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The source of the River Severn is in moorland in mid-Wales. The area receives excessive rainfall due to depressions from the Atlantic. The Severn swiftly grows and forms a V-shaped valley. The river transports a large load, which allows rapid erosion to take place. Waterfalls and gorges have been formed in the upper course. As the gradient decreases, meanders and oxbow lakes can be found. As the river nears the lower course, flooding is a threat.
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First broadcast:
21 February 2008

Classroom Ideas

Can be used to get the pupils to write a description of how a specific river feature is formed, e.g. a waterfall or ox-bow lake.

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