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Damming the world Damming the world
The construction of large dams - defined as those with walls at least 15 metres high - has increased significantly over the past 50 years. The average height of new dams, estimated at 30-34 m from 1940-1990, increased to about 45 m in the 1990s, due largely to construction trends in Asia. The average area and volume of freshwater reservoirs have also steadily increased, rising to about 50 km2 between 1945 and1970, declining through the 1980s to 1...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
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Transboundary water governance - averting conflict Transboundary water governance - averting conflict
Most governments recognize that violence over water is seldom strategically workable or economically viable and the most hostile enemies have a capacity for cooperation where water is concerned. The institutions that they create to avert conflict have shown extraordinary resilience. The considerable time taken to negotiate the establishment of these institutions - 40 years for the Jordan agreement for example - bears testimony to the sensitivity ...
26 Jan 2009 - by GRID-Arendal
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Regional flood vulnerability Regional flood vulnerability
Since Asia comprises a large portion of the World’s popula- tion, and more than 40% of all the foods in the world occur in Asia, a large number of people are affected by disasters (Fig. 14). More than 40% of the people killed by natural di- sasters are killed in Asia (Fig. 15). In the ten-year period from 1999–2008, 402 foods were recorded in Africa, 342 in the Americas, 259 in Europe and 649 in Asia. In the same time period close to 1 bill...
06 Dec 2010 - by Riccardo Pravettoni
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Victims and affected people in Pakistan flood, August 2010 Victims and affected people in Pakistan flood, August 2010
Seasonal fooding can occur along all the major watersheds in the Himalayan region (Figure 11–14). The largest problems occur in food prone areas with high population densities. This includes parts of northeast India, south-central Nepal, central and southern Pakistan, large parts of Bangladesh and lower reaches of the large rivers in China. In India around 40 million people are affected by fooding annually and the damage has been estimated...
15 Feb 2010 - by Riccardo Pravettoni
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Recent flood events in the Hindu Kush-Himalaya region Recent flood events in the Hindu Kush-Himalaya region
Since Asia comprises a large portion of the World’s popula- tion, and more than 40% of all the foods in the world occur in Asia, a large number of people are affected by disasters (Fig. 14). More than 40% of the people killed by natural di- sasters are killed in Asia (Fig. 15). In the ten-year period from 1999–2008, 402 foods were recorded in Africa, 342 in the Americas, 259 in Europe and 649 in Asia. In the same time period close to 1 bill...
03 Feb 2010 - by Riccardo Pravettoni
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Recent flood events in the HIndu Kush-Himalaya region Recent flood events in the HIndu Kush-Himalaya region
Recent studies focus attention on the radically changed flood patterns, including heavy rainfall that leads to landslides and soil erosion. For example, in Nepal women and men have noted increased frequency and damage caused by the floods over a twenty-year time-span (Gautam et al., (2007). During floods, rivers may cut into agricultural land, inundate crops or wash the fields away in their entirety. Economically poor and marginalised households ...
05 Dec 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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