You're drowning in desperation. Their basketball coliseum likely holds at least 10,000 just in the seats, plus more on the floor. Plenty more fit in the athletic dept gyms. More in the student rec facilities, which if it is like most universities has several indoor raquetball courts, gyms, a track, and weight room. That's easily 20-25,000 before starting in with university's numerous classrooms. And of course you forgot my suggestion of using local schools and govt bldgs, of which only a fraction are used for local evacuees. Nor did you remember that LSU could be used as a staging area to transport overflow to other areas of the state(using buses and trains in the 2nd 24 hours.)
The superdome holds over 60,000 yet in an emergency situation they just have 25,000.
A hurricane is not like a tornado that is here and gone in 15 minutes. You expect those evacuated to sit on the gym floor for at least a week?
As I've tried to point out, you just can't cattle people and cram them into any nook or cranny you can find. This is especially true for long periods of time and in situations where the evacuation site has been hit hard by the storm as well and has it's own refugees to deal with.
You and some of the other women on the thread are probably good freepers, but you're just being totally unrealistic.