My comment was about the old days. I was last there in 2014, and yes the place is being built up throughout the whole valley.
Valleys can be flooded just by their nature. Where I live the valley below used to flood regularly, then they built a lake with a big dam,
so that's not as much of a problem today. I am way up at the top of the hills so it never bothered us except for driving into the village. We
sometimes had to take the back way. I suppose if some houses get flooded in your valley, the folks will try to blame the railroad, eh!!!
Greg