That is patently untrue. Have you read APCO's submission where they have studied this very well? There have been any number of tropical storms in the late summer when water levels were well above 483' and APCO has been able to manage the flow through the dam so flooding downstream does not occur. And the comments about lost power generation is likewise uninformed. The generators can only use a certain amount of flow and anything above bypasses them just like every other hydro dam. When APCO loses power generation capacity it is during drought, not as a result of high precip events. Those actually help as the water can be stored in the lake and used later for power generation. Please do yourself a favor and read their studies and submission to FERC and stop fear mongering with abject nonsense.