Severn Bore
A curious phenomenon associated with the lower reaches of the Severn is the tidal bore, which forms somewhat upstream of the port of Sharpness.
It is frequently asserted that the river's estuary, which empties into the Bristol Channel, has the second largest tidal range in the world—14.5 metres (48 ft), exceeded only by the Bay of Fundy. However a tidal range greater than that of the Severn is recorded from the lesser known Ungava Bay in Canada. During the highest tides, the rising water is funnelled up the Severn estuary into a wave that travels rapidly upstream against the river current. The largest bores occur in spring, but smaller ones can be seen throughout the year. The bore is accompanied by a rapid rise in water level which continues for about one and a half hours after the bore has passed.
Read more about this topic: River Severn
Famous quotes containing the words severn and/or bore:
“On Wenlock Edge the wood’s in trouble;
His forest fleece the Wrekin heaves;
The gale, it plies the saplings double,
And thick on Severn snow the leaves.”
—A.E. (Alfred Edward)
“So we may never
Again feel fully confident of the stratagem that bore us
And lived on a certain time after that. And it went away
Little by little, as most things do. To profit
By this mainstream is today’s chore and adventure.”
—John Ashbery (b. 1927)