tidal bore waves

This unfinished page contains text from either the 2003 or 2005 print version of Encyclopedia of Surfing. An updated version, with more photos, is coming soon.

Tidal bore waves are formed in a small number of ocean-connected rivers worldwide, and take shape when a higher-than-average tide funnels through a rivermouth into a narrowing inland passage. The best-known surfing tidal bores are found in Britain's Severn River, the Amazon in Brazil, and the Dordogne River in France. Equinox tides generally produce the biggest bore surges, and a breaking bore wav...

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