BOSCASTLE FLOOD CASE STUDY BBC

Prince Charles, who is the Duke of Cornwall, made a large donation to a fund to help rebuild parts of Boscastle. This link opens in a new window. Floods devastate village On 16 August , a devastating flood swept through the small Cornish village of Boscastle. Both overflowed, and this caused a sudden rush of water to speed down the Valency — which runs through the middle of Boscastle. Map of the area affected What happened to cause this event? Cars were swept out to sea, buildings were badly damaged and people had to act quickly to survive. Residents had little time to react.

Residents had little time to react. Slide show of photographs of the Boscastle flood. A depression brought a thunderstorm on 16 August with over mm of rain in 24 hours. There is more about surface pressure charts in the weather section of the Met Office website. Physical Impacts Responses to the flooding What happened to cause this event?

The Environment Agency is responsible for warning people about floods and reducing the likelihood of future floods. It remains over the area for about six bosacstle. Weather chart Fig 1. Rainfall rates of at least 32 mm per hour are being measured.

The rock in the local area is slate which does not allow percolation. Map of the area affected What happened to cause this event? Slide show of photographs of the Boscastle flood. Radar imagery Fig 2. A line of very heavy rain starts at about 1 p.

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boscastle flood case study bbc

Land owners were encouraged to maintain vegetation and plant new trees. Flood management case study: Prince Charles, who is the Duke of Cornwall, made a large donation to a fund to help rebuild parts of Boscastle.

Web page reproduced with the kind permission of the Met Office.

boscastle flood case study bbc

It flooded in Augustwashing cars and buildings into the sea and putting peoples’ lives in danger. The Environment Agency has carried a major project to increase flood defences in Boscastle, with the aim of preventing a similar flood happening again.

Tree management – dead trees were removed to prevent floov being swept away, causing blockages under bridges. The bridge acted like a dam and eventually smashed through causing a surge of water up to 5m high. The flooding also had several other key impacts on Boscastle and its inhabitants.

There is more about surface pressure charts in the weather section of the Met Xtudy website. These became saturated so water became surface run-off very quickly.

Case Study – Boscastle Floods

The flooding coincided with a high tide, making the impact much worse. The drainage basin of Boscastle is steep and impermeable rock.

Very heavy rain fell in storms close to the village, causing two rivers to burst their banks. Destruction of bowcastle, businesses and gardens Floodwater gushed into houses, shops and pubs.

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It is a warm and moist tropical maritime air mass. The church was filled with six feet of mud and water. In Augustthe village of Boscastle saw a month’s worth of rain fall in two hours. Increase in buildings within the drainage basin meant that there more impermeable surfaces which directed water back to the river faster.

Satellite image The thickest cloud is shown by the brightest white areas on the picture. Rainfall Radar Animation of rainfall radar. Both overflowed, and this caused a sudden rush of water to speed down the Valency — which runs through the middle of Boscastle.

Flood management – CCEA – Revision 2 – GCSE Geography – BBC Bitesize

The weight of casee eroded river banks, damaged gardens and pavements. Animation of rainfall radar. Boscastle is a small coastal settlement in the south west of England. A depression brought a thunderstorm on 16 August with over mm of rain in 24 hours.

About two billion litres of water then rushed down the valley straight into Boscastle.