Nepal flash flood devastates Trishuli River villages after glacier collapse

New satellite imagery has revealed the scale of destruction along Nepal's Trishuli River after a deadly flash flood triggered by a glacier collapse. The flood swept through settlements, bridges and hydroelectric power stations in the valley, leaving a trail of mud, debris and washed-away buildings. The worst damage was seen along the Nepal-Tibet border area and in communities downstream.

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Nepalese officials say more than 550 people have been killed and hundreds more are missing. The flood struck on Wednesday, and verified images show the torrent moving through a narrow valley with steep sides, intensifying the impact on villages built close to the river. A key border crossing was engulfed by floodwater and was later shown in satellite imagery to have been almost entirely washed away.

Among the places reviewed was Timure, a village a few miles south of the border crossing, which now appears largely gone. Further downstream, Syapru Besi is shown covered by mud, rock and other debris, with houses, bridges and a hydroelectric power station destroyed. In Trishuli, about 45km downstream from the border, satellite images show an entire neighbourhood essentially washed away, while verified video captured a bridge collapsing as the river surged forward.

The disaster matters because it has damaged critical infrastructure in a region where transport links and power supply are already vulnerable. The destruction of bridges and hydroelectric facilities is likely to affect movement, local services and recovery efforts across the valley. The flood also highlights the risks faced by communities living along mountain rivers near the Nepal-Tibet border, where steep terrain can channel water and debris with little warning.

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The imagery also shows how far the flood reached. Damage and mud were visible more than 2.5km upstream from the border crossing, rising to about 100m above the point where the flood first hit. In one verified video, people inside a bus were seen crying out and trying to flee as the water rushed down the river.

Other footage showed residents sheltering in a house and watching floodwater carry away debris and a vehicle. What remains unclear is the full scale of the missing persons count and how many people may still be trapped or unaccounted for in the affected valley. The extent of damage to roads, bridges and power stations will also become clearer as access improves.

For now, the confirmed evidence points to one of the most destructive flash floods in the area in recent memory, with recovery likely to be prolonged.

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