re: What will happen to the Atchafalaya spillway?

They'll find higher ground somewhere, but unfortunately some will die. A lot of deer just gave birth, so a lot of the fawns probably won't make it. The water will come pretty slow, giving the wildlife a good bit of time to GTFO.

You'll probably see a lot of dead deer on the side of the roads nearby.

Here's a pretty cool picture of the locks opened. I have a camp at Old River so I'm used to seeing one side flooded, but not the other...
LINK


Good map of the spillway...
LINK