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GCSE Geography

Rivers Unit

Case study: The Boscastle Flood

Background information ­ Where and when?

Monday, 16th of August, 2004

Boscastle is a small town on the north coast of Cornwall. 30kms North West of Plymouth.

12:30pm Heavy rain begins to fall

12:39pm Flood Warning Issue

17:00 Floods reach peak…

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It has been estimated that the Boscastle valley's catchment area exceeds 23sq kms spanning inland
to Bodmin Moor where many small rivers spring.

The steep sided valleys that converge down to the sea, known in the trade as "flashy catchments",
act as huge funnels and can produce true flash floods…

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Dredge and strengthen/straighten river channels.

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