Boscastle Flood
- Created by: Arjan Jaiyeola
- Created on: 05-05-14 13:00
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- Boscastle Floods
- Causes
- Human
- Urbanisation causes impermeable surfaces
- Narrow bridges that were an old, stone, arch design.
- No flood control
- Built on a flood plain
- Physical
- Steed sided valley.
- Impermeable soil due to high temperatures.
- Confluence of River Jordan and River Valency
- High temperatures caused quick evaporation, leading to a storm cloud and then precipitation.
- 70mm of rain fell in 2 hours.
- Sudden flash flood
- Human
- Consequences
- Long term
- Tourists stopped going there. 90% of income was from tourism.
- Insurance companies lost money.
- Agriculture was affected.
- Power systems had to be rebuilt.
- 1850 tonnes of debris had to be cleared.
- Short term
- Underground drainage system broke causing sewage to overflow and run into the town.
- 50 cars swept away.
- 440 million gallons of water flowed through the town.
- Six building collapsed.
- Trees, and debris built up behind the bridge acting as a dam.
- Mud piled up inside buildings.
- Roads through the town eroded.
- 120 people air lifted to safety.
- Long term
- Solutions
- Man made culverts were widened to allow more water to flow into River Valency.
- The trees near to the river were cut down.
- The river channel was widened and deepened.
- When?Where?
- 16th August 2004
- Boscastle
- Causes
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