physical geography rivers case studies

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  • Created by: charlie
  • Created on: 24-04-14 09:50
Boscastle, North Coast of Cornwall
flood August 2004 // 5 inches rain in hours // 2m river rise // 420m brown willy effect // shale (clay) // 6 weeks witchcraft museum lost // confluence Jordan + Valency
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Upper course Erosion landforms
Interlocking spurs (ashes hollow, little Stretton, Shropshire) // 4 km long // Potholes (river clyde Scotland) // limestone // sandstone // 105 miles long // rapids + High force waterfall (river tees) // dolerite // limestone // 30m wide
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Bangladesh
flood 1998 // 1000mm per day // ice retreat 30m in 30 years // Brah. Gang. Megh. peak flow // 70% land
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Mekong river conflicts
hydropower (Xayaburi dam, Laos 1,260 Mw // 300Mw Don Sahong dam 25m high) // fishing + tourism (1,000 fresh water species // 41 potential endangered // mekong catfish) agriculture (16M metric tonnes rice per year)
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Mekong river sustainable
MRC // surveys carried out // 2008 - 300 people died US $100M // forecasting // mutual benefits // policy makers // community work
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Mekong river multi-use resource
HEP (4,450/17,000Mw currently exploited // steep valleys) // fishing ($1.4 Bn per year // wide) // agriculture (Thai. 20% GDP // 16M metric tonnes per year) // industry (trade value $4.7Bn pass through basin // economy of scale // wide + deep)
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Los angeles river
Flood control + defences // 3000km^2 soft rocks // 60 miles urbanisation // chapparal veg. // 1915 LA flood control sediment from sea
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Jubilee river London
drainage diversion system 2002 // 11.6km long // £84M // protects 4,800 properties // 12,500 people // M4 // thames flood 1947 + 1954 // used to hold 285m^3/s now 515m^3/s
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Sink Beck river, pennine scarp slope
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Card 2

Front

Interlocking spurs (ashes hollow, little Stretton, Shropshire) // 4 km long // Potholes (river clyde Scotland) // limestone // sandstone // 105 miles long // rapids + High force waterfall (river tees) // dolerite // limestone // 30m wide

Back

Upper course Erosion landforms

Card 3

Front

flood 1998 // 1000mm per day // ice retreat 30m in 30 years // Brah. Gang. Megh. peak flow // 70% land

Back

Preview of the back of card 3

Card 4

Front

hydropower (Xayaburi dam, Laos 1,260 Mw // 300Mw Don Sahong dam 25m high) // fishing + tourism (1,000 fresh water species // 41 potential endangered // mekong catfish) agriculture (16M metric tonnes rice per year)

Back

Preview of the back of card 4

Card 5

Front

MRC // surveys carried out // 2008 - 300 people died US $100M // forecasting // mutual benefits // policy makers // community work

Back

Preview of the back of card 5
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