In my work with the Center for Natural Hazards Research at East Carolina University, I have contributed on several projects related to post-Katrina New Orleans. This includes a paper in the Southern Economic Journal which I was a co-author, titled "Going Home: Evacuation-Migration Decisions of Hurricane Katrina Survivors" (with Craig Landry, Okmyung Bin, John Whitehead, and Kenneth Wilson).
I found the map below interesting. It shows how resettlement of New Orleans has occurred in various areas of the city. From US News and World Report (Click on picture for full view):
HT: All Points Blog