Should a natural dam hold the amount of water beyond its capacity, it would crumple easily.Several problems there are with the dam,Collapse?A normal dam is constructed to resist collapsing even if it holds water beyond the capacity limit to a certain point.One would not expect a natural dam to be of such construction.It does.but the priority is that it might collapse.Once that happens, an enormous amount of water and sediments may flow down the river, turning the landscape upside down.
Contains some liberal translation. Please check.That would surely not leave the village safe either.