NDRRMA Rasuwa Glacial Flood Situation Report 1 (2025)
- Page status
- Working page
- Updated
- 2026-08-27
Summary
This two-page Government of Nepal situation report records the early official assessment of the 8 July 2025 Rasuwa flood. It combines a situation overview, remote-sensing observations, a preliminary damage summary and government response actions as of 10 July 2025.
Key Findings
- NDRRMA describes a sudden flood caused by rapid discharge from a supraglacial lake on the Purepu Glacier in Tibet, approximately 35 km upstream of the Nepal-China border.
- The report says supraglacial ponds began forming in March 2025 and expanded through June. It records an estimated lake area of about 0.525 km² on 28 June, about 0.75 km² on 7 July and about 0.6 km² after the rapid decline on 8 July.
- The mapped flood path follows the Lende/Bhote Koshi and Trishuli corridor from the border through Rasuwa and downstream districts.
- Its preliminary damage summary records the Nepal-China Friendship Bridge, sections of the Rasuwagadhi dry port, about 16 km of road and three hydropower plants as affected.
- The Disaster Risk Reduction and Management Council directed agencies to coordinate with China on identifying the cause and to complete detailed damage assessments. NDRRMA and the Department of Hydrology and Meteorology were still investigating the event when the report was issued.
Relevance
This is the primary early-government source for the 2025 historical example on GLOF Risk and for the event context recorded on Rasuwagadhi.
Limitations
- This is Situation Report 1, issued two days after the event. It is not a final causal investigation or final damage-and-loss assessment.
- Lake-area estimates are attributed within the report to ICIMOD and the Department of Hydrology and Meteorology and may be revised by later analysis.
- The report gives an aggregate count of affected hydropower plants but does not identify each plant or provide plant-level engineering damage.
- Casualty, missing-person and asset-loss figures are time-stamped to 10 July 2025 and should not be treated as final totals.