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. Tree management – dead trees were removed to prevent them being swept away, causing blockages under bridges. The pictures show cloud forming over Boscastle at about 1 p. The rock in the local area is slate which does not allow percolation. Boscastle, Cornwall In August , the village of Boscastle saw a month’s worth of rain fall in two hours. This link opens in a new window.

The bridge acted like a dam and eventually smashed through causing a surge of water up to 5m high. A large quantity of water arrived within a short space of time causing the rivers to overflow. Cars were swept out to sea, buildings were badly damaged and people had to act quickly to survive. Destruction of houses, businesses and gardens Floodwater gushed into houses, shops and pubs. It flooded in August , washing cars and buildings into the sea and putting peoples’ lives in danger.

boscastle flood case study bbc

Increase in buildings within the drainage basin meant that there more impermeable surfaces which directed water back to the river faster. The rock in the local area is slate which does not allow percolation. Bcb Environment Agency has carried a major project to increase flood defences in Boscastle, with the aim of preventing a similar flood happening again.

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The pictures show cloud forming over Boscastle at about 1 p. Caase flooding also had several other key impacts on Boscastle and its inhabitants. A line of very heavy rain starts at about 1 p.

Animation of rainfall radar.

boscastle flood case study bbc

There is more about rainfall radar in the weather section of the Met Office website. Widening and deepening the river channel – this allowed the river to carry more water.

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A line of convergence formed near the coast line, where air moving in almost opposite directions collides, this helped to increase the rate of ascent and produced very heavy rain. Cars were swept out to sea, buildings were badly damaged and people had to act quickly to survive. 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 xase disaster.

A few old arch bridges got blocked up with the flood debris. The bridge acted like a dam and eventually smashed through causing a surge of water up to 5m high. Boscastle is also located on a confluence of three rivers.

Human Impacts There was a huge financial cost to the floods.

boscastle flood case study bbc

The rainfall rate key shows how the colours in the image relate to the rate the rainfall is falling. 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 weight of stduy eroded river banks, damaged gardens and pavements. 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. Tree management – dead trees were removed to prevent them being swept away, causing blockages under bridges.

Rainfall rates of at least 32 mm per hour are being measured. Map of the area affected What happened to cause this event? This limited interception and water went straight into the river channel. In Augustthe village of Boscastle saw a month’s worth of rain fall in two hours. The soils were quite thin and made up of impermeable peat soils. It is a warm and moist tropical maritime air mass.

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Case Study – Boscastle Floods

Prince Charles, who is the Duke of Cornwall, made a large donation to a fund to help rebuild parts of Boscastle. About two billion litres of water then rushed down the valley straight into Boscastle.

Very heavy rain fell in storms close to the village, causing two rivers to burst their banks. The wind is blowing anticlockwise about the low pressure area, so the air is arriving into Boscastle from a bosdastle direction. The thickest cloud is shown by the brightest white areas on the picture. Many trees had been cut down for farming. Raising the car park and using a permeable surface – this allowed cars to be much higher and so they were less likely to be swept away.

Fortunately, nobody died — thanks largely to a huge rescue operation involving helicopters — but there was millions of pounds worth of damage. Boscastle, Cornwall In Augustthe village of Boscastle saw a month’s worth of rain fall in two hours.