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ADVANTAGES: 1. Once a dam is constructed, electricity can be produced at a constant rate. 2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electricity demand is high.
Millions of people depend on dams to help provide the right amount of water in the right place at the right time. Most dams do more than one job! We fish, swim and boat on about 1 in every three lakes formed by dams.