[ladyjane]

Why are people allowed to build homes and farm in a natural floodplain?

For the same reason they are allowed to build a city below sea level.

[trumandogz]

The people down in South Louisiana live in area that was designed to be flooded. The people in New Orleans live in a city that was built to stay dry.

[Bernard Marx]

For the same reason they are allowed to build a city below sea level.

Blame the French for that. It was already there when Jefferson made that little Purchase.