Cool Idea.
Pump it out just long enough to doze it flat, salvage the trash and let it flood again.
It couldn't cost any more than the rebuild that will be needed.
It is at least nice to see comments on the MSM that most of the flooded houses will have to be bulldozed and not repaird. Reality is starting to sink in.
There's a lot of formerly valuable things in the houses. Antiques, etc. Some might be recovered, but most is already lost.
And call it Lake Katrina