ABSTRACT
Recent findings concerning the effects of hydropower peaking on the riverbed are summarized. A special focus is set on newly discovered lift force variations during unsteady flow. Both constructional and operational mitigation measures for hydropower peaking are stated and evaluated with regard to those effects. In addition to conventional linear flow variations, the possibility of nonlinear hydropeaking is discussed. An experimental investigation on non-linear hydropower peaking is performed. The results prove that progressive flow increases cause less lift force variations than digressive and linear ones, making non-linear hydropeaking a valuable mitigation measure.
