Flooding case studies in detail

Queensland Flood 2011

Causes: Both physical & human

Physical:

- 200 mm rainfall in 2 hours

- 600 mm rainfall at Wiven *** Dam

Human:

- Deforestation

- Urbanisation

Impacts of flood:

Environmental: 4.5m flood

Social: 33 deaths & 32,000 homes affected

Economic: 5000 business flooded

Management:

Prediction: Flood prediction map

Preparation: Evacuation, sandbags, dams

Emergency response: 43 people saved by helicopter rescue & 300 loos sandbaged

Bangladesh Flood 1998

Causes: Both physical & human

Physical:

- Heavy rain then average (flood last 50 days)

- Extensive floodplain - low lying land (80% of country is floodplain)

- Himalayan snow melts fed into rivers

Human:

- Deforestation for fuel for fire/heating & building

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