Global distribution of water Flashcards

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1
Q

how do dams and reserviors increase water supply

A

surplus fills reservoir which can be released in a deficit

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2
Q

how does water diversion increase water supply

A

dams built to raise rivers water level and redirect water to chosen location
less disruptive than storage dams
can produce hydroelectric power

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3
Q

what are the advantages of the china water transfer scheme

A

100 million people benefitted
provides water for over 20 cities
prevents over abstraction

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4
Q

what are the disadvantages of the china water transfer scheme

A

large areas flooded which destroys habitats
may increase water stress in the stress
water only available in urban areas

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5
Q

what are methods of sustainable water supply

A

water conservation
recycling
grey water

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6
Q

what are the physical factors affecting water supply

A

geology- rain falling on permeable rocks creates aquifers which are harder to access
climate

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7
Q

what are the social and economic factors affecting water supply

A

limited infrastructure-water pipes and sewers not built quick enough to prevent contamination of sewage
poverty- people find other water supplies as they cannot afford to pay for the water

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8
Q

why is demand for water increasing

A

higher quality of life
industrialisation
energy production

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