The flooding coincided with a high tide, making the impact much worse. How and when a rainfall event affects the discharge of a river. Rock that does allow water through it. The soils were quite thin and made up of impermeable peat soils. How do steep valley sides affect the flood hydrograph? 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.
There were very few trees to absorb water and slow the amount of water going into the river. Tree management – dead trees were removed to prevent them being swept away, causing blockages under bridges. Removing low bridges and replacing them with wider bridges – this meant large amounts of water could flow freely underneath the bridge and the bridge wouldn’t act like a dam in the flood, vegetation and debris became blocked, creating the effect of a dam. Overall summary A small north Cornish town popular with tourists. All Things That could be improved in italic and Bold.
Lack of any flood control eg; raised banks around river and emergency drainage ditches. Boscastle is also located on a confluence of three rivers.
River landscapes in the UK
How many storms have occurred during one month. Which part of the flood hydrograph shows how long it takes for rainwater to biteskze the river? The bridge acted like a dam and eventually smashed through causing a surge of water up to 5m high.
Rock boscastls doesn’t allow water through it. Water on land – case studies. They increase the peak rainfall. There were vast numbers of subsequent insurance claims. How much rainfall an area has had in one week.
River flooding and management issues – Revision 3 – GCSE Geography – BBC Bitesize
This had an impact on livelihoods and the local economy. People in LEDCs lack education so they do not understand that floods are dangerous. The topography of the land. What of these is a physical cause of flooding? The flooding coincided with a high tide, making the impact much worse.
Geography Case Studies – Water on the Land. Boscastle, Cornwall In Augustthe village of Boscastle saw a month’s worth of rain fall in two hours. 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.
A large quantity of water arrived within a short space of time causing the rivers to overflow. Boscastle casd at the confluence of three rivers – Valency, Jordan, and Paradise.
The drainage basin of Boscastle is steep and impermeable rock. The drainage bosastle has many steep slopes, and has areas ofc impermeable slate causing rapid surface runoff. They increase the lag time.
Red mud and clay from a river bed. British Isles case study: It flooded in Augustwashing cars and buildings into the sea and putting peoples’ lives in danger. Small, low bridges over river trapped material and cars acting as a damn and causing more water to flow around the bridge leading to flooding. What caused the Boscastle flood of ? Tree management – dead trees were removed to prevent them being swept away, causing blockages boscastls bridges. What of these is a human cause of casr People in MEDCs live on lower ground so they cannot return boscastlr very quickly.
Effects Homes, businesses and cars belonging to more than 1, people were swept away. Overall summary A small north Cornish town popular with tourists.
MEDC CaseStudy – Boscastle Flooding
These became saturated so water became surface run-off very quickly. A few old arch bridges got blocked up with the flood debris. How and dase a rainfall event affects the discharge of a river.