LEVEES

I know they says that after all the years of holding back the water, what is the point? Well, New Orleans is just a city that's surrounded by water. What about a whole country that its sole survival is based on holding back the tide? The Netherlands, aka, Holland is famous for the windmills seen near the shore, but those windmills are pumps, keeping the water from reclaiming the country. There are parts of Holland that is 7 meters below sea level.

HOLLAND

So, when you ask why did they build the city there or should they rebuild in an area that is a flood plane, Just remember, New Orleans has been there since the French owned the territory in the 1600's.