The tides at Saint-Malo
The bay of Saint-Malo knows among the strongest tides in the world. By average tide of medium water (coefficient of 95), the level of the open sea reaches 12m20 and that of the low sea 1m50, a tide (difference) of 10m70! By very high tide (coefficient 115) the sea goes up to 13m25 and goes down to 0.2 m is a difference that exceeds 13 meters.
Knowing that this variation of the sea level takes place in six hours, one imagines the power of the currents generated by the displacement of the colossal mass of water. In 2016, there will be 86 days of high tides, of which 44 will be over 100.
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