تلخیص
Dams are constructed for numerous purposes such as water storage, electricity generation, flood prevention, navigation, supplementation of water to cultivate land, and recreation. Dams have long been considered as a “green” source of energy because they generate power from water without using fossil fuels. However, dams have a several drawbacks too which are not considered by many people. Dams can alter the habitat quality and fish accessibility to their habitats that play detrimental role in population survival. Fish population could also be affected indirectly by change in water quality and discharge regime. In this frame of study, we review some very important dam associated impacts on fish migration and their recommended mitigation measures by combining different aspects. Some novel approaches for mitigating dams’ negative impacts on the fish populations dynamics especially, for downstream habitats have been concluded. The suggestive approached will potentially accommodate seasonal/climatic variations in the reservoir water to be discharged.