I grew up in north Pointe Coupee, which is just north of the Atchafalya Spillway and south of the Old River Control Structure (which are the main two "flood control structures" to keep the Mississippi from "re-channeling" down the Atchafalaya, and they are designed for (as I recall) an amount of water 3X the 1927 flood (largest of historical record). No hurricane is going to drop that amount of water, and those structures are so massive (and low) that they are invulnerable to wind damage.
Thanks, well that's a relief - one disaster scenario not to worry about. Sounds like the reality is going to be bad enough....