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Sikkim flash floods: Central Water Commission’s explore alerted authorities about lake outburst in 2015

A compare done by the Central Water Commission relief in 2015 has now grabbed headlines after flash floods in India’s northeastern suppose of Sikkim wreaked havoc claiming lives of no now no longer up to 22 folk.

As per data agency PTI experiences, the explore had clearly warned the suppose authorities that many of the hydropower initiatives on the Teesta river are extraordinarily liable to such events.

A Glacial Lake Outburst Flood (GLOF), which took situation in capabilities of Lhonak Lake, consequence in a lickety-split upward push in water phases with very high velocities downstream along the Teesta River Basin within the early hours of Oct 4.

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The CWC diagnosis, titled “Glacial Lake Outburst Flood–South Lhonak Arrangement in Teesta River Basin”, became once geared in direction of finding out the impact of GLOF in vulnerable areas and the hydropower initiatives on the river.

CWC investigators came upon out that GLOFs in glacial lakes within the river basin might well well consequence in disagreeable flash floods downstream, affecting areas love Lachen, Chungthang, Dikchu, Singtam, Manipal, Rangpo, Bara Mungwa villages, and the whole lot of hydropower initiatives Teesta I to VI along a 175-km stretch of the river.

The 2015 compare moreover predicted a likely expand within the river’s water stage by 4.forty five metres attributable to a GLOF at South Lhonak Lake.

It assessed that the lake might well well release water at a price of 6,210 cubic metres per 2d, which would maybe maybe well well reach Chungthang and the Teesta III initiatives inner two hours.

Surprisingly, the explore had moreover underlined the necessity for the hydropower challenge authorities to rob the findings into consideration and accordingly originate mechanisms for shut monitoring of the lakes.

In response to data agency PTI experiences, consultants say that despite issuing multiple warnings, the authorities didn’t install early warning programs.

“A number of reviews, including one by the associated price, had cautioned the suppose authorities in regards to the GLOF hazard within the upper Teesta River suppose. We at this time include one flood forecasting popularity 20 km upstream of Chungthang. More stations can even be effect in if the suppose submits a proposal,” a CWC decent acknowledged on condition of anonymity.

In response to the Sikkim Protest Anguish Administration Authority (SSDMA), the catastrophe has killed no now no longer up to 22 folk, including seven navy jawans, whereas 103 others are lacking.

(With inputs from agencies)

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