A Glacial Lake Outburst in Bhutan has been reported raising concerns of flash floods in West Bengal and Assam. Flooding was reported at Lemthang in Bhutan.
This has triggered a high alert across North Bengal, with authorities initiating emergency preparedness measures amid the possibility of flooding along the Sankosh River and its tributaries.
The official letter in this regard read as follows, “Glacial Lake Outburst Flood (GLOF) has been reported in Shintaphu Lake in Punatsangchhu river in Bhutan by Indian Embassy.”
It further added, “Due to reported Flash flood in upper reaches of Punatsangchu (Sankosh river in India), water level is likely to rise suddenly in India in the districts of Alipurdwar of West Bengal and Dhubri of Assam.”
It is worth mentioning that, “The flood water will travel downstream and will reach border in 6-8 hrs and likely to impact district of Alipurduar in West Bengal and Dubri in Assam.”
Furthre, “Local Authorities in these two district along Sankosh river in the states of West Bengal and Assam are advised to be alert and closely monitor the situation and take necessary precautionary measures.”
The situation arising out of the Glacial Lake Outburst flood in Bhutan is being closely monitored by HCM Dr @himantabiswa.
Team @dcofficedhubri is on ground and prepared to effectively deal with the downstream effects.
@diprassam
— Chief Minister Assam (@CMOfficeAssam) October 30, 2026
