Kathmandu/New Delhi, August 26: A devastating flash flood in Nepal's Rasuwa district near the Tibet border has triggered a major rescue operation, with nearly 400 people reported missing and at least 95 deaths reported in Nepal. Among those missing are more than 100 Indian nationals and dozens of non-resident Indians, turning the disaster into a major concern for both Kathmandu and New Delhi.
The catastrophe has also raised fears in neighbouring India. Authorities in Bihar and Uttar Pradesh have moved onto high alert because rivers originating in or flowing through Nepal can rapidly carry large volumes of water downstream into northern India. The Narayani, known as the Gandak in India, is one of the key river systems linking the two countries and makes developments upstream particularly important for Bihar and eastern Uttar Pradesh.
Balen Shah calls for national unity
Nepal Prime Minister Balen Shah has appealed for unity as emergency teams work to locate survivors and missing people following the sudden flooding.
The scale of destruction has put Nepal's rescue agencies under enormous pressure. Roads and bridges have been damaged, communications disrupted and access to affected areas made difficult by mud and debris.
The disaster has also created a significant humanitarian challenge because many of those missing were travellers moving through the region, including Indian nationals and other foreign visitors.
Shah's call for unity comes at a moment when the immediate priority is shifting away from politics and towards rescue, relief and the restoration of essential services.
More than 100 Indians among the missing
One of the most worrying aspects of the disaster for India is the large number of Indian nationals believed to be missing.
According to the latest reports, at least 105 Indians and 37 NRIs are among nearly 400 people reported missing following the flash floods. Many travellers were in the region for pilgrimage and tourism.
The exact number could change as authorities establish contact with travellers and families. Communication failures and the destruction of roads and other infrastructure have made it difficult to determine the precise whereabouts of everyone who was in the affected area.
For families in India, the uncertainty is particularly distressing because a person being listed as missing does not necessarily mean that they have died. Rescue teams are continuing to search affected locations and establish contact with survivors.
What triggered the catastrophic flooding?
The flooding occurred in the Lhende Khola/Bhotekoshi river system near the Nepal-Tibet border.
Initial reports indicate that an earthquake-induced ice-and-rock avalanche blocked the river before a sudden release of water produced a powerful flood surge. The resulting torrent swept through settlements and damaged roads, bridges, power infrastructure and other facilities.
The event illustrates the particular vulnerability of the Himalayan region, where steep terrain, unstable slopes, glaciers and rapidly changing weather conditions can combine to produce extremely destructive floods.
The disaster also struck an area that is strategically important for cross-border movement between Nepal and Tibet, increasing the impact of the damage to roads and transport infrastructure.
Rescue operations face major obstacles
Rescue teams are facing difficult conditions.
Large quantities of mud, rocks and debris have covered roads and other access routes. In some locations, the terrain has become too unstable or inaccessible for conventional rescue operations.
Reuters reported that communications and power links were cut in parts of the affected region, while rescue operations were complicated by heavy sediment and difficulties in landing helicopters.
The situation has required coordination between several agencies and countries. Chinese rescue personnel have been operating on the Tibet side, while India has offered support to Nepal.
The priority remains locating missing people, evacuating those trapped in dangerous areas and providing food, medical assistance and other emergency supplies.
Why Bihar and Uttar Pradesh are on alert
The disaster is not confined to Nepal's borders.
India's Bihar and Uttar Pradesh are particularly sensitive to major changes in water levels in rivers flowing from Nepal.
The Narayani River becomes the Gandak after entering India and eventually flows through Bihar. Any sudden increase in upstream water can therefore have consequences downstream.
Bihar is especially vulnerable because large parts of the state lie in low-lying river basins. The state's flood risk is compounded by the fact that several major rivers—including the Gandak, Kosi and Bagmati—originate in or receive substantial flows from Nepal.
Authorities are consequently monitoring river levels and preparing for the possibility that additional water could move downstream.
The objective of the alerts is not necessarily to suggest that catastrophic flooding will occur across Bihar or Uttar Pradesh. Instead, the precautionary measures are intended to give authorities time to respond if water levels rise rapidly.
India offers help to Nepal
The disaster has also prompted direct communication between the governments of India and Nepal.
Prime Minister Narendra Modi spoke with Balen Shah, expressed condolences over the loss of life and conveyed India's solidarity with Nepal. India has indicated that it is prepared to provide humanitarian assistance, rescue support and relief material.
Such coordination is particularly important because the disaster has affected Indian citizens while also creating a potential downstream flood threat for Indian states.
For New Delhi, the immediate priorities are therefore twofold: helping Nepal manage the humanitarian emergency and ensuring that Indian authorities are prepared for any impact on communities downstream.
A disaster with regional consequences
The Nepal floods demonstrate how closely connected the Himalayan region is.
A disaster in the mountains can quickly become an international emergency because rivers, roads, trade routes and communities cross national boundaries.
Nepal's mountainous geography means that flash floods can develop rapidly, leaving little time for evacuation. Once floodwaters move downstream, countries such as India can also face consequences.
The incident therefore reinforces the importance of cross-border early-warning systems, real-time river monitoring and coordinated disaster-response mechanisms between Nepal, India and other countries in the Himalayan region.
The human crisis comes first
While the number of deaths and missing people is still being assessed, the most urgent concern remains the families waiting for information about their loved ones.
For the more than 100 Indians reported missing, authorities will need to work quickly to establish identities, locate survivors and provide reliable information to relatives.
At the same time, Nepal faces the enormous task of restoring damaged infrastructure and supporting communities that have lost homes, roads, power supplies and other essential facilities.
The coming hours will be crucial. Rescue teams must work through difficult terrain while authorities monitor rivers for possible downstream impacts.
For Nepal, Prime Minister Balen Shah's appeal for unity comes as the country confronts one of its most serious recent flood emergencies. For India, the disaster is both a humanitarian concern and a warning that events in Nepal's river basins can have immediate consequences across the border.
With rescue operations continuing and Bihar and Uttar Pradesh on alert, the focus now is firmly on saving lives, finding the missing and preventing the disaster from becoming an even wider regional crisis.