Mike,
ALL of the older cemeteries in New Orleans were flooded. I can tell you that in Slidell, of much higher ground, that I saw above ground crypts in the ditches across the highway from where I lived. Many, but not all, of the old crypts are uprooted in New Orleans, and I can only hope that the restoration efforts include repairing/remounting them. Jackson Barracks, in the 9th Ward, received flooding as well.
Terry