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57483
Flooding case studies
Description
Geogrpahy Mind Map on Flooding case studies, created by Ruth Armitage on 25/04/2013.
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Mind Map by
Ruth Armitage
, updated more than 1 year ago
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Created by
Ruth Armitage
over 11 years ago
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Resource summary
Flooding case studies
Bangladesh
Physical causes
Low lying country - mostly delta - The Ganges, The Brahmaputra, The Meghna
Gently sloped flood plain - water spreads over large areas and material in the flood plain erodes the banks
Sources of the rivers are in the Himalayas, so monsoon rainfall is intensified by the height of the land
Snowmelt from the Himalayas adds to discharge in Spring
Human causes
Rapid urbanisation - Dhaka at the confluence of The Ganges and The Meghna
Many people are poor and poorly prepared for floods
Population pressure in Nepal and Tibet to the North
Deforestation in the foothills of the Himalayas as trees are cleared for fuel and grazing land
Use of irrigation channels to the north
slows the flow of water
more silt deposited in land, less at the edge of the delta
Social impacts
36 million made homeless
800 deaths
Lack of access to clean drinking water
Can result in gastro-intestinal diseases e.g. Cholera
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