| 11. | An ice jam is a dam on a river formed by blocks of ice.
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| 12. | The United States averages 125 million dollars in losses to ice jams per year.
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| 13. | However, an early spring and ice jam destroyed the piers.
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| 14. | It was destroyed by an ice jam eight years later, and rebuilt in 1882.
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| 15. | Peak flows can result from large volumes of water released when ice jams fail.
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| 16. | Water levels rose again Monday, and authorities feared another ice jam could cause more flooding.
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| 17. | There was relatively little scouring of the stream bottoms by ice jams and uprooted trees.
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| 18. | Also, sudden releases from ice jams that abruptly dislodge can send flood waters rushing downstream.
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| 19. | In some areas, ice jams exacerbated flooding, completing the classic anatomy of a wintertime flood.
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| 20. | Flash floods can also occur after sudden releases of ice jams or when dikes fail.
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