The rare phenomenon of upstream river waves

They look like tidal bores, but they’re not caused by tides. Upstream river waves are swells, or wave trains, that form in the ocean and travel up the river. Tidal bores are a spectacular natural phenomenon that can be forecasted, and are often ridden by surfers who enjoy the longest waves of their lives. But with upstream river […]

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They look like tidal bores, but they’re not caused by tides. Upstream river waves are swells, or wave trains, that form in the ocean and travel up the river. Tidal bores are a spectacular natural phenomenon that can be forecasted, and are often ridden by surfers who enjoy the longest waves of their lives. But with upstream river waves, it’s the ocean that pushes swell up river mouths for longer or shorter distances, and against the direction and flow of the natural river current.

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The rare phenomenon of upstream river waves

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