Flash floods triggered by a glacier collapse in central Nepal have killed at least 903 people [1].
The disaster has devastated rural districts along the Bhotekoshi River, destroying critical infrastructure and erasing entire villages near the border with Tibet.
The floods began on a Wednesday in mid-September 2023 and continued through the following weekend [2, 3]. A glacier collapse on the Nepal-Tibet border caused the Bhotekoshi River to surge, sending walls of water through the districts of Nuwakot, Rasuwa, and Dhading [1, 2].
Casualty figures vary across reports, though the death toll is widely cited as over 900 [1, 8]. Other reports placed the number of deceased between 691 and 800 [5, 6, 7]. The number of missing persons is estimated to be between nearly 3,000 and over 4,200 [1, 9, 10].
Prime Minister Balen Shah and Nepalese rescue personnel are coordinating the response effort [1]. Approximately 13,000 security personnel have been deployed to the affected regions to locate survivors and recover bodies [1]. Rescue teams have successfully airlifted 573 people to safety [1].
The surging river swept away roads and bridges, cutting off remote communities from emergency services [1, 2]. The scale of the destruction has hampered the ability of ground teams to reach the most isolated areas of the Nuwakot and Dhading districts [1].
“Flash floods triggered by a glacier collapse in central Nepal have killed at least 903 people.”
The collapse of a glacier triggering a flash flood is a characteristic of glacial lake outburst floods (GLOFs), which are becoming more frequent in the Himalayas. This event underscores the vulnerability of Nepal's high-altitude infrastructure and the immediate risk posed to downstream populations as warming temperatures destabilize glacial ice.
