11. Irvine Harbour is home to a unique and distinctive building which marked the tide level . 12. In it he recommended regularly comparing the height of the dikes with the high tide level . 13. The wharf was close to the river bank, and was only accessible at higher tide levels . 14. Tide levels in the lake are damped to about a third of the lagoon tidal levels.15. The weather service is predicting a " life-threatening " 10-to 20-foot storm surge above normal tide levels . 16. It inhabits isolated areas on sandy bottoms below the low tide level down to a depth of. 17. It is found around low tide levels and deeper, under rocks and wandering over seaweed in pools. 18. These snails live in intermediate habitats at high tide level , on mud, in protected estuarine and coastal areas. 19. Surges were running about 9 to 11 feet above normal tide levels Wednesday, the National Weather Service reported. 20. It extends 500 metres into the sea and 100 metres from the high tide level onto the land.
