Moreover, analysing case study answer frequency final result curve FN it may be noticed that case study solution frequency of fatality injuries in Hydropower is less than Coal, LPG and Oil recognize to below 100 fatalities per event, however when case study solution number of fatalities augment over 1000 death then Hydropower is more likely to occur than Coal or Oil energy man severe accidents. This facts give a transparent indication about case study solution severe damage that this generation may cause when poor design occurs and take emergency actions over an overflow condition or Dam failure is absolutely difficult to obtain. The best actions to take is PREVENTION by high designs, tracking and manage, choice of perimeter safety area of case study solution group and unlock channels of rivers in case of emergency overflow. In case study solution case of environmental issues such as fish life affection, a good strategy of re place of fish could reduce case study solution environmental consequences. To concluded, I help case study answer hydropower generation because more environmental friendly era than unconventional oil and gas, but good designs are required. Burgherr P.