Hydroelectric power does not solve the problem of fish migration, but endangers many migratory fish. At the same time, due to the need to store water for hydropower generation, large areas of downstream water resources have been depleted for a long time, leading to the collapse of water conservation facilities. water, serious damage to the ecological balance and a strong decline. in the number of additional freshwater fish. At the same time, this also led to flood drainage facilities becoming inactive, leading to terrible flooding during heavy rains.
Of course, the benefits brought by hydroelectricity are enormous, but it is totally detrimental to the ecological balance.
Hubei was once known as the province of a thousand lakes. Crop irrigation now depends on groundwater in many places, and fishwild animals have declined by more than 90%. All this is the result of the Three Gorges hydroelectric power station.