The Qiantang River tidal bore, in eastern China, can reach wave heights of up to about 9 m and travel at speeds over 40 km/h as it surges upstream against the river's current — the largest tidal bore on Earth, drawing large crowds who gather along the riverbanks (sometimes dangerously close) to watch it each year, especially at the autumn equinox when it is strongest.
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The Qiantang River tidal bore, in eastern China, can reach wave heights of up to about 9 m and travel at speeds over 40 km/h as it surges upstream against the river's current — the largest tidal bore on Earth, drawing large crowds who gather along the riverbanks (sometimes dangerously close) to watch it each year, especially at the autumn equinox when it is strongest.
The greatest recorded wave height of any tidal bore (a tide-driven wave that travels up a river against the current) on Earth.
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Limits Registry. LR-LARGEST-TIDAL-BORE. Largest tidal bore on Earth. 2026.