50,000 cubic feet per second is just incomprehensible. As a fly fisherman, there are rivers in Ohio I will not even try to fish at 400 cubic feet per second. It's just too dangerous. I have been almost been knocked on my a** by 300 cfs!!! The extent of the damage is not that surprising given the force of the water. I am certainly not a water expert, but I imagine 50,000 cfs, being funneled through a relatively narrow area based on the volume of water, could toss a fleet of bulldozers around like they were plastic toys.