| 11. | Construction of a diversion tunnel started in early 1952.
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| 12. | The Swift River Diversion tunnel is in full use, bypassing water around the dam area.
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| 13. | The dam has a diversion tunnel that is.
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| 14. | Water runs from the water intake through the long free-flow diversion tunnel to the delivery chamber.
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| 15. | The original diversion tunnel became the north outlet works, abandoned and sealed in 1958 with bulkheads.
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| 16. | Construction on the dam's diversion tunnel began in October 2008 and was completed in August 2011.
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| 17. | The diversion tunnel to Sun Moon Lake has a diameter of, with a diversion capacity of.
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| 18. | The "'Lowell Creek Diversion Tunnel "'is a flood control project located in Seward, Alaska, United States.
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| 19. | The river diversion tunnel is already there . . . all our previous announcements have been deferment.
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| 20. | The reduced head was maintained while the diversion tunnel was stopped with a huge long concrete plug.
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