The River Severn is at the head of the triangular Bristol Channel and narrows rapidly as you go up the river. When the tide comes in, it is greatly compressed and produces the Severn Bore, a tidal wave up to 6ft (2m) high which rushes about 20 miles (32km) up the river to Gloucester at a speed of up to 10 mph (16 km/hr). It is best at the spring tides, i.e. at full and new moons, and is now popular with surfers and canoeists.
To see an Ordnance Survey map click at THIS LINK
|Previous entry||Next entry|
|Gazetteer Index||Main MacTutor index|
An extract from The Mathematical Gazetteer of the British Isles created by David Singmaster
The original site is at THIS LINK