Alternative strategies for managing future water supplies
- Created by: Amy Brown
- Created on: 09-06-14 21:28
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- Alternative strategies for future water supplies
- Restoration
- At a local scale this can involve restoring meanders, replanting vegetation and using sustainable methods to manage water courses for people and the environment
- Case Study: Restoring the Aral sea
- In 2007 Kazakhstan government secured a $126 million loan from the World Bank to help save the northern part of the Aral Sea
- The government has already built a dam to split the sea into 2 parts and the new loan is used to build a dam to bring the water back
- Fisherman have been able to resume fishing
- Rain has returned
- The southern part of the sea is still shrinking
- The waters from the Amu Darya and Syr Darya are controlled by other countries
- Water Conservation
- Involves reducing the amount of water used rather than truing to increase water supplies
- In the UK around 22% of water does not reach the end user due to leakage
- Reducing domestic consumption
- Installing water meters
- Reducing the amount of water used in lavatory cisterns
- Planting drought resistant plants/crops
- Using grey water to flush the lavatory or water the garden
- Reducing industry consumption
- Installing more efficient systems to reduce water costs
- Agricultural irrigation=use of micro-irrigation techniques using drip irrigation
- Role of technology in solving future problems
- Desalinisation - provides 70% of Saudi Arabia's water but it is the most expensive option
- USA uses reverse osmosis membrane technology to filter salt from brackish water
- In developing countries intermediate technology is more appropriate e.g. water collection
- Key Players
- Political - International Organisations
- Economic - World bank, governments etc.
- Social- Individuals, residents, farmers etc.
- Environmental- Conservationists, WWF
- Restoration
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