https://padlet.com/ldobbe1/Wateronland_casestudies en-us 2016-05-13 14:00:40 UTC 2025-11-19 02:23:11 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/crane_yellow.png ldobbe1 https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110770822 -north coast of Cornwall 
-most of the rain fell over a 5 hour period.
-peak intensities were in excess of 30mm(hr (0.5mm per minute)
- a months rain fell in 2 hours
- boscaslte catchment area exceeds 23sg Kim's spanning inland to Bodmin moor where many small river springs are 
- steep sodded valley
-the harbour area is on lowly img land beside the sea and is the flood plane was two rivers.

-cars were swept out to sea
-bridges were washed away
-people clung to rooftops and trees 
- emergency workers mounted a huge operation to rescue residents and holiday makers along a 32 km stretch of north Cornwall coast around boscaslte.

- operation lasting from mid afternoon to 2:30 am, a fleet of 7 helicopters rescued 150 people clinging to rooftops and tees. No injuries (major) or deaths reported 

- 90% of boscaslte economy from tourism 
-after flood more than 20 tourist accommodations had to shut down 
- as 2/3 of business done during 6 week summer holiday the results were even more devastating as 3 weeks were left of the summer holidays.

-- timing is important 
-as it occurred during the day people were awake and could be rescued
-if it happened at night people would have been asleep and there would of been a higher chance of serious injuries and even deaths

- freak event only happens once in 400 years
-controlled developments on flood plains
-bigger culverts on both rivers
-flood warning systems 
-traffic light advice on sever weather]]> 2016-05-13 14:02:28 UTC https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110770822 ldobbe1 https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110770878 Bangladesh, 2004: 

Background information- 
-70% of Bangladesh is less than 1m above sea level.
-Bangladesh is in the south part of Asia and is bordered by India and Burma.
-The population is 139261860.
-They have a 56% literacy rate and a unemployment rate of 35.2%.
-Average GDP of $380 dollars per person.

Causes of flooding(physical)- 
-Most of the country is low lying flood plain as 70% is less than 1m below sea level.
-10% of the land is is made up of lakes and rivers.
-Snow melt from the Himalayas occurs in spring and summer.
-Bangladesh also experiences heavy monsoons.
-Tropical storms lead to heavy rain and costal flooding.
-The main cause of the fooled was the above average and prolonged rainfall which meant that all 3 rives had their peak flow at the same time.

Causes of flooding (human)-  
-Deforestation in Nepal and the Himalayas increased surface runoff and increases deposition and flooding down stream.
-Urbanisation occurred on the flood plain leading to impermeable surface and increased frequency of flooding.
-Dams being built in India has increased the problem of sedimentation in Bangladesh.
-Global warming has increased the sea level and lead to increased levels of snowmelt.
-Poorly maintained levees leak and collapse in times of high discharge.

The effects - 
- 230,000 people killed
-7 million homes destroyed
-25 million people made homeless 
-A shortage of drinking water and food
-Diseases such as bronchitis spread rapidly
-When the water receded it left field of rotting crops and destroyed bridges and homes.
-2 million tonnes of rice was destroyed
-Half a million cattle and poultry was lost 
-57% of land destroyed by flood water.

The response- 

Heavy reliance on short term emergency aid
Assistance is provided by the UN, governments and charity's 
Problems with distribution as so much of the land is under water
As flood water retreats it is easier to set up medical centres, distribute supplies and help rebuild homes and restarting economic activities.]]> 2016-05-13 14:02:45 UTC https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110770878 ldobbe1 https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110770922 -north east if England (Northumberland)
-rivers (Tyne and derwent)
- location (Hexham and Newcastle upon Tyne)
-built in. 1975 and 1981

Why it was built:
-annual rainfall high 
-few people lived in valley 
-limited number of wild habitats 
-land was poor quality farm land 
-river Tyne has large and wide base and steep sides 

Water transfer:
-flows down river typing 
-pipped from reddinmill to eggkastin 
-flows down river tees
-pipped from parkingtin  to Newton reservoir 
-transported via tanker tone cup reservoir 

Negative impacts:
-changes to landscape eff eats plants and animals 
-more potential errosiinbdownstream

-dispatched famikys

-too monoculture 
- land lost (2,700 acres)]]> 2016-05-13 14:02:59 UTC https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110770922 ldobbe1 https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110861881 - constructed at yichange on the river Yangtse.
- dam should reduce among of flooding from 1in 10 to 1 in 100

-in 1988 floods in China caused chaos, they left clay sediments on fields making the u less fertile and left $500 million in damage 
-communist Chinese government decided to huild the Dam to control floods
-biggest dam in the world with a length 2335 m and a height of 185 m 

Economic impacts :
-prevents flooding and provides hydroelectric power 
-  power produced equal to 18 nuclear power stations
-produces  14% of China's power 

Environmental impacts:
- 100 river doulphins left and dam destroyed habitat .
-60,000 hectares of fertile farmland flooded 

Social impacts :
-828 religious cultural and archaeological sites flooded including the Buddhist carvings 
-66% of wanxian city will be flooded
-900 factories and 250,000 people had to move. They were displaced.]]> 2016-05-14 06:26:38 UTC https://padlet.com/ldobbe1/Wateronland_casestudies/wish/110861881