New Delhi: A landslide in North Sikkim’s Mangan district has partially blocked the Chyakoong River and temporarily obstructed the flow of the Teesta, prompting
authorities to step up monitoring in the affected area. The incident took place near the Naga Forest area opposite Theng Tunnel during the intervening night of September 5 and 6.
The incident has raised concern locally, particularly after recent flooding and landslide-related events in the region. However, officials have said there is no immediate threat of flooding in downstream areas and have urged people not to rely on unverified information circulating on social media.
Water levels at Sankalang and Phidang are currently normal, although the water remains muddy, according to authorities. Police and other teams are continuing to monitor the situation.
URGENT ALERT: Landslide Blocks Teesta River Near Chyakoong, Downstream Areas Placed on High Alert
Mangan, September 6, 2026: A massive landslide occurred early this morning above the Chyakoong River, opposite OC Bhir in North Sikkim. Roughly half of the hillside collapsed into… pic.twitter.com/Cul0eH8bi0
— The Darjeeling Chronicle (@TheDarjChron) September 6, 2026
Teesta flow remains normal
Darjeeling MP Raju Bista said he spoke to Sikkim Chief Secretary Ravindra Telang about the landslide. He said the landslide had caused a partial blockage in both rivers, with the Teesta flow temporarily obstructed.
“However, at present, the flow of the Teesta River remains normal. Water has accumulated in the Teesta and Chyakoong Rivers, but both rivers continue to flow partially. No loss of life or injuries has been reported so far,” Bista said.
Bista also urged people living along the Teesta river to remain cautious, particularly as the region is receiving rainfall. “Our entire region is receiving rainfall, so it is better to be safe than sorry,” he said.
Authorities monitor vulnerable areas
The Mangan District Administration said water had accumulated along the affected stretch but both rivers continued to flow. Ground assessments by police personnel at Chungthang and Theng also found the Teesta flow to be normal at present.
The administration has alerted vulnerable areas in the lower belt as a precaution. Police and rescue personnel are monitoring the situation and assessing the impact of the landslide.
Residents have been advised to stay away from the Teesta and Chyakoong riverbanks in the affected stretch until the assessment is complete. The authorities have also appealed to people to remain calm and follow official updates as the situation is being closely monitored.
