The Negative Effects Of Hydroelectric Dams

With the rapid growth of renewable resource technology have become increasingly essential, the electricity demand of human could be met. Hydroelectric dam is a power plant which has the strong flow of energy generated by the water level difference. Hydroelectric power is the most widely used mode of renewable energy. The power generation costs are not expensive and it generate power through the flow energy without helps from other energy resources. However, hydroelectricity brings many negative influences on animals living environment and also impacts water environment pollution. In some places, building hydroelectric dams will potential influence with extinction of animals because of river’s changes. According to Lin (2011), he states that dam construction will bring some negative effects on river basin, river flux, flooded area, river species, and river ecosystems (p. 1). These changes will produce irreversible harmful factors to animals who live in an affected river. Animals living environment may be injured by hydroelectricity dams. The completion of the hydroelectric dam or reservoir may will cause a large number of wild animals and plants are drawing to death or even become extinct in the future. For terrestrial creatures, effects

The construction of hydroelectric dams, especially the construction of large dams in the river, is a comprehensive engineering project. It often requires several years or even ten years to complete. On the one hand, during the construction period, intensive engineering construction will produce a large number of engineering and living waste, solid waste, and wastewater. On the other hand, with the completion of the dam, the huge construction team will leave, so the construction personnel generally will not spend a huge amounts of money to build large-scale solid waste and wastewater treatment