| 1. | Each penstock feeds a column of water to its own turbine.
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| 2. | Gravity causes it to fall through the penstock inside the dam.
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| 3. | The two extra penstocks are for an additional generator if needed.
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| 4. | The waters between the two lakes are conveyed by a penstock.
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| 5. | Water from Lake Karapiro runs through the penstocks to three Kaplan turbines.
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| 6. | Temporary flumes transported water through the powerhouse from the two remaining penstocks.
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| 7. | The penstocks underwent a major inspection and refurbishment in 2003.
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| 8. | A single penstock feeds water to a power station downstream.
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| 9. | It includes two penstocks, each diameter and controlled by two by gates.
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| 10. | Penstocks are also used in mine tailings dam construction.
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