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