Archive · 6 Sep 2026
Sikkim Landslide Partially Blocks Teesta, Chyakoong Rivers; Alert Issued
A large piece of hillside fell near two rivers in north Sikkim.
The landslide partly blocked the Teesta and Chyakoong rivers.
Some water collected in the river channels, but both rivers are still flowing.
Officials said the Teesta is currently flowing normally.
Water levels at Sankalang and Phidang are also normal, although the water is muddy.
No one has been reported killed or injured.
Authorities are watching the rivers closely in case conditions change.
People in lower areas have been warned as a precaution.
Residents have been asked to stay away from the riverbanks and trust official information.
A landslide occurred during the intervening night of September 5 and 6 near the Teesta–Chyakoong confluence in north Sikkim.
The collapse, along a new road cutting in the Naga Forest area, partially obstructed both rivers opposite the Theng Tunnel.
Officials said the Teesta is currently flowing normally, while water levels at Sankalang and Phidang remain normal but muddy.
No deaths or injuries have been reported, and authorities are assessing possible property damage.
Downstream areas face no immediate danger, but authorities are monitoring the site and advising people to avoid the affected riverbanks.
- Who
- The Sikkim government, State Disaster Management Authority, Mangan district administration, police and field personnel are monitoring the situation.
- What
- A landslide partially blocked the Teesta and Chyakoong rivers at their confluence, prompting an official alert.
- When
- The landslide occurred during the intervening night of September 5 and 6; one report identified the year as 2026.
- Where
- The landslide occurred above the Chyakoong River in the Naga Forest area, opposite OC Bhir and near the Theng Tunnel in north Sikkim.
- Why
- Authorities issued the alert as a precaution because debris obstructed the rivers and conditions require continued assessment, particularly amid rainfall.
Official Assessment
Precautionary Concerns
Immediate flood risk
Official Assessment
Authorities said the Teesta is flowing normally and there is no immediate danger to downstream areas.
Precautionary Concerns
Officials and Darjeeling MP Raju Bista urged residents, especially people living along the Teesta, to remain alert and take precautions because of rainfall and the partial blockage.
Public response
Official Assessment
Authorities asked people to remain calm, rely on official updates and avoid spreading unverified information.
Precautionary Concerns
The blockage caused concern and speculation on social media, partly because of memories of recent regional flooding and the 2023 Teesta flash flood.
- Incident
- A landslide partially blocked the Teesta and Chyakoong rivers.
- Location
- Naga Forest area, opposite OC Bhir and the Theng Tunnel, near the rivers’ confluence.
- Timing
- During the intervening night of September 5 and 6.
- Casualties
- No deaths or injuries have been reported.
- River conditions
- The Teesta is flowing normally; both rivers continue to flow partially, with water accumulation in the affected stretch.
- Water levels
- Levels at Sankalang and Phidang are normal, though the water is muddy.
- Downstream risk
- Officials reported no immediate threat to downstream areas at the time of the advisories.
- Public advice
- People should avoid the affected riverbanks and not circulate unverified information or visuals.
