There are now frequent periods where you have to boil your water before you can use it, and it floods in a hard rain which didn't really happen 10 years ago.
I guess what I am saying is I don't believe you, and most of New Orleans going into the ocean as well.
New Orleans and Miami will just slowly deteriorate over time and people will stop investing in these places because it isn't worth the flood risks. Eventually New Orleans will really just be a tourist destination. The French Quarter and probably some of uptown around St. Charles will survive unless things get really bad.