Rapid river surge in Nepal forces residents to flee as water climbs 30 ft in half an hour
A sudden rise of up to nine metres in the Trishuli and Bhote Koshi rivers forced people along the banks to scramble for higher ground, with locals relying on whistles and shouts for warning.
On Wednesday, the Trishuli and Bhote Koshi rivers in Nepal surged dramatically, with water levels at Galchhi rising nine metres and at Malekhu climbing seven metres in just half an hour, prompting residents to climb the banks amid the roar of whistles and shouts. Several monitoring stations were swept away, and automatic sensors in the upper Bhote Koshi stopped transmitting before they could issue alerts, according to senior divisional hydrologist Binod Parajuli.
After the flood’s onset, more than 600,000 SMS warnings were sent to riverbank communities in Rasuwa, Nuwakot, Dhading and Chitwan, saving hundreds of lives downstream, though Parajuli admitted the system failed in Rasuwa. The International Centre for Integrated Mountain Development (ICIMOD) confirmed the rapid rise, highlighting the need for denser real-time monitoring and faster cross-border data sharing. Meanwhile, the Chinese Embassy in Kathmandu dismissed accusations that China failed to provide timely warnings, labeling them “fake news” and urging both nations to focus on rescue and relief rather than blame.
Why it matters
The flash flood exposed gaps in early-warning systems, risking lives in a densely populated river valley.
How this story developed
- Aug 26 Flash flood devastates Himalayan villages, killing at least eight in Nepal and sparking cross-border rescue efforts
- Aug 26 Three American citizens have been confirmed missing in the flood’s aftermath.
- Aug 26 Australian officials began confirming the status of Australians reported missing in the floods.
- Aug 27 A sudden glacial-lake outburst flood in the Nepal-Tibet border region has killed over 270 people and left more than 1,500 missing, including hundreds of foreign tourists.
- Aug 27 Death toll rises to at least 157 in Nepal and three in Tibet, with 826 people missing in Nepal and 558 missing in Tibet.
- Aug 27 The United Nations pledged $2 million for relief efforts.
- Aug 27 The US Department of State said 90 Americans were unaccounted for in China and Nepal and it was not aware of any US deaths.
- Aug 28 Authorities warned that the debris‑clogged river and rising water in a blocked lake could cause additional flooding downstream.
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