BOSCASTLE FLOOD CASE STUDY BBC

A few old arch bridges got blocked up with the flood debris. Slide show of photographs of the Boscastle flood. Physical Impacts Flooding On the day of the flood, about 75mm of rain fell in two hours — the same amount that normally falls in the whole of August. Flooding On the day of the flood, about 75mm of rain fell in two hours — the same amount that normally falls in the whole of August. These became saturated so water became surface run-off very quickly. Human Impacts There was a huge financial cost to the floods. Animation of Satellite images Flash Player required.

A trough is an area of localised rain and thunderstorms. Responses to the flooding John Prescott, the Deputy Prime Minister, and Prince Charles visited members of the emergency services and the local GP surgery, which acted as the emergency centre, in the days following the disaster. Increase in buildings within the drainage basin meant that there more impermeable surfaces which directed water back to the river faster. Prince Charles, who is the Duke of Cornwall, made a large donation to a fund to help rebuild parts of Boscastle. Cars were swept out to sea, buildings were badly damaged and people had to act quickly to survive. The flooding coincided with a high tide, making the impact much worse. Boscastle, Cornwall In August , the village of Boscastle saw a month’s worth of rain fall in two hours.

Weather chart Fig 1. Rain for 12 out of 14 days in August. Rainfall rates of at least 32 mm per hour are being measured. Cars, walls and even bridges were washed away.

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Case Study – Boscastle Floods

Rainfall Radar Animation of boscaztle radar. Steep valley sides – water flowed into the river channel very quickly. Flood management case study: Map of the area affected What happened to cause this event? Tree management – dead trees were removed to prevent them being swept away, causing blockages under bridges.

It remains over the area for about six hours. Satellite image The thickest cloud is shown by the brightest white areas on the picture. Land owners were encouraged to maintain vegetation and plant new trees.

Residents had little time bosacstle react. Both overflowed, and this caused a sudden rush of water to speed down the Valency — which runs through the middle of Boscastle.

boscastle flood case study bbc

We are investing in new ways of predicting heavy rainfall events on a small scale to produce better warnings. About two billion litres of water then rushed down the flooc straight into Boscastle.

Increase in buildings within the drainage basin meant that there more impermeable surfaces which directed water back to the river faster. Many trees had been cut down for farming. Web page reproduced with the kind permission of the Met Office.

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. Cars were swept out to sea, buildings were badly damaged and people had to act quickly to survive. Radar imagery Fig 2. Widening and deepening the river channel – this allowed the river to carry more water.

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

The Environment Agency is responsible for warning people about floods and reducing the likelihood of future floods. A trough is an area bozcastle localised rain and thunderstorms. The rock in the local area is slate which does not allow percolation. British Isles case study: A few old arch bridges got blocked up with the flood debris.

boscastle flood case study bbc

Physical Impacts Flooding On the day of the flood, about 75mm of rain fell in two hours — the same amount that normally falls in the whole of August.

The soils were stufy thin and made up of impermeable peat soils. For example, the red areas indicate that rain is falling at between eight and 16 mm per hour.

Rivers and flooding – Revision 3 – KS3 Geography – BBC Bitesize

A depression brought a thunderstorm on 16 August with over mm of rain in 24 hours. It flooded in Augustwashing cars and buildings into the sea and putting peoples’ lives in danger.

The thickest cloud is shown by the brightest white areas on the picture. Boscastle is also located on a confluence of three rivers.