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  1. Hydropower Basics | Department of Energy

  2. How Hydropower Works | Department of Energy

  3. Hydropower - Wikipedia

  4. Hydropower explained - U.S. Energy Information Administration

  5. Hydroelectric power | Definition, Renewable Energy, Advantages ...

  6. Hydroelectric Energy - National Geographic Society

  7. Hydropower facts and information - National Geographic

  8. Hydroelectricity - Wikipedia

  9. Hydropower - IEA - International Energy Agency

  10. Hydropower Basics | NREL