@GreenFire I live in a city where the rivers flood every year almost without fail. One river was actually redirected UNDERNEATH another river to crest a flood way to protect the city.
The flood plain areas were mostly all farm land that has now become sparsely populated communities.
Since I can remember there have been groups fighting to have their homes on the flood plains (houses built after the floodway was built) rebuilt/protected/etc due to floods.
People = not smart.