Tides are the regular rise and fall of sea levels. The gravitational pull of the Moon and Sun causes the tides. Knowledge of the tides is essential to safely enjoy the seaside. Tides are the rise ...

Tidal Camel Estuary at Rock and low ... high tide level at St Ives is 3.86 mAOD, with a surge of 0.180m above astronomical tide level. Possible wave overtopping could occur within St Ives Harbour ...