| 11. | Over time, lagoons may silt up, becoming salt marshes.
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| 12. | Cars were trapped in silt up to their windows.
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| 13. | Over time the lagoon is likely to silt up.
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| 14. | The discharge silts up streams and kills fish.
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| 15. | Over time it began to silt up and in the 19th century it was filled in.
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| 16. | The inlet tended to silt up, and had to be dug out again every few months.
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| 17. | The pipe can get squashed, silt up with rubbish or buckle from ground movement, he said.
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| 18. | Along its course, the Pilcomayo silts up and splits into two main branches, North and South.
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| 19. | In the 15th century, The Haven began to silt up, preventing ships in the Humber from docking.
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| 20. | It is expected that the continuous input of sediment into the lake will silt up the lake.
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