Well, I think the old advice about herds applies here....don’t drink down stream from the herd and don’t be downstream from a dam.
I hear ya! I live just over the hills from Bullhead City AZ-which is just below the Davis Dam, which is below the Hoover Dam etc. If the Glen Canyon would let go, Bullhead would get fushed down the way like flushing a toilet. There is no way the Hoover could handle that much water coming at one time from the Glen Dam. And the Davis, is a earthen dam.