coastal flooding
Example of coastal flooding: Bangladesh is a very low lying country, (only 1-2 meters in most parts). The contribution of global warming in the last few years has set in motion the rise in sea water levels, the narrow north tip to the Bay of Bengal, tropical storms that whip up wind speeds of up 225 km/h send waves (up to 8 meters tall) crashing into the coast, the shallow sea bed and the fact that water coming down from the rivers Ganges and Brahmaputra can not escape when the water level rises all contribute to the severe flooding of the Bangladesh coastline. On the night of 29 April 1991 a powerful tropical cyclone struck the Chittagong district of southeastern Bangladesh with winds of around 155 mph. The storm forced a 6 meter (20 foot) storm surge inland over a wide area, killing at least 138,000 people and leaving as many as 10 million homeless. The very large cyclone was "funnelled" down the Bay of Bengal. This was due to a low pressure area - higher sea levels - surge flooding... Snow melt from Himalayas, Deforestation - more water in rivers - more sediment build up - higher risk of flooding , Very heavy rain. Nature + Impact of problem: About 115 million people live in low-lying deltas of the 3 major rivers, The Ganges, Brahmaputra and Meghna. It is predicted that a 1meter relative sea level rise would displace 13 million people more than 1 5th of the countries
Flooding in Bangladesh
Flooding in Bangladesh Bangladesh is a low lying country and almost all of Bangladesh lies on the largest delta in the world. It is situated between the Himalayas and the Indian Ocean with a vast river basin made up of the Ganges, the Brahamaputra, the Meghna and their tributaries. It also has the highest population density in the world with 847 inhabitants per square kilometer. Bangladesh is one of the world's least developed countries and prone to natural disasters, such as cyclones, floods and droughts. Half of it is less than five meters above sea level. Therefore any change in the earth's temperature that causes the level of the oceans to rise would seriously affect the flooding of the delta area of Bangladesh. A fifth to a third of the country is annually flooded by the river Ganges and there are many factors both human and physical which encourage the river Ganges and Brahmaputra to overflow its river banks. The obvious physical cause of flooding in Bangladesh is that about 90% of the land is below sea level, therefore any changes in the sea level would cause serious problems for Bangladesh. Another physical cause includes the snow melting in the Himalayas, caused by global warming. The Himalayas are one of the few places in the world that retain permanent glaciers. In the warmer summer season however glacial ice goes through a period of melting. The source of
Flooding in Boscastle
Flooding in Boscastle In this report I will assess the causes, both natural and artificial, of the flooding in Boscastle on 17 Aug 2004 and the impact of the floods on the local environment, as well as the measures that could, and are being undertaken to deal with the effects of flooding. Boscastle, is located in the south-west of England, on the coast, near Cornwall. The settlements position in relation to the mouth of a very narrow river valley leaves it vulnerable to flooding. Flood risk is heightened whenever storm waters are denied a wide flood plain to spread into: in a narrow valley, whatever land exists either side of the channel will become rapidly submerged, once the river has burst its banks. These were the heaviest rains in living memory for the people of the village - 185mm fell in just five hours. Given that the total annual rainfall for much of southern England is around 1,000mm, this is a lot of water to have arrived in such a very short time. Fortunately, no one died on this occasion, despite the great hydraulic force of the water flowing through the town's streets. In contrast, property damage was high. At least thirty cars were washed straight into the harbour and many more were left upturned and badly damaged. A three-metre high wave of water was reported to have crashed through one street at 40 miles per hour. Fridge-freezers were picked up and swept
The Boscastle Flooding
The Boscastle Flooding Heavy storms on Monday 16th August 2004 hit the area of Boscastle and Crackington Haven in North Cornwall, causing 6cm (2ins) of rain to fall in two hours in the Boscastle area, see the radar image below. Accentuated by the steep-sided topography surrounding the Boscastle area, such high rainfall falling in such a short time could not be absorbed into the ground and a 3-metre high flood rushed through the village (travelling up to 40mph) The flash flood at Boscastle, north Cornwall, on Monday 16 August, was the consequence of a violent four-hour downpour over the small catchment of the Valency river. There was no obvious culprit: some newspapers suggested that Hurricane Bonny was responsible, others blamed global warming, but in truth there was no evident external influence on the meteorological events of that afternoon In this essay, I will be investigating why the Boscastle flood occurred (including the effects and responses) and how we can limit the damage that flooding causes. In this essay I will also be investigating alternative ways to carry on with everyday life and still be able to keep the rivers from flooding. IMAGES OF THE BOSCASTLE FLOODING What were the causes, effects the response of the Boscastle flood? Rivers flood because of many reasons. Some reasons are deforestation. This causes flooding because the trees and plants cannot
Flooding: Bangladesh
Flooding: Bangladesh Flooding is a major problem throughout the world, sometimes it costs many lives. In Less Economically Developed Countries (LEDCs) the effects of flooding can be disastrous, it can ruin people's lively-hood, their homes and their family. This is the reason why people must be protected from floods, the effects of them, and the causes of them eliminated. Bangladesh is a LEDC and suffers from severe floods regularly which results in many deaths and immense destruction on both, a geological and psychological level. The causes for these floods is Bangladesh's situation in the world, its sits on the confluence of three major rivers, two being the Ganges and the Brahmaputra. Bangladesh is also extremely flat, 80% of the country is flood-plain or delta. This, heavy monsoon rain and melting snow flowing down into the rivers of Bangladesh from India and Nepal, make flooding extremely likely. Adding to these physical causes are the human causes, such as highly densely populated areas around rivers, lack of education and funds as well as deforestation limiting interception and transpiration. As life is always valued the people of Bangladesh must be protected. There are many suggestions about what can be done to protect Bangladesh from it's unfortunate state. The biggest problem that Bangladesh has concerning flood protection is the funds that would be needed to
1998, Bangladesh flooding.
In 1998, Bangladesh experienced its most disastrous flooding ever. Occurring from July to mid-September, water at one point inundated 66 percent of the land. Although the country is regularly affected by various floods, such as overflowing rivers and coastal tidal rises, this flood substantially exceeded previous ones in 1954, 1974, and 1988. Crop losses were extensive. Heavy rainfall in the catchment area of the three major rivers (Ganges, Brahmaputra, Meghna), combined with above normal melting of ice in the Himalayas and an apparent rise in sea-level to create severe drainage congestion. Fifty-two of the country's 64 administrative districts were submerged at the height of the floods. The flooding caused losses to all major crops and affected production throughout the 1998-99 year. The national deficit of rice was estimated by the FAO to be 3.6 million tons. In the fall of 1998, the country faced a 22 percent shortfall between production and national consumption. Human suffering from food shortages and famine, as occurred in 1974, threatened. Twenty million people were made homeless. In response, the government mobilized local governments, non-government bodies, and international agencies to aid in food relief and subsequent rehabilitation. Initially, the scope of the emergency overwhelmed government capacity. The Disaster Management Bureau was paralyzed, failing to
Bangladesh Flooding
Introduction In this assessment I'm going to be writing about the flooding in Bangladesh. First I will look at the causes of flooding, including human and physical causes. I will also be writing about the effects of these floodings and how people cope with these disasters, including some pictures and images. In addition, I will include a short story about a lucky survivor as well as how human activity is making the flooding worse. Furthermore, I will be talking about the conflicting demands and what I think will happen in the future. Data UK Bangladesh Population (millions) 55 18 Area (sq km) 245000 44000 No. of people per sq km 241 909 Average annual income (£) 2000 50 % of people living in rural areas 0 82 Length of roads per 1000 sq km of land 500 30 Phone lines per 1000 people 488 2 Radios per 1000 people 429 47 TV's per 1000 people 488 2 Causes of Flooding (Human & Physical) There are lots of different of the Bangladesh flooding and they can be split into two sections; human causes and physical causes. Human causes are when humans do things to cause the flooding but a physical cause is what happens naturally to cause the flooding. Human Causes Cutting down trees causes increased run-off (water flowing over the surface of the earth).This is called Deforestation. Rain water reaches rivers faster which means flooding becomes more likely.
Flooding In Bangladesh.
.FLOODING IN BANGLADESH. Bangladesh is in southern Asia, bordering the Bay of Bengal between India and Burma. Bangladesh is an extremely poor and a country that is prone to extreme devastating floods. The geography of Bangladesh does not help either. The population of Bangladesh is 131,269,860 and the total area of the country is 144 thousand square kilometres this works out to be a 900 people to a square kilometre. 82 percent of these people are distributed in rural areas and 18 percent of these people are distributed in urban areas. Bangladesh's terrain is mostly flat and slightly hilly in the southeast. The climate in Bangladesh is normally mild in the winter months (October to march) and hot and humid in the summer months (march to June) then in the months of June through October the climate is humid and warm with lots of rain, this is the time of the year that the monsoon takes place. The land in Bangladesh is used in 4 main ways. Arable 73%, permanent crops 2%, permanent pastures 5%, forests and woodlands 15% and the other 5% is in other ways. 31,000 square kilometres of Bangladesh is irrigated. Bangladesh is prone to many natural hazards such as; cyclones, draughts and of course floods. The floods in Bangladesh are due to a few main factors, which are coastal flooding, river flooding, tidal surges, deforestation, erosion and the monsoon. The annual rainfall in
Flooding in Yorkshire.
Page No: Title Introduction 2 Flooded Areas 3 Map of Yorkshire 4 Causes of flooding 5 Effects of flooding 6 Management of flooding 7 Conclusion In the past few weeks the whole of the United Kingdom has been hit by floods. The worst part hit was Yorkshire. Yorkshire is a big county in the North East of the United Kingdom. Yorkshire has been split up into four small county's which are : North Yorkshire South Yorkshire West Yorkshire East Yorkshire Yorkshire has some big cities like Leeds,York and Hull. York has been hit the worst by the floods. They have put flood defences in York and the river water is going to Barbly near Haywood. On the river Ouse in York there are 15,000 sandbags have been put on the river banks involing the emergency service,army and the local people. Much of York remains underwater after a week of rain. There will be three sections to explain about the floods : Causes of the floods The effects of the floods The mangament of the floods. Page 1 There are two types of effects of flooding in the Year 2000. They are: Immediate effects Long term effects Immediate effects Insurance Company has to pay millions of pounds to the damaged and flooded properties. The floods have hit businesses very hard. They have lost millions of pound in a few days. Some small shops have gone bankrupt. Years of hard work for some shopkeepers have gone down
Rainfall and Flooding
Rainfall and Flooding The flooding in York was due to the great amount of rainfall in the area, for example, in one year the average total rainfall for Folkestone is 740 millimetres but during the floods in York there was over 220 millimetres in just three weeks, that is almost a third of what Folkestone get in one year. The River Ouse rises in the Pennines and carries the Rainfall down the side of the mountains. When this reaches the foot of the mountain and the flat land, it overflows onto the flood plain. Because of the great amount of rain, the flooding spread to nearby cities such as York. Causes of Flooding, Aim 1: To investigate the causes of flooding in York. Hypothesis 1: York is situated in a place that is prone to flooding Causes of the floods: In York in the early months of 1982 there were severe floods. There are several explanations for the floods and as to what caused them and many people say that there should have been more done to have prevented them. However, they have past and a lot of the 2 million pounds damage has been rebuilt. All that the people in York can do now is to work at prevention methods to stop any flooding as bad as the last, in the future. The cause of the floods was mainly the great amount of rainfall which fell during the months around the time of flooding. In three weeks over 220 millimetres of rain fell. This is over one
