Should we abandon California because sooner or later "the big one" WILL destroy the cities there? San Francisco has been wrecked several times already. You can't hide from nature. Sooner or later, nature WILL Destroy what we build no matter WHERE we build it. The fact is, these things don't tend to happen all that often. When New Orleans eventually gets flooded again, we'll just pump it out and fix it again, just like how we rebuild anywhere else.
New Orleans isn't submerged under 200 feet of water. It's not completely leveled. It's a big filthy wet mess that'll take months to pump out and clean up. Anything at ground level which doesn't react well to being submerged will need to be replaced. Point being--once drained back out, the major structures will be pretty much intact. Wood frame houses are cheap to replace in comparison. It will cost a lot to repair the city, but it'd cost even more to completely rebuild a new city in some other location. Even if they did abandon it, you'd be looking at a massive cleanup bill in addition to the costs of building somewhere else.
This is the perfect time for the Corps of Engineers to figure out ways to improve their levee system and make what improvements they can. Hopefully they will. Keep this in perspective guys--the only difference between the flooding in New Orleans and anywhere else is we have to drain out the water instead of waiting for mother nature to do it. It's bad, but it's not the end of the world.
Those towns in Mississippi are a heck of a lot worse off than New Orleans. Some of them really DO have to completely rebuild from scratch.
Some people annoy me. Anytime something bad happens they keep saying "oh it's so unbelievable!". TV news is horrible for this. Then then next time something bad happens, the same people say the same stupid things. It's not "unbelievable". Similar or worse levels of damage have happened elsewhere before plenty of times. Look at Gavelston, Texas--they took it a lot worse than New Orleans when their "big one" hit. We'll fix it and in 20 years it'll just be another one for the history books.
J_A_B