Causes, Effects and Responses to the 1998 Floods in Bangladesh. By: Christina McConney MYP1. What are the Physical Causes of Flooding. Source: http://www.ifrc.org/what/disasters/images/about/p16204.jpg. - PowerPoint PPT Presentation
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Causes, Effects and Responses to the 1998 Floods in Bangladesh.
By: Christina McConney MYP1
The water is able to spread easily due to the fact that Bangladesh is mainly a flat country with 70% of its land being less than 1 meter above sea level and 80% being a flood plain. This topography results in the water being able to spread across large areas of land.
This map shows why the water spreads so far into the country. It is because so much of the land is so close to sea level.
Washout: the topography clearly shows why Bangladesh floods so regularly
The increase in population in Bangladesh is one of the human causes of flooding. This increase in population means that more water wells have been dug in the earth and has weaken the soil. This means that the land floods more often.
This graph shows how fast and how much the population grew between 1960 and 2000.
Another impact of the population growth has been the large amount effects of deforestation at the foothills of the Himalayas. The picture above shows how the water level rises when there are less trees. The trees that used to hold back the water have been cut down
Another human impact is the amount of construction.
In this picture taken of the 2004 floods, you can see that the large amount of high buildings constructed so close together does not allow the water to spread and as a result it can only rise up.
30 million people were left homeless after the floods
People were being bitten by snakes.
The picture on the left is an example of poisoning. This is the after effect of walking around in contaminated water for so long.This particular type is called arsenic poisoning
Shopping became very difficult, almost impossible.
There were major food shortages through out the flooded areas.
175 000 cases of serious diarrhoea broke out and affected children the most.
The floods provided more land to live on.
Fresh water wells were built.
Water purification tablets were brought in to help the affected people.
Shelters were made.