In my country, you just can't build or sell houses in flood zone. What happened nearby (20km away from my house) is a mayor, who was also a developer, decided t

In my country, you just can't build or sell houses in flood zone. What happened nearby (20km away from my house) is a mayor, who was also a developer, decided that an area 4-5m above sea level (with high tide at +3.5m with coefficient 70 I think, so +6m at 120) was "protected" by the new 3m tall dike/embankment (not sure about which word to use in english). Scientists and experts told it wasn't enough, he built houses anyway, i think the oldest house lasted ten year and the most recent five until a tempest came, with a high tide. 3m of water in the area (that couldn't go out because of the dike), houses were fully automated so people couldn't pass through the electric roller shutters to leave there home and go on the roof, and i think half the people died. The mayor was still reelected.