The damage to water biological resources in the reservoirs of the Volga-Kama cascade caused by hydro power plants

Hydro structures on rivers adversely affects fisheries, disturbing the conditions of natural reproduction of fish. All hydro power plants cause enormous damage to aquatic biological resources (ABR), especially fish populations. Water works of Volga-Kama cascade of reservoirs are no exception. Therefore, the investigation of the impact of hydro power plants and other hydro structures on ABR in lowland reservoirs and especially the reservoirs of the Volga-Kama cascade is undoubtedly crucial. The purpose of this paper is to analyze the damage to ABR inflicted by HPP cascade mainly the Volga-Kama cascade on the basis of reported data and those of field observations.