GORKHA, NEPAL — Flash floods and sudden landslide dam breaches hit Nepal’s Gorkha district, leaving five people missing, destroying 45 homes, and stranding over 100 foreign trekkers along the popular Manaslu Circuit.
The disaster unfolded early Sunday, October 11, 2026, when a sudden wall of black sludge and mountain debris roared down the Budhi Gandaki River corridor.
Sudden Landslide Dam Collapse Triggers Torrential Surge
Preliminary evaluations by the International Centre for Integrated Mountain Development (ICIMOD) indicate the catastrophic surge was triggered by the failure of a temporary, landslide-induced river blockage near Chumchet.
“This event is another reminder of how exposed mountain communities and river corridors remain to sudden, cascading hazards,” said Pema Gyamtsho, Director General of ICIMOD.
Hydrological monitors at Arughat recorded water levels jumping by more than six meters in under three hours before the gauge station itself was swept away by the floodwaters.
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Because no heavy local rainfall was recorded in the 24 hours leading up to the breach, experts believe a dry landslide high up the catchment dammed a tributary before repeatedly collapsing in cascading surges.
Budhi Gandaki Flood Impact at a Glance:
- Missing Persons: 5 local residents (including 2 women)
- Rescued Individuals: 108+ (including 9 foreigners via military airlifts)
- Infrastructure Damage: 6 bridges (4 suspension, 2 motorable), 3 hydro plants
- Housing Loss: 45 completely destroyed, 27 partially damaged, 34 cattle sheds lost
- Security Forces Deployed: 700+ personnel (171 Nepali Army troops)
Over 100 Foreign Hikers Stranded as Manaslu Trail Snaps
The destruction has severely disrupted peak autumn tourism along the Manaslu Conservation Area Project (MCAP) route.
Bhuwan Raj Ojha, an official at MCAP, confirmed on October 12, 2026, that more than 100 foreign trekkers are currently unable to walk out because extensive sections of the main hiking trail and critical suspension bridges between Yaru Bagar and Jagat were completely washed away.
“Those hikers who want to return because of the flood need to be rescued. Those who want to continue their trekking can do so from locations that are safe. There are restaurants and tea houses along the route. They are safe,” Ojha told reporters.
The Nepali Army has mobilized MI-17 helicopters alongside ground teams to evacuate high-risk groups. By Sunday evening, troops had rescued 95 people from affected zones in Chumnubri Rural Municipality, including three villagers airlifted from a high-altitude cattle shed at Dhaulibhir near the Ungilung River.
By Monday morning, 96 individuals—including nine foreign nationals—had been safely extracted to safe hubs like Philim and Kathmandu.
Extensive Destruction to Hydro Projects and Civil Infrastructure
According to data released by Nepal’s National Disaster Risk Reduction and Management Authority (NDRRMA), the rushing debris flow severely impacted three hydropower projects, including early-stage civil infrastructure at the site of the 341 MW Budhi Gandaki project at Selleri.
Downstream communities in Benighat, Muglin, and Arughat were placed on high alert as police broadcast emergency siren warnings at 4:30 AM, forcing thousands of sleeping residents to seek higher ground.
The event comes less than seven weeks after the disastrous August 26 Bhotekoshi and Trishuli flood, where a massive glacier collapse and landslide surge claimed 1,457 lives in neighboring Rasuwa and Sindhupalchok districts.
Long-Term Implications and What Happens Next
The destruction of major suspension bridges across the Budhi Gandaki has effectively isolated northern Gorkha just as the Dashain festival begins.
- Tourism Rerouting: Trekking agencies are advising international travelers booked for October and November to pivot to unaffected regions like the Annapurna Circuit or Nar Phu Valley. The Manaslu Circuit and Tsum Valley routes are expected to remain closed for several weeks while temporary footbridges are constructed.
- Geotechnical Re-Assessment: Geologists from the Department of Hydrology and Meteorology (DHM) will inspect the upper catchment to ensure temporary debris dams do not pose secondary rupture risks.
- Policy Overhaul: With back-to-back disasters hitting Himalayan river basins, the Nepali government is facing increased pressure from regional climate bodies to establish automated early-warning telemetry networks along high-risk tributaries.
Frequently Asked Questions (PAA)
What caused the flash flood in Nepal’s Gorkha district?
The flash flood on October 11, 2026, was caused by the collapse of a landslide-induced temporary dam blocking a tributary of the Budhi Gandaki River.
Is the Manaslu Circuit trek open after the Gorkha flood?
No, the Manaslu Circuit and Tsum Valley trails are closed because key bridges and lower walking paths between Machhakhola and Jagat have been washed away.
How many tourists are stranded in the Nepal floods?
More than 100 foreign trekkers are stranded in safe teahouses and lodges along the Manaslu trekking route awaiting trail repairs or helicopter evacuation.
What is the damage to infrastructure in Gorkha?
The flood swept away six bridges, damaged three hydropower projects, completely destroyed 45 houses, and partially damaged 27 other buildings.
How many people are missing in the Budhi Gandaki flood?
Five local villagers, including two women, remain unaccounted for following the surge, while no foreign trekker fatalities or injuries have been reported.
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