Literature study and discussion paper on hydropeaking frequency and fish stranding

Hydropeaking is associated with rapid and frequent changes in stream discharge. This rapid mode of operation is closely linked to the production and demand of energy. However, hydropeaking operation is associated with significant impacts on rivers, including stranding of fish. Stranding has been studied experimentally at the level of single hydropeaks. However, the ecological effects of hydropeaking frequency (multipeaking) have hardly been considered to date, although hydropeaking can influence the choice of restoration measures. Thus, this literature review aims to encompass the topic to the best of our knowledge and to perform initial mortality calculations using existing data to advance the scientific discussion in the field.