Tajikistan Dam could break |
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Tajikistan Dam could break
May 2007 - The natural dam holding Lake
Sarez in southeastern Tajikistan could break in the event of a major
landslide, putting thousands of homes in the region at risk of
devastation.
Experts say that in addition to introducing an early warning system and
making local residents aware of the problem, serious research should be
done to find a long-term solution to the problem. This should involve all
four of the countries that would be affected if the lake broke its banks.
Last week, people living in the Bartang valley of the southeastern
Badakhshan region received training in emergency procedures for the
eventuality that the dam ruptures, the Aziya Plus news agency reported.
The training was part of a World Bank funded project aimed at reducing the
risk posed by the lake.
Lake Sarez lake, lying at an altitude of over 3,000 meters (9,842 feet),
was formed in 1911 when an earthquake caused a huge landslide which
blocked the River Murghab.
Lake Sarez, deep in the Pamir mountains of Tajikistan, was created 90
years ago when a strong earthquake triggered a massive landslide that
became a huge dam along the Murghob River, now called the Usoi Dam. (Photo
courtesy NASA)
It is thought that another strong earthquake could break this natural dam
and set off a huge wave of water that would swamp towns and villages in
Tajikistan, Afghanistan, Uzbekistan and Turkmenistan, affecting an area
where around six million people live.
Leonid Papyrin, an expert with the Moscow Centre for Regional Geophysical
and Geo-ecological Studies, says the dam will inevitably break at some
point in the future, but adds that "it is impossible to predict when it
will happen – tomorrow or in a hundred years."
Papyrin said there is virtually no current research despite the need for
extensive studies of seismic activity in the region.
However, Gulsara Pulatova, a United Nations senior advisor on disaster
risk reduction, says recent studies show the natural plug is much more
stable than anticipated.
"It turns out the risk is not as high as we imagined. Many people
exaggerate it, but it’s just panic-mongering," she said.
But Pulatova accepts the need for scientists to continue studying the dam,
as new leaks keep appearing and earthquakes could cause another landslide.
Sobit Negmatullaev, a seismologist currently working as an adviser on the
World Bank’s Lake Sarez Risk Mitigation Project, says that an
international conference will be held in Dushanbe on May 22-23 to discuss
a long-term solution that would entirely eliminate the danger of the lake
bursting.
Sixty-one kilometers long, Lake Sarez lies in an earthquake-prone area.
"There are a lot of options - some water can be drawn off the lake, or
drained via tunnels, [the water flow] can be regulated, and there are a
lot of other ways to make Sarez safe," said Negmatullaev.
Uktam Murtazaev, acting director of the Tajik branch of the Scientific and
Information Centre of the Interstate Coordination Water Commission, says
the lake will need significant investment and appropriate infrastructure
for these measures to work.
Protection measures should be economically viable, he said.
The lake’s waters could be exported as drinking water, used to irrigate
three million hectares (7.4 million acres) of land in neighboring
Afghanistan, and directed into new reservoirs that would power
yet-to-be-built hydroelectric stations on the River Panj, the upper part
of the Amu Darya.
Aminjon Huseinov, who is in charge of matters relating to Lake Sarez at
the Ministry for Emergency Situations, agrees that huge investment is
needed to protect the lake, but says the Tajik government does not have
the budget to do this.
"A solution to this problem requires joint efforts from all the Central
Asian states, Afghanistan and the international humanitarian organisations
operating in our region," he said.
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