Nepal flood toll crosses 1,100 as India sends fifth relief aircraft
Where it stands
A flash flood hit Nepal's Rasuwa district on the morning of 26 August 2026. The flood came down the Bhote Koshi and Trishuli rivers from the Tibet border. Nepal Police put the death toll at 1,127 on 2 September 2026. The United Nations put the missing at 4,247 on 31 August 2026. Nine bodies were recovered in India. The UN calls the flood Nepal's deadliest disaster since the 2015 earthquake. China reported 16 dead and 546 missing on the Tibet side. India has sent five relief aircraft, a tunnel rescue team and forensic experts. Nepal has asked India for advance power imports from September 2026. Late on 1 September 2026, the Marsyangdi river crossed the danger mark. Three other rivers were above alert level.
Background
The Bhote Koshi river enters Nepal from Tibet near the Rasuwagadhi border crossing. The Bhote Koshi joins the Trishuli river. The Trishuli meets the Kali Gandaki at Devghat to form the Narayani. The Narayani enters India as the Gandak. The Gandak joins the Ganga in Bihar. The Trishuli valley holds about 20 hydropower projects. The valley also carries Nepal's main road to Tibet and the Kailash Mansarovar pilgrimage route. The same river had a flood in July 2025 from a glacial lake in Tibet. In the monsoon months, Nepal sells surplus hydropower to India. The flood struck in this export season.
How it developed
-
26 August 2026, morningHow it started
A glacier collapse sends a flash flood down the Bhote Koshi and Trishuli
On the morning of 26 August 2026, a flash flood came down the Bhote Koshi into Rasuwa district. The United States Geological Survey recorded a magnitude 5.2 seismic event at 8.37 am. The survey said the signal came from a glacier collapse and debris flow, not an earthquake. The flood hit Timure, Syabrubesi and the Rasuwagadhi border crossing first. The Gyirong border port on the Tibet side was also hit. The flood then moved down the Trishuli to the Narayani. The 42-km road from Betrawati to the border was destroyed. On 27 August 2026, police listed 826 missing, including 133 Indian pilgrims. India's Central Water Commission warned the surge could reach the Gandak in India.
-
26 to 27 August 2026Consequence
Bihar opens all 36 gates of the Gandak barrage. UP districts on alert.
On 26 August 2026, Bihar opened all 36 gates of the Gandak barrage at Valmikinagar. Discharge peaked at 1.50 lakh cusecs at 11 pm. Discharge fell the next morning. Six districts along the Gandak were put on alert. More than 5,000 people were moved from low-lying areas. Uttar Pradesh put Maharajganj and Kushinagar on high alert.
-
26 to 29 August 2026Official response
India flies relief, tunnel rescue and forensic teams. Nepal takes expert help only.
The Indian Air Force flew three relief sorties between 26 and 28 August 2026, about 57.5 tonnes in all. The third aircraft carried an Army tunnel rescue recce team and a medical team. On 29 August 2026, the Ministry of External Affairs said 108 Indians had been rescued in Nepal. More than 275 Indian nationals and 128 persons of Indian origin remained missing. India offered NDRF teams and Bailey bridges to Nepal. On 28 August 2026, Nepal's foreign minister said Nepal needed help in technical areas, not in search and rescue.
-
30 August 2026Consequence
Nepal loses power capacity. Nepal seeks advance power imports from India.
The Nepal Electricity Authority reported damage to 14 hydropower projects with about 748 MW of capacity. Nine of the projects were operating plants with 354 MW. On 30 August 2026, Indian power ministry officials said Nepal had sought advance import approvals from September 2026. Officials said India would supply power when Nepal asked. Power flow from Nepal to India fell by about 400 MW from the earlier peak. Bloomberg reported on 2 September 2026 that the disaster wiped out about 10 per cent of Nepal's hydropower capacity.
-
31 August 2026New fact
Toll passes 900. UN calls it Nepal's deadliest disaster since 2015.
On 31 August 2026, Nepal's disaster authority put the death toll at 903 with 4,247 people missing. The authority said 10,451 people had been rescued, including 252 foreign nationals. Nepal declared a flood emergency in 15 municipalities. Nepali, Indian and Chinese teams worked together at hydropower tunnels. The United Nations said the flood was Nepal's deadliest disaster since the April 2015 earthquake. Chinese authorities reported at least 16 dead and 546 missing on the Tibet side.
-
1 to 2 September 2026New fact
Toll reaches 1,127. Marsyangdi crosses the danger mark. Fifth Indian aircraft leaves.
Nepal Police put the death toll at 1,127 on 2 September 2026. Nine of the bodies were recovered in India. Late on 1 September 2026, the Marsyangdi river in Lamjung crossed the danger mark. India's fifth relief aircraft left on 2 September 2026 with an 11-member rescue team and 5.5 tonnes of medicines. The Ministry of External Affairs said 163 Indians had been rescued in Nepal. Nepal's embassy in India asked donors on 1 September 2026 to use UPI International for the relief fund.
-
2 September 2026, nightOfficial response
Nepal seeks climate compensation from India, China and the United States
Nepal's Foreign Minister Shisir Khanal spoke to Kantipur TV in an interview broadcast this week. Khanal said China, the United States and India have made 'extremely large' contributions to climate change. Khanal said smaller nations are 'enduring the price of it'. Khanal said Nepal will raise the matter on international platforms as a question of justice. Nepal has sought urgent relief from the UN Fund for Responding to Loss and Damage. Nepali officials wrote to the fund that waiting for its board meeting in December would be too late. The demand comes before COP31 in Antalya in November 2026. Bloomberg reported the interview on 2 September 2026.
Why it matters for UPSC
The flood is a GS Paper 3 topic on disaster management and a GS Paper 2 topic on India's neighbourhood. The rivers are a GS Paper 1 topic. The 2026 flood began with a glacier collapse, not a lake burst. The United States Geological Survey found a glacier collapse and debris flow. The July 2025 flood on the same river was a glacial lake outburst flood. Also separate 'missing' from 'dead'. Nepal Police and the disaster authority publish different counts. India offered NDRF teams. Nepal took only expert help.
Key terms
Sources (17)
- UN OCHA · official · Nepal Flash Floods: Rapid Situation Overview (27 August 2026)2 Sep, 5:40 pm
- Business Standard · From Rasuwa to Bihar: How Nepal's flash floods can travel into India (27 August 2026)2 Sep, 5:40 pm
- United States Geological Survey · official · M 5.2 Landslide - 55 km NW of Kodari, Nepal (event page, updated 26 August 2026)2 Sep, 5:40 pm
- Akashvani News · official · Bihar on high alert following flash flood in Nepal (27 August 2026)2 Sep, 5:40 pm
- Business Standard · Day after Nepal floods, Gandak river water level recedes in Bihar (27 August 2026, PTI copy)2 Sep, 5:40 pm
- The Tribune · Nepal floods: High alert in parts of UP; vulnerable rivers being monitored, rescue team ready (27 August 2026, PTI copy)2 Sep, 5:40 pm
- Ministry of External Affairs · official · Indian Response and Relief Efforts after the Devastating Flash Floods in Nepal (29 August 2026)2 Sep, 5:40 pm
- The Tribune · India provides 68.5 tonnes of relief, Bailey bridge, tunnel expertise to flood-hit Nepal (30 August 2026, PTI copy)2 Sep, 5:40 pm
- Reuters · Nepal needs help in technical areas, not search and rescue: Foreign min (29 August 2026, Reuters copy in Business Standard)2 Sep, 5:40 pm
- Business Standard · India geared up to supply more power to Nepal amid flash floods (30 August 2026)2 Sep, 5:40 pm
- Bloomberg · Fatal Floods Expose Threats to Hydropower in the Roof of the World (2 September 2026)2 Sep, 5:40 pm
- UN OCHA · official · Nepal: Rasuwa Flood Flash Update #4 (as of 31 August 2026)2 Sep, 5:40 pm
- UN News · official · Nepal flooding deaths surpass 900 as needs climb (31 August 2026)2 Sep, 5:40 pm
- Deccan Chronicle · Nepal Issues Flood Alert As Water Levels Rise In Major Rivers (2 September 2026)2 Sep, 5:40 pm
- ANI · 5th Indian aircraft with rescue team and 5.5 tonnes of medicines departs for Nepal (2 September 2026)2 Sep, 5:40 pm
- Business Standard · UPI International, built for tourists, now helps with donations for Nepal (1 September 2026)2 Sep, 5:40 pm
- Bloomberg · Floods aftermath: Nepal seeks climate compensation from India, China, US (2 September 2026)3 Sep, 12:10 am