Does anyone know if there are any overhead pictures (satellite or airborne) avaliable taken after Katarina went through? I'm concerned about how much of the Mississippi delta was eroded, as well as what happened to shipping channels and similar geomorphic features.
All that are available right now, at least to the public, are aerial shots from helicopters over the cities. I don't believe there is anything like what you are looking for presently available, however, and it might be a little time before something like that does become available.