Nepal: IRDR Rapid Analysis Report - Scientific Anatomy of the 26 August 2026 Bhotekoshi Flash Flood
EXECUTIVE SUMMARY The 26 August 2026 Bhotekoshi flash flood appears to have been triggered by an ice, rock and soil mass failure around the Deding/Langtang region rather than intense localized rainfall. The failure likely blocked the river and formed a temporary natural dam for about 18-19 hours.