| 21. | The 5 day Otter Trail starts at the Storms River mouth.
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| 22. | Ships from England had to lay at the river mouth at Albany Roads.
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| 23. | Engineers diverted the original river mouth to accommodate Sydney Airport runways.
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| 24. | In the Ainu language " Otoineppu " means " muddy river mouth ".
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| 25. | At the river mouth a sand bar reduces the impact of tidal energy.
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| 26. | The estuary at the river mouth occupies an area of of open water.
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| 27. | There has been discussion of capturing the breeding crabs at the river mouths.
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| 28. | The river mouth is in Weston Bay on the Bristol Channel.
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| 29. | The major production area lies on both sides of the Yellow River Mouth.
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| 30. | The River mouth is in Mersing and goes to the South China Sea.
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