooding, there have to be more breaches. The area east of the canal would not flood if only the west side levee failed. They got their flooding a day later than the original doomsday scenario, and at a somewhat lesser level, but they got it.
I am at a loss for how they can, or even if we should, rebuild New Orleans. No matter what can be devised, it is still a bowl with sides a bit above what can be very turbulent water.