- Tidal race
Tidal race (or tidal rapid) is a natural occurrence whereby a fast moving
tidepasses through a constriction resulting in the formation of waves, eddies and hazardous currents. The constriction can be a passage where the sides narrow, for example the Gulf of Corryvreckanand the Saltstraumen maelstrom, or an underwater obstruction (a reefor rising seabed), such as is found at the Portland Race.
In extreme cases, such as
Skookumchuck Narrowsin British Columbia, through which tides can travel at more than 17 knots, very large whirlpools develop, which can be extremely hazardous to navigation.
Notable tidal races
Skookumchuck Narrowsin British Columbia, Canada
The Bitchesin Wales, United Kingdom
Falls of Lorain Scotland, United Kingdom
* Portland Bill on the
Isle of Portland, England, United Kingdom
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