EnvironmentFriday, 28 August 2026·The Hindu - Environment
Nepal flood as a Himalayan hazard: GLOF, glacier collapse, debris flow and climate-linked risk
The Nepal disaster underlines Himalayan glacial lakes, glacier collapse, debris flows, and the need for long-term monitoring.
Key highlights
Direct fact
In August 2026, Nepal’s flash flood caused major destruction along the Bhote Koshi and Trishuli corridors, and satellite analysis cited by ISRO and other agencies pointed to a glacier collapse or ice-rock avalanche in Tibet, with Nepal reporting damage to 35 motorable bridges, 45 suspension bridges and about 40 kilometres of roads.
Key specifics
- As of Thursday after the flood, at least 389 people had died in Nepal, including foreign tourists.
- Nepalese authorities said 35 motorable bridges and 45 suspension bridges were damaged.
- About 40 kilometres of roads were damaged in the Bhote Koshi and Trishuli corridors.
- The Indian Himalayas have nearly 7,500 glacial lakes and about 15,000 glaciers, many tracked through remote sensing.
- The October 2023 South Lhonak Lake disaster in Sikkim is cited as a major Indian example of a GLOF.
Exam lens
Question type: environment and disaster management, Himalayan glacial lakes, 7,500 lakes, 15,000 glaciers, South Lhonak Lake 2023, bridge and road damage. TNPSC may ask why GLOF risk rises with global warming and why satellite monitoring alone is insufficient.