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Time bomb Imja Tsho defused – for now

Draining channel on Imja Tsho

Draining canal on Imja Tsho

It’s like handling a water butt. The amount of rainfall is not manageable. If you want to prevent the butt from overflowing, you must drain the water. According to this model, the water level of Imja Tsho has now been lowered by a total of 3.40 meters over a period of two months. The glacial lake in the Everest region, which is almost 150 meters deep in some places, has steadily expanded over the last few years as a result of climate change, and has become a threat to the downstream villages, especially the nearby located Chukhung and Dingboche. A bursting of the natural dam at an altitude of about 5,000 meters could have devastating consequences. Soldiers from the Nepalese army were involved in the construction work for the canal, via which a total of four billion liters of water were drained. According to the government in Kathmandu, “an estimated 96,562 people, including tourists” – for this exact estimate Nepal earns an entry in the Guinness Book of Records 😉 – are expected to benefit from the project, which cost about three million US dollars and was funded by the United Nations. Daene McKinney, professor of Environmental and Water Resources Engineering at the University of Texas at Austin, was on site and has replied to my questions.

Professor McKinney, you were involved in the Imja Lake lowering project in the Everest region. How dangerous did you assess the situation before starting to drain the water?


28. November 2016 | 17:36



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