The main cause of the floods was unusually severe monsoon rains and an unusually high volume of runoff from melting snow from the snow caps of the Himalayas. These all increased the amount of surface water and the volume of water in Bangladesh two main rivers, which are very large and connect. The Ganges and the Apparatus both had more than the normal amount of water that they could carry and so were overflowing and flooding. A number of human factors also contributed to the devastating flooding of Bangladesh, including large amounts of deforestation and overbearing. Deforestation for logging or farming removes trees that would otherwise absorb and delay the flow of rainwater. This means that the maximum amount of surface water can travel down the hills and tributaries.
floods in Bangladesh: pattern of illness and causes of death
So why is Bangladesh so prone to flooding? Well the answer to this requires consideration of both the physical landscape and conditions of the country and the impact of its population. Bangladesh receives large amounts of water passing through it with two major rivers the Ganges and Brahmaputra converging and forming a huge delta see picture formed from silt deposited by the river as it enters the sea. Both rivers have large volumes of water flowing through them to the sea as they have large drainage basins which increasing the flood risk; Bangladesh has a monsoon climate and the annual torrential rains which result often result in the rivers exceeding their capacity and flooding; In the spring, melting snow from the Himalayas further increases the flood risks as torrents of melt water enter the rivers at their source. Human causes of flooding in Bangladesh Increasing population pressure in the foothills of the Himalayas where the rain contributes to the source of the River Ganges and Brahmaputra has resulted in intense deforestation. Indeed deforestation in the headwaters is also believed to be responsible for the increased soil erosion which has led to large amount of silt being washed into the rivers and subsequently being deposited on the river bed, reducing its channel capacity and increasing the likelihood of flooding. So what are these positive effects of flooding?
Post a comment. Wednesday, 4 May Flooding case studies. I am getting the impression that many of you are still struggling when it comes to case studies and which ones it is we need to know and so I thought that I would try and summarise each one over the next week - starting off with the rivers ones So, according to the revision guide we need to know about flooding in Bangladesh and Gloucestershire, hard-engineering in the Mississippi and a soft engineering case study either the river Quaggy or river Rhine. Firstly, I thought I would start off with the flooding case studies so here goes
Banglades h LEDC. Flooding is a natural phenomenon in Bangladesh and occurs on an annual basis. The notes below should help you to understand the causes and consequences of flooding in Bangladesh.