Hydrology - Case Studies
- Created by: HPG
- Created on: 04-04-24 17:23
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- Hydrology - Case Studies
- River Flooding
- Flood Warnings
- UK - Met Office
- October 2019 - One Week
- 200 Warnings issued over Social Media, Emergency messages and the news
- Reduction of risk to life, allowed time to prepare buildings
- Reduced economic and social damage
- Reduction of risk to life, allowed time to prepare buildings
- 200 Warnings issued over Social Media, Emergency messages and the news
- October 2019 - One Week
- UK - Met Office
- Flood Risk Maps
- UK Gov
- Flood risk map for the whole of the UK
- Allows people to see what areas are at risk
- People can then use it to consider wether to build in areas or buy homes
- Reduced economic damage
- People can then use it to consider wether to build in areas or buy homes
- Allows people to see what areas are at risk
- Flood risk map for the whole of the UK
- UK Gov
- Gauges along rivers
- Boscatle
- After 2004 - 10 new river warning stations along the river
- 24 Hour monitoring
- After 2004 - 10 new river warning stations along the river
- Boscatle
- Flood Warnings
- Human Impact - Hydrological Cyrcle
- Deforestation - Afforestation
- DE - Nepal
- Population Growth = Cutting trees down to provide fuelwood
- Increased water in tributaries of the Ganges
- Increased flooding in the Ganges
- Increased water in tributaries of the Ganges
- Population Growth = Cutting trees down to provide fuelwood
- AF - Ganges
- After flods of 1998 - Afforistation in Yunnan province
- DE - Nepal
- River Flooding River Chaing Jian - China
- Third longest river in the world
- 1998 Flood
- Causes
- Growth of Urban Population
- To counter this factories were built in Rural areas
- Built on floodplains
- To counter this factories were built in Rural areas
- Deforistation in the 1960's
- Canilisation - Sped up movement of water
- Impacts
- 240 Million affected
- 4,000 Drowned
- 14 Million homless
- Factories closed
- To protect Wuhan they purposley flooded farms
- Thousands of farm animal died
- Growth of Urban Population
- Causes
- Deforestation - Afforestation
- Management of River Flooding
- Soft
- Floodplain zoning
- Dont build housing on flood plains
- UK
- Dont build housing on flood plains
- Afforistation - Yangtze Yunnan province
- River Restoration Schemes
- Floodplain zoning
- Hard
- Dams and Resovoirs
- Three Gorges Dam
- Protected 50 Million people
- Millions of Hectares of Farmland
- Generated 10% of China's electricity
- 18,000 Megawatt
- 1.2 Million had to resettle, Cost $38 Billlion
- Flooded 150 towns and cities to build
- Resovoir is heavily polluted with toxins
- Flooded 150 towns and cities to build
- Three Gorges Dam
- Embankment
- Dredging
- Somerset Floods 2013-14
- River Tone and Parrett
- Somerset Floods 2013-14
- Used sediment to raise the enbankment as well
- Dredging
- Dams and Resovoirs
- Soft
- River Flooding
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