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Zahin Islam zahinislam@yahoo.ca 9/10/06 7:36 PM |
Where Has all the water gone: Water Crisis and Us! Where Has all the water gone: Water Crisis and Us! About 97 percent of the water on earth is in the oceans and is too salty to be used for drinking, farming, and manufacturing. Only about 3 percent of earth's water is fresh. Yet the majority of this is not accessible. Permanent ice & snow:68.7% Groundwater: 30.1% Permafrost, Underground ice: 0.9% Lakes, rivers and swamps: 0.3% Cherrapunji, India, is one of the wettest places on earth. During the monsoon season, 9000 millimeters of rain drench its hills, which lie at the foot of the Himalaya Mountains. Incredible as it may seem, however, Cherrapunji also suffers from water shortage. Since there is little vegetation left to hold the water, it rushes away almost as quickly as it falls from sky. Two months after the monsoon rains have gone, water becomes scarce. Robin Clarke, in his book Water: The International Crisis, years ago described Cherrapunji as "wettest desert on earth." Not far downstream from Cherrapunji lies Bangladesh, a densely populated, low lying country that bears the brunt of the monsoon waters that cascade down the denuded hillsides of India and Nepal. Some years, two thirds of Bangladesh gets flooded. But once the flood waters subside, the Ganges River slows to a trickle, and the land becomes parched. Over 100 million people in bangladesh face this cruel, year cycle of floods and drought. To make matters worse, well water there has become contaminated with arsenic, which may have already poisoned millions of people. Unfortunately, much of the rain occurs in the form of torrential downpours. These not only cause flooding but also result in water running quickly off the land and into the sea. And some places get a lot of rain, while others get little. Chrrapunji has been known to record more than 26,000 millimeters of rain in one 12-month period, wheres the Atacama Desert in northern Chile may experience several years without any significant rainfall at all. Practically all industrial processes consume large quantities of water. 1. The production of one ton of steel can consume 280 tons of water. 2. Manufacturing one kilogram of paper can require as much as 700 kilograms of water (if the factory does not recycle the water) 3.To make a typical U. S. car, the manufaturing uses 50 times the car's weight in water. Agriculture may be just as demanding, especially if livestock is raised in semiarid regions of the earth. 1. To produce one kilogram of steak from California beef cattle requires 20,500 liters of water. 2.Processing just one frozen chicken takes at least 26 liters of water. The water Crisis: 1. Contamination:In poland omnly 5 percent of the river water is fit for drinking, and 75 percent of it is too polluted even for industrial use. 2. Urban supplies: In mexico city, the world's second largest metropolis, the water table, which supplies 80 percent of the city's water, is sinking inexorably. Pumping exceeds the natural replenishment by more than 50 percent. Beijing, the capital of China, suffers from a similar problem. Its aquifer has dropped more than one meter a year, and one third of its well have dried up. 3.Irrigation: The huge Ogallala aquifer in the United States has become so depleted that irrigated land in north-west Texas has shrunk by a third for lack of water. Both China and India, the second- and third-largest producers of food, are facing a comparable crisis. In the southern Indian states of Tamil Nadu, irrigation has caused the water table to sink more than 23 meters in ten years. 4.Disappearing Rivers: During the dry season, the mighty Ganges no longer reaches the sea, as all its water is diverted before that. the same is true of the Colorado River in North America. Solution to the water crisis-- and most envirinmental problems-- require changes in attitudes. People need to be cooperative rather than selfish, to make reasonable sacrifices where necessary, and to be determined to take care of the earth for its future i |
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The New Nation 9/10/06 7:37 PM |
India's river diversion plan: Its impact on Bangladesh India's river diversion plan: Its impact on Bangladesh Indian plans to divert vast quantities of water from major rivers, including the Ganges and Brahmaputra, threaten the livelihoods of more than 100 million people downstream in Bangladesh, the Bangladeshi government fears. Ministers are so concerned that they are considering appealing to the United Nations to redraft international law on water sharing, said a report of the leading British daily The Guardian. A recent report by correspondent John Vidal from Dhaka said : The ambitious Indian plans to link major rivers flowing from the Himalayas and divert them south to drought-prone areas are still on the drawing board, but Bangladeshi government scientists estimated that even a 10% to 20% reduction in the water flow to the country could dry out great areas for much of the year. More than 80% of Bangladesh's 20 million small farmers grow rice and depend on water that has flowed through India. "The idea of linking these rivers is very dangerous.It could affect the whole of Bangladesh and be disastrous," said Hafiz (uddin) Ahmad, the water resources minister. "The north of Bangladesh is already drying out after the Ganges was dammed by India in 1976. Now India is planning to do the same on [many of] the 53 other rivers that enter the country via India. Bangladesh depends completely on water." The minister was quoted as saying that the government had protested to India but had so far not had any response. "Without this water we cannot survive," he said. "If [rice] production falls then we would not know how to survive. We want no kind of war, but international law on sharing water is unsure and we would request the UN to frame a new law. It would be a last resort." The Indian government is preparing to seek international funds for its giant river-linking project, intended to divert water from the north of the country to drought-prone southern and eastern states. Up to one third of the flow of the Brahmaputra and other rivers could be diverted to southern Indian rivers to provide 173bn cubic metres of water a year, supplying millions of people in Uttar Pradesh and Karnataka states with more reliable drinking and irrigation water, said The Guardian. But the plan - which could cost between £44bn and £125bn and take at least 14 years to implement, making it potentially the largest and most expensive water project in the world - would redraw the subcontinent's hydrological map with immense ecological and social consequences. It involves building hundreds of reservoirs and digging more than 600 miles of canals. Preliminary estimates by environment groups suggest that more than 3,000 square miles of land could be flooded and 3 million people forced off their land. India's national water development agency, which is backing the scheme, has said it will divert enough water to irrigate 135,000 square miles of farmland and produce 34,000 megawatts of hydroelectricity. However, much of the electricity would be needed to pump the water around. "This could trigger a long-term disaster on the subcontinent and trigger bloodshed in the region," said Shashanka Saadi, of Action Aid Bangladesh. Bangladesh already knows the consequences of India restricting its water. The Farakka barrage, built across the Ganges 11 miles from the Bangladeshi border in 1974, had at certain times of the year reduced by half the water that once flowed via the Ganges into Bangladesh, said Mr Ahmad. "Great parts are turning into a desert, rivers have lost their navigability, salt water is intruding into farming areas. You can walk across the river Gori at some times of the year," said the minister. Although the Indian and Bangladeshi governments have a water sharing agreement for the Ganges, there are none for the other 53 rivers that cross the border. Bangladeshi water engineers say that Indian barrages, canals, reservoirs and irrigation schemes are slowly strangling the country and are stopping its development. Bangladesh, which is too flat for major reservoirs, says if India goes ahead with its schemes, it may have to build a network of expensive canals to irrigate large areas now fed naturally by the Brahmaputra. "It would cost a huge amount of money, but we may need it to survive," said Mukhles uz Zaman, the director general of the Bangladesh water development board. "At the moment there is just about enough water for everyone, but the Indian plans could be disastrous. They would have catastrophic effects on Bangladesh's rice fields." One of the most serious consequences of India's continuing search for irrigation water is expected to be the further drying out of the Sunderbans, the world's largest coastal forest, a world heritage site shared by India and Bangladesh and vital for fish. "The forest needs fresh water to survive. Because of the Farakka dam fresh water is not reaching there and the rivers are silting up rapidly. The trees are dying" said Mr Zaman. Local people say the Farakka barrage has already changed millions of people's lives. "In eight to 10 years I believe that most of the Sunderbans will be silted up. The rivers flow far less than before the barrage was built, and it is getting worse every year," says Humayun Kabir, of Noapara, where a large river is now a small backwater and 6 metres (20ft) of silt has been deposited across thousands of hectares. "These new Indian plans would finish the whole area," reported The Guardian quoting Kabir. |
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