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HEP- The water acts as a power source which is used to turn a turbine. This then turns a metal shaft in an electric generator that produces the electricity. The dam is built to hold the
water, and create pressure. The turbines are inside the walls of the dam.

Page 2

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Fish populations can be impacted if fish cannot migrate upstream past impoundment dams to spawning grounds or if they cannot migrate downstream to the ocean. Upstream fish
passage can be aided using fish ladders or elevators, or by trapping and hauling the fish upstream by truck. Downstream fish passage is…


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