Tidal race

Tidal race or tidal rapid is a natural occurrence whereby a fast-moving tide passes 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 Corryvreckan and the Saltstraumen maelstrom, or an underwater obstruction (a reef or rising seabed), such as is found at the Portland Race.

In extreme cases, such as Skookumchuck Narrows in British Columbia, through which tides can travel at more than 17 knots, very large whirlpools develop, which can be extremely hazardous to navigation.

Lunga and the Grey Dog
View to Lunga from Scarba, across Scotland's "Grey Dog" tidal race.

Notable tidal races

See also


  1. ^ "Nature"
  2. ^ The-Bitches.co.uk
  3. ^ UK Riversguidebook
  4. ^ CanoeWales Archived 2014-09-11 at the Wayback Machine.
  5. ^ "Bitches and Tides"

This page is based on a Wikipedia article written by authors (here).
Text is available under the CC BY-SA 3.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.