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Flooding In Bangladesh - Coggle Diagram
Flooding In Bangladesh
Causes
Bangladesh is a small, flat, low-lying country; 60% is less than 6 metres above sea level
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- High river discharge
- Overflow of water courses
- Synchronisation of peak flows
- Backwater effects
- River bank erosion
- Changing of river course
- Old river courses
- Siltation
- Roads, settlements, impermeability of soils
- Disappearance of wetlands
- Poorly planned embankments
- Embankment breaching
- High tides
- Rising of mean sea level during monsoon season
- Soil saturation
- Waterlogging
- Impeded drainage due to high water level in the rivers
Impacts
- Number of people affected - c. 30 million
- Number of deaths - c. 780-1500
- Number facing malnutrition - 25 million
- Rice production loss - 2.2 million tons
- Damage to cultivated area - 1.5 million ha
- Loss of livestock sector - $500 million
- Roads damaged - 15 000 km
- Embankments damaged - c. 4500 km
- Bridges/culverts damaged - >20 000
- Villages damaged - 30 000
- Houses damaged - 550 000-900 000
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