| 11. | The Sieve tributary and spillway at Pontedera are among other developments.
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| 12. | In 1965 the spillway was lowered by to increase flood capacity.
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| 13. | The river exits the lake via a spillway from the mouth.
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| 14. | There is the usual perpendicular crossing creating the low head spillway.
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| 15. | The spillway is similar to an overflow drain in a bathtub.
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| 16. | Water flows out of the spillway to prevent overtopping the dam.
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| 17. | The dam's spillway is located south of the dam.
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| 18. | Each of the dams are equipped with a chute staircase spillway.
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| 19. | The last feature is a spillway drop into the lower pool.
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| 20. | The spillway consists of a reinforced concrete channel with 18 sections.
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