Case study: Example of Drought impacts
- Created by: jazmoon_
- Created on: 09-04-18 10:37
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- Drought: Australia
- Drought is recurring
- Serious deficiency
- rainfall totals within the lowest 5% of values on record for at least three months
- Severe deficiency
- rainfall totals within 10% of values record within three months
- Serious deficiency
- Drought prone 30% of the country affected per year
- Low highly variable rainfall
- Climate is dominated by the sub-tropic high-pressure of the southern hemisphere
- Droughts vary considerably
- Some are short-lived
- Some last for years
- Some are localised
- Some cover much of the country eg. The Big Dry
- Closely linked to ENSO
- East Coast drought of southern Queensland, 2002-3
- Since 1970s there has been a shift in rainfall patterns
- Eastern Area where most people live is becoming drier in comparison to the NW
- The BIG DRY is associated with longer climate change - Warmer drier climate
- Low highly variable rainfall
- The BIG DRY
- Murray Darling basin provides 50% of agricultural products
- Australian cities have sophisticated water supplies
- Withstand multiple episodes of low run-off
- Reservoirs fell to 40% of capacity
- Adelaide draws 40% of water from River Murray
- So over extracted no water flowed out at the mouth
- Future demands set to exceed supply
- Desalination plants
- Recycling of grey water and sewage
- Better water conservation
- Drought is recurring
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