Dams change the way rivers function. They can trap sediment, burying rock riverbeds where fish spawn. … Dams that divert water for power and other uses also remove water needed for healthy in-stream ecosystems. Peaking power operations can cause dramatic changes in reservoir water levels.
How do dams reduce flooding?
Dams are often built along the course of a river in order to control the amount of discharge. Water is held back by the dam and released in a controlled way. This controls flooding. … Sediment is often trapped behind the wall of the dam, leading to erosion further downstream.
PRODUCTION OF ELECTRICITY FROM WATER ENERGY
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