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Glacial bursts in Sikkim. UPSC NOTE

 Why in News.

South Lhonak lake suddenly overflowed into the Teesta river, creating flash floods that destroyed the Chungthang dam.

Lhonak lake

  • South Lhonak Lake is a glacial-moraine-dammed lake.

  • Its is  located in Sikkim's far northwestern region

  • It is one of the fastest expanding lakes in the Sikkim Himalaya region.

  • It is one of the 14 potentially dangerous lakes susceptible to Glacial lake outburst flood.

  • South Lhonak lake is situated about 5,200 metres above sea level.

Teesta river

  • Teesta River is a 414 km long river.

  •  Rises in the Pauhunri Mountain of eastern Himalayas.

  • It flows through the Indian states of Sikkim and West Bengal and subsequently enters Bangladesh through Rangpur division.

  • The Lhonak lake brusts into the Teesta river 

  • Most affected districts are Mangan, Gangtok, Pakyong, and Namchi.

Chungthang dam

  • The 1,200 MW power project on Teesta river.

  • It is located between Chungthang and Mangan in Mangan district.

  • The biggest of nine working hydro projects on the river in Sikkim.

  • This dam collapsed in the glacier bursts.



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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Glacial bursts in Sikkim. UPSC NOTE
Glacial bursts in Sikkim. UPSC NOTE
Learnerz IAS | Concept oriented UPSC Classes in Malayalam
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