Damns on Wildlife and the Environment Background
One of the issues resulting from civilization and urbanization is that most of the places humans chose to locate, for reasons of convenience, agriculture, transportation, and economic independence, have been near water. Dams provide hydroelectric power, help control floods, and make rivers navigable. Levees are quite similar to dams in their purpose, although they are primarily build to restrict water in times of high flow – and for the majority of time are not under water.The environmental impact of dams and reservoirs is increasingly receiving more attention as the global demand for water and energy increases, and the number and size of reservoir and damn projects increase. In general, the damming of a river creates some sort of a reservoir of water upstream from the dam. The dam project has four major environmental impact issues: upstream impacts, downstream impacts, effects beyond the reservoir, and then global or macro impacts.