How does flooding actually happen? Can’t the water just keep moving

Question

I don’t get how houses/buildings can go under water?

In: 8

Answer 1

In addition to everything else already said, floodings on land mostly happen not only with one river, but with a whole ecosystem. When there was severe flooding in Germany last year, the problem weren’t the big rivers. The flodding happend in the smaller rivers. The region is a bit mountainous, so the rivers are in the valleys with relatively small place. The rivers are meandering. When it rained hard for days, the waterlevel in the rivers kept rising. the streams swelled so much, they completly swept over the meanders, crushing the houses between them. and when wild water with higher water levels and debris, these will hit bridges.