A sudden surge in the Bhote Koshi River tore through Timure and Syabrubesi in Rasuwa District on Wednesday morning, August 26, 2026, destroying settlements, bridges and hydropower infrastructure before flooding downstream areas along the Trishuli River. The flood has affected the entire corridor used by travelers heading toward Langtang Valley, Goshainkunda trek, and the Nepal–China border at Rasuwagadhi. The Nepal government has declared six districts disaster-affected areas for three months.
The flood hit hard and fast. A helipad near Timure that would normally support rescue flights was itself swept away, which badly slowed the initial emergency response in a district where helicopters are often the only way to reach isolated communities. Roads, bridges and riverside buildings along the corridor took heavy damage, and the surge carried debris and floodwater downstream toward Trishuli Bazaar, with dozens of homes reported destroyed or damaged in Nuwakot as the water pushed further down the valley.
The Bhote Koshi River surged suddenly on Wednesday morning, flooding Timure and Syabrubesi with little warning. Rasuwa Chief District Officer Narendra Pariyar told the Kathmandu Post that the cause remained unclear, and there had been no rainfall near the district headquarters at the time.
The flood washed away a strategic border bridge at Timure, cutting off trade routes to China via Rasuwagadhi. A rescue helicopter sent to Timure could not land because floodwaters had swept away the local helipad. Pilot Subash Khadka reported that the village was barely visible from the air. Resident Ajay Shrestha told the Kathmandu Post the water looked as though a dam had burst.
The Bhote Koshi River surged suddenly on Wednesday morning, flooding Timure and Syabrubesi with little warning. Rasuwa Chief District Officer Narendra Pariyar told the Kathmandu Post that the cause remained unclear, and there had been no rainfall near the district headquarters at the time.
The flood washed away a strategic border bridge at Timure, cutting off trade routes to China via Rasuwagadhi. A rescue helicopter sent to Timure could not land because floodwaters had swept away the local helipad. Pilot Subash Khadka reported that the village was barely visible from the air. Resident Ajay Shrestha told the Kathmandu Post the water looked as though a dam had burst.
The floodwaters moved downstream along the Trishuli River, causing severe damage in Trishuli Bazaar, Betrawati and Devighat in Nuwakot District. Nepal News reported that around 60 houses near Trishuli Bazaar were swept away. Two concrete bridges over the Trishuli River were destroyed. A local prison was inundated up to the first floor.
Four hydropower plants have been severely damaged, wiping out roughly 200 megawatts of generation capacity, approximately 8% of Nepal's total power supply. The Trishuli, Devighat and Chilime hydropower projects all sustained damage. Three blocks and a substation of a 25-megawatt solar power plant were also swept away. Floodwaters later reached Malekhu market in Dhading and were heading toward Mugling and Narayanghat.
Eight bodies have been recovered in Nuwakot and Dhading so far, according to Central Police Spokesperson DIG Abinarayan Kafle, as reported by Nepal News. Twenty-six Nepal Police personnel and seven Armed Police Force personnel are missing. Separately, 14 customs employees at the Timure Customs Office near the Nepal–China border remain out of contact.
Earlier reports from Nuwakot CDO Shambhu Prasad Regmi stated that many residents near the Trishuli River had moved to safer locations after receiving a flood warning. These figures are expected to change as rescue operations continue and damage assessment expands.
The Nepal Army deployed two helicopters to Trishuli Bazaar for search and rescue. An emergency medical team has been sent to Trishuli District Hospital. Rescue teams from the Dhunche and Trishuli barracks have been mobilized, along with trained disaster-management personnel from No. 6 Brigade Headquarters in Gajuri.
Prime Minister Balendra Shah convened the National Security Council and held an emergency cabinet meeting. The government directed free medical treatment for all flood-injured individuals and publicized the toll-free rescue hotline 1234.
|
Location |
Damage Reported |
|
Timure |
Settlements, helipad, border bridge swept away; trade route cut |
|
Syabrubesi |
Settlements and market area damaged |
|
Trishuli Bazaar |
Around 60 houses swept away; local prison flooded to first floor |
|
Betrawati |
Market center flooded |
|
Trishuli River |
Two concrete bridges destroyed |
|
Hydropower (4 plants) |
~200MW capacity damaged (~8% of Nepal's supply) |
|
Solar power facility |
Three blocks and substation destroyed |
|
Malekhu / Mugling |
Floodwaters reached market areas, heading downstream |
The government declared Rasuwa, Nuwakot, Dhading, Chitwan, Gorkha and Tanahu as disaster-affected areas for three months following the emergency cabinet meeting. China and India have both offered assistance. The Nepal government's Ministry of Information and Communication issued an emergency notice urging all households along river banks in these districts to stay in safe locations.
BBC News Nepali aired testimony from Shaktimaya Tamang, a Rasuwa resident, who described losing her house, farmland and livestock to the flood. Social media posts from eKantipur showed additional bridge damage in the Dhading area. Nepal in Last 24 Hours reported that vehicles heading toward Dhading, Rasuwa and Chitwan were being held in Kathmandu.
All public transport from Kathmandu toward the affected districts has been halted. Authorities have told the public to completely avoid these road corridors until further notice:
Five districts remain on high alert: Rasuwa, Nuwakot, Dhading, Gorkha and Chitwan. Embassies have urged foreign nationals to avoid flood-affected and high-risk areas. Bridges are destroyed, river levels remain unstable, and conditions can change without warning.
Do not travel toward any of these areas until authorities confirm it is safe.
The Langtang trekking trail begins from Syabrubesi, which has been directly affected by this flood. No official statement has confirmed whether the trekking trail itself is open or closed. However, with road access to Syabrubesi severely disrupted and rescue operations ongoing, reaching the trailhead is currently not practical.
Travelers planning treks in the Rasuwa region should wait for confirmed updates from local authorities, their trekking agency or the Nepal Tourism Board before making travel decisions.
The Bhote Koshi River flows into Nepal from Tibet and merges into the Trishuli River system. When a sudden surge occurs upstream, the floodwaters travel rapidly through narrow mountain valleys, picking up debris and gaining force before reaching downstream towns like Trishuli Bazaar, Devighat and Malekhu.
This is not the first time. On July 8, 2025, a flood originating from Tibet's Lhende River surged into the Bhote Koshi, killing at least nine people and leaving 19 missing. That flood destroyed the Miteri Bridge connecting Nepal and China, damaged the Rasuwagadhi dry port and wrecked hydropower infrastructure along the same corridor.
Rescue operations are ongoing. Casualty figures, damage estimates and road conditions may change as assessment teams reach more areas. River levels can rise again during the monsoon. Official travel advice is expected to be updated as the situation develops.
North Nepal Travel & Trek will continue to update this page as confirmed information becomes available.
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