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Hydropower , or Hydroelectric power , contains 6 major parts .
A Dam
THis controls flow of water and increases elevation for a higher water wall . Moving water , by power of gravity , is created by making a reservoir above the turbines . This dam contains floodgates which it can open and close to vary the amount of water entering the penstock .
A Penstock
A penstock is a large pipe that channels water from the dam to the turbines .
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