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8 Cards in this Set
- Front
- Back
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Boscastle
What where the physical geography (structure and form of the land) causes of the flood |
bodmin moor is made of impermable rock granite which reduces percolation
the valley sides are very steep dropping 100ft at its source to sea level in only 3.5 miles upper course of the valley and catchment area covered in grassland - reduce interception |
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Boscastle
How did the weather causes of the flood |
hurricane alex remits from 2 weeks before came from america .
Stormy antecedeant conditions meant soil saturation 16th was a very hot day which coupled with moist warm air from the sea created a large quanity of warm moist air travelling upwards quickly. |
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Boscastle
What where the human causes of the flood |
physical barriers in the form of bridges which acted as a dam causing water to back up to a height of 1m
sewer and drainage system were old and had little capacity and became blocked under the large surge of flood waters causing the backing up of water |
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Boscastle
how did the human management of the land cause the flood |
deforested bodmin moor and removed hedges for farming - grazng grassland
located in a steep narrow vallay side at the point of maxium discharge with no flood defence |
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Boscastle
what were the social impacts of the flood |
people were trapped and 100 people were evacuted by 7 helicoptors
long term stress and psychological impacts -when it rains again people become traumitised people left homeless - lost their possessions |
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Boscastle
what were the economic impacts of the flood |
58 properties flooded- 4 were demolished e.g visitor centre
84 wrecked cars found in harbour with many more still out at sea cost the council 2m in clean ups insurance companies paid 15 million to repair homes |
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Boscastle
how was trade impacts of the flood |
tourism was badly affected ( 90% of income comes from tourism) caused massive lossas attractions (witchcraft museum) were destroyed and people scared to come again
damage to harbour meant a restriction on fishing |
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Boscastle
what were the enviromental impacts of the flood |
burst sewage main meant much of the town was inaccessable due to health and safety reasons for a few days
costal pollution from fuel tanks affected harbour and local sea roads blocked by water for up to 8 hours and then by debris |
