| 1. | The Elevation of the land is one metre below the high tide level.
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| 2. | Within the tidal flat system, the supratidal zone lies in a very high tide level.
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| 3. | The danger is genuine, since high tide level would have been well above their heads.
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| 4. | In it he recommended regularly comparing the height of the dikes with the high tide level.
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| 5. | These snails live in intermediate habitats at high tide level, on mud, in protected estuarine and coastal areas.
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| 6. | It extends 500 metres into the sea and 100 metres from the high tide level onto the land.
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| 7. | It is usually found on the edge of forests, but also at the high tide level close to mangroves.
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| 8. | The maximum elevation on the island is no more than 10 feet ( 3 metres ) above the high tide level.
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| 9. | In the 1931 earthquake a tsunami hit the river mouth, leaving fish up to 15 metres above the high tide level.
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| 10. | The site was attractive because of the wide average-range between low and high tide levels, with a maximum perigean spring tide range of.
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