Flooding in Bangladesh

1. Flooding in Bangladesh

3. Bangladesh monsoons

9. Using Geomaterials • Using local materials that are not easily destroyed in natural disasters that are prone to occur in a particular area. Using bamboo or grasses instead of mud are less likely to be washed away.

10. Terrestrial Processes: Relief Rainfall in the Himalayan Mountains feeds the rivers

11. Most of Bangladesh sits astride the deltas of a series of large rivers flowing from the Himalayas, and about a third of the country floods every year during the monsoon.

12. The use of water upstream for irrigation and storing water in reservoirs has reduced the amount of silt deposited so the level of the land has not been built up. People live on river sandbanks called Chars.

14. Most of Bangladesh is below 10 metres above sea level

15. Population Growth in Himalayan headwater countries like Nepal puts pressure to produce more food by increasing the area of land farmed…..

16. …. So Deforestation in the Himalayas has increased leading to increased run off…. No leaves to intercept , no roots to bind soil in place. It has also destabilised slopes leading to landslides and soil erosion. The soil is carried by rivers and deposited in channels on the low ground. This reduces channel capacity and increases the likelihood of flooding.

17. Flooding in Bangladesh • Video clip of flooding • A movie clip