Research effort is needed to give answers effectively to challenges during project realization, operation and maintenance. Problem solutions should be sustainable and economically feasible in a wide range. The following five topics will be discussed: T1 - Climate Changes Reservoir Operation, T2 - Permission and Safety Assessment, T3 - Dam and Foundation Sealing, T4 - Caverns and Power Water Ways, T5 - Stability of Reservoir Slopes - detail akce