As far as I know, that's fiction, hon. (I'm in Baton Rouge) The Superdome had a roof leak, but did not fill up with water. I guess it could have been the couple of outdoor, high school football fields with ampitheatre seating stadiums that had water in them, some of them quite a way up the seats. I think one of them was in St. Bernard Parish, which is one of the parishes where there was a LOT of damage, but not a lot of footage on the news.
Our local news channel/newspaper has a website, and I'm pretty sure there are quite a few pictures on it.
www.2theadvocate.comYou might be able to find what you're looking for there.