KATHMANDU: Nepal is battling one of its most devastating Himalayan disasters in recent years after a massive glacial collapse and debris-laden flash flood tore through communities near the Nepal-China border, destroying homes, roads, bridges and hydropower infrastructure and leaving large numbers of people dead or missing.
The disaster struck on Wednesday, August 26, sending an enormous surge of water, mud, rocks and ice down the Lhende-Bhotekoshi-Trishuli river system. Rasuwa district was among the worst-hit areas, with the destruction spreading downstream into Nuwakot, Dhading and other communities.
Death Toll Continues to Rise
Casualty figures remain fluid as rescuers reach previously inaccessible areas.
Reuters reported on Thursday that at least 165 people had been confirmed dead in Nepal, while search teams continued looking for large numbers of missing people. Other reports have put the latest toll slightly higher, illustrating how quickly figures are changing as bodies are recovered and information arrives from remote communities.
The scale of the disaster extends beyond Nepal. Communities across the border in China’s Tibet region were also struck, with casualties and hundreds of missing people reported there.
Authorities have warned that the final death toll could rise significantly because entire settlements, worksites and roads were buried or swept away.
Nearly 1,500 Missing Across Nepal and Tibet
The missing-person count has expanded dramatically as authorities reconcile reports from Nepal and the Tibetan side of the border.
Reuters reported that nearly 1,500 people were missing across Nepal and China’s Tibet region, including more than 700 foreign nationals.
Many foreign visitors were travelling through the region for trekking or pilgrimage, including journeys connected with Mount Kailash and Mansarovar.
Indian nationals are among those unaccounted for, alongside visitors from the United States, Britain, Australia, Canada and several other countries.
Because communications and roads have been severely disrupted, being listed as missing or out of contact does not necessarily mean a person has been confirmed as a casualty.
Helicopters Lead Massive Rescue Operation
Nepal has mobilised the Army, Armed Police Force and Nepal Police, while helicopters are being used to reach survivors trapped in areas cut off by destroyed roads and bridges.
Reuters reported that 125 people, including 20 foreign nationals, were rescued on Thursday as helicopters transported survivors and emergency supplies.
Earlier Nepalese reports said the Army had deployed an MI-17 helicopter with an emergency medical rescue team, while seven Army helicopters and eight private helicopters were involved in rescue operations. Around 1,100 Armed Police Force personnel were also mobilised.
The difficult Himalayan terrain, thick layers of mud and debris, destroyed bridges and damaged communications are complicating search operations.
Injured Taken to Hospitals, Medical Teams on Standby
Medical services have been placed on emergency footing as survivors are evacuated.
Nepalese authorities placed major hospitals including Tribhuvan University Teaching Hospital, the National Trauma Centre and the Armed Police Force Hospital on standby. Injured survivors have also been treated at facilities in Rasuwa, Nuwakot and Kathmandu.
Earlier official updates reported at least 63 injured people receiving hospital treatment, although that number could increase as more isolated communities are reached.
Emergency requirements include trauma treatment, medicines, safe drinking water, food, temporary shelters and sanitation supplies.
International Aid Begins Arriving
International assistance is also being mobilised.
The United Nations and its partners are deploying personnel and supplies, while the United States announced $500,000 in emergency assistance for the response.
India has also responded to the disaster, with reports saying New Delhi sent 10 tonnes of humanitarian assistance while coordinating with Nepalese authorities to trace missing Indian citizens.
China has launched extensive operations on its side of the border. Nearly 800 emergency workers and 150 vehicles, along with sniffer dogs and boats, were mobilised in Tibet, according to reports citing Chinese state media.
Roads, Bridges and Hydropower Projects Destroyed
Beyond the human toll, infrastructure damage is enormous.
Homes, markets, vehicles, highways and electricity infrastructure have been washed away or buried. Around 19 bridges were reported destroyed or swept away, while numerous hydropower facilities and transmission systems were affected.
The Rasuwagadhi border and customs area suffered major destruction, disrupting an important trade connection between Nepal and China.
Damage to electricity infrastructure has also left some affected areas without power, further complicating communications, medical treatment and rescue work.
What Caused the Nepal Flood?
Initial reports suggested that an earthquake might have triggered the disaster, but subsequent analysis changed that assessment.
The U.S. Geological Survey said the seismic signal initially interpreted as a magnitude-4.4 earthquake was generated by the collapse of glacial rock and ice and the resulting debris flow—not an earthquake.
Satellite analysis cited by Nepal’s disaster authority indicated that an ice-and-rock landslide roughly 20 kilometres northeast of the Rasuwagadhi border crossing triggered a debris-laden flood in the Lhende River.
This distinction is important because early descriptions of the event as a conventional glacial lake outburst flood (GLOF) may not fully capture what occurred. Current evidence points more specifically toward a catastrophic glacial or ice-rock collapse that generated the enormous debris flow, although scientists continue investigating the precise sequence of events.
Search for Survivors Remains the Priority
For Nepal, the immediate challenge is still saving lives.
Rescue teams are searching through enormous deposits of mud and debris while helicopters attempt to reach communities isolated from the road network. Authorities are simultaneously trying to identify recovered bodies and establish accurate lists of missing Nepalese citizens, tourists, pilgrims and foreign nationals.
The government has called for food, medicines, drinking water and temporary shelter for displaced families, while disaster teams continue assessing the enormous damage.
With hundreds of people still unaccounted for and some Himalayan communities difficult to access, casualty and missing-person figures are likely to continue changing.
The disaster is also another warning about the vulnerability of the Himalayan region to glacial collapses, landslides and extreme flood events, where steep terrain can transform an ice-and-rock failure into a destructive torrent within minutes.
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