So these levee's you have down there - they act like or maybe are considered a dyke then? Is the one you mentioned just like a dirt mound with sand bags or something, does it protect you from the Mississippi River flooding?
Sorry - no more questions, I am from Canada and not very familiar with these Levee's down there but have heard them mentioned many times on the news etc.
Hope you don't experience anything worse than what you have now! Best of luck!