If the floodwater is polluted by sewage, it will contaminate the farmland and make any food grown on it dangerous to eat. The weight of water eroded river banks, damaged gardens and pavements. Weather chart Fig 1. Changes in the climate mean that certain areas are going to experience more frequent and more intense storms that can lead to large floods. We are investing in new ways of predicting heavy rainfall events on a small scale to produce better warnings. The thickest cloud is shown by the brightest white areas on the picture. Large chunks of debris and objects like cars can easily get picked up by floodwater and can easily kill a person should they get hit by the debris.

These factors led to a flash flood which caused over one thousand homes, cars and businesses to be swept away and damaged. A trough is an area of localised rain and thunderstorms. Climate change is a physical factor that could, potentially, be a human factor. This encouraged surface runoff. Very large and powerful floods can even dislodge buildings from their foundations and move them. Download the adaptable Word resource.

boscastle floods case study a level

The River Valency flows leveo through the town and meets the River Jordan at a confluence in the town. Flood water can travel surprisingly quickly and weighs 3 a lot, so people can easily get swept away by floods. The responses to the cae were both short and long term. A flash flood is is a rapid flooding of geomorphic low-lying areas – washes, riversdry lakes and basins. Newer Post Older Post Home. There is more about surface pressure charts in the weather section of the Met Office website.


Using the Teachit Geography template, this sorting exercise provides a framework for investigating cause of, effect of and response to the Boscastle flood. As well as prolonged rainfall, brief periods of heavy rain can also lead to floods. Rivers are dynamic beasts, they change and when they change, so does booscastle they flood.

Also, they support police in arranging evacuation and providing rest centres.

boscastle floods case study a level

Keep me logged in. Lack of any flood control system – in the form of either raised banks around the river channel or emergency drainage ditches to catch overflowed water. Changes in the climate mean that certain areas are going to experience more frequent and more intense storms that can lead to large floods.

Through Bihar sutdy the Kosi River, a tributary to the Ganges. Another economic benefit comes from when a river floods and deposits sediment across the floodplain. It remains over the area for about six hours. Floods devastate village On 16 Augusta devastating flood swept through the small Cornish village of Boscastle. Widening and deepening the river channel – this allowed the river to carry more water. The rainfall rate key shows how the colours in the image relate to the rate the rainfall is falling.

The Boscastle flood of – A case study of cause, effect and response

Precipitation that falls as snow can remain as snow on the ground until it melts. Boscastle, Cornwall In Augustthe village of Boscastle saw a month’s worth of rain fall in two hours. The Environment Agency is responsible for warning people about floods and reducing the likelihood of future floods.


A small flood will have a smaller and more frequent recurrence interval. There was a combination of human and physical causes contributing to a series of effects and impacts.

boscastle floods case study a level

Slide show of photographs of the Boscastle flood. When the snow does melt, large volumes of meltwater will enter the river increasing its discharge and triggering floods. They deal withs some flooded culverts and roads.

Boscastle Case Study

Out of a data set spanning years 5this flood was the 2 nd largest in terms of discharge. Not only this, it can lead to a decline in the local economy as businesses are unable to operate without power or road connections.

Prince Charles, who is the Duke of Cornwall, made a large donation to a fund to help rebuild parts of Boscastle. The rainfall ultimately led to widespread floods in Bihar, an Indian state, that made millions homeless and claimed the lives of hundreds of people.

The big economic effect of a flood is property damage. With a 1 in probability of occurring, Boscastle’s flash flood is considered an extreme weather event.

Land use – The upper part of the village has been developing urbanisation! In Augustthe village of Boscastle saw a month’s worth of rain fall in two hours. Sort statements to show these causes, effects and responses, e. In doing so, it flooded a large portion of Bihar.