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Bore (EAGRE a sudden influx)

or EAGRE, a sudden influx of the tide into the estuary of a river from the sea, the inflowing water rising to a considerable height and advancing like a wall against the current. The most celebrated bores in the Old World are those of the Ganges, Indus and Brahmaputra.

The last is said to rise to a height of 12 feet. In some rivers in Brazil it rises to the height of 12 to 16 feet. In Great Britain the bore is observed more especially in the Severn, Trent, Wye, and Solway.