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Large Dams Damage Health - Hesperian Health Guides

Dams and Disease Triggers on the Lower Mekong River

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Large Dams Damage Health - Hesperian Health Guides

Learn more about Amazon Prime. A guide to help planners and engineers to the improvment of future water projects. The past century of global experience on water projects is presented as the basis for creating new approaches. First-hand analyses, including 35 case studies from 25 countries, portray the influence of politicians, biologists, engineers, computer models and physicians on the spectacular successes and failures of the builders of canals and dams.

By drawing on this experience, the author outlines methods for assessing, predicting and preventing major water-associated diseases around large dams, canals and irrigation systems.

Dams and Disease Triggers on the Lower Mekong River

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Free Download Dams and Disease Ecological Design and Health Impacts of Large Dams, Canals and Irriga

Summary A guide to help planners and engineers to the improvment of future water projects. The past century of global experience on water projects is presented as the basis for creating new approaches. First-hand analyses, including 35 case studies from 25 countries, portray the influence of politicians, biologists, engineers, computer models and physicians on the spectacular successes and failures of the builders of canals and dams.

By drawing on this experience, the author outlines methods for assessing, predicting and preventing major water-associated diseases around large dams, canals and irrigation systems. Request an e-inspection copy. The Bookshelf application offers access: Offline Computer — Download Bookshelf software to your desktop so you can view your eBooks with or without Internet access.

Dams and Disease Triggers on the Lower Mekong River!
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The country you have selected will result in the following: Displaced people may be promised money or land. But often money is not handed over by local officials. Many times, only people with legal title to land that will be flooded by the dam receive money or other land. Sometimes, the replacement land is too poor to farm.

Towns that will be flooded by a dam do not receive government funds for upkeep and development, so schools, roads, and health services fall into neglect. Some towns remain like this for many years before they are flooded. Dams destroy the natural flow of the river. They cause either an increase or decrease in water flow, depending on the dam. The natural cycle of flood and drought may be disrupted, affecting the entire river and damaging huge areas of land. Mosquitoes breed in the shallow, sunny waters of irrigation canals, and at the edges of reservoirs.

Regularly raising and lowering the level of the reservoir can kill young mosquitoes.

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Dams and Disease: Ecological Design and Health Impacts of Large Dams, Canals and Irrigation Systems;

But the people who manage dams do not usually consider this important. Black flies that spread river blindness lay their eggs in fast flowing water, like the water that flows out of a dam.

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The still waters in dam and irrigation projects are breeding grounds for snails that carry blood flukes. When a dam blocks a river, bits of soil and rock carried by the water silt settle on the river bottom and in the reservoir instead of on riverbanks. When water is let out of the reservoir, the water has no silt in it. Because silt is part of what makes land rich for farming, downstream lands become poor. And because water released from the dam collects silt as it moves, it further erodes the land as it digs deeper into the riverbed.

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When there are plans to build a dam, the first question to ask is: Dams are built for flood control, electricity, irrigation, and to provide water to growing cities. These services could be provided in less harmful ways.

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Pesticides, fertilizers, and industrial waste may collect in the water, making it toxic. Sandy Cairncross; Dams and Disease: The demand for more water development projects and the increased pressure to make natural wetlands economically beneficial creates the need for an ecological approach to wetland management and health assessment. However, our ability to quantitatively assess the health value of wetlands and modifications thereof is limited Darnell, ; Turner, Dams are built for flood control, electricity, irrigation, and to provide water to growing cities.

The second question to ask is: Who is going to benefit? Around the world, communities that would be harmed have resisted big dams and proposed alternatives. In many cases, they are succeeding. If possible, avoid building in natural floodplains and wetlands. Improve warning systems to help people prepare for floods. Preserving the natural flow of rivers can prevent floods more effectively than damming them.

Encourage governments and developers to promote wind, solar, or small-scale water power that generates electricity close to where it will be used. Locally managed and controlled energy is more sustainable for people in cities and towns, as well as in rural areas.

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Dams and Disease: Ecological Design and Health Impacts of Large Dams, Canals and Irrigation Systems - CRC Press Book. Ongoing and proposed construction of several large hydropower dams along the mainstream Mekong River and various tributaries has created.

Local development provides better water security than large dams. In the state of Gujarat in India, thousands of small check dams have been built to collect rainwater for use in the dry season and to replenish the groundwater. The government and villagers share the cost of the check dams. Many villages that once had water to irrigate fields for only half the year, now have water all year round.