Flash floods in Nepal's Rasuwa district killed dozens of people and left hundreds missing this Wednesday [1], [2].

The disaster has triggered an emergency response across borders, as Indian states Bihar and Uttar Pradesh monitor river levels to prevent further casualties. Because the Rasuwa district borders Tibet, the resulting water surge threatens downstream regions in India.

Casualty reports vary across sources. One report said at least 95 people have died [1], while another listed 46 deaths [2]. The number of missing persons also shows a wide range, with one source reporting nearly 500 people missing [1] and another specifically noting that 105 Indians are missing [2].

Officials in Bihar and Uttar Pradesh have placed their regions on high alert. The focus remains on the Gandak and Narayani rivers, where a sudden surge of water from the Nepal floods could cause secondary flooding in Indian plains [1].

The National Disaster Response Force (NDRF) has placed teams on standby in Bihar to handle potential evacuations or rescue operations [2]. These teams are coordinating with local officials to monitor the Gandak River's water levels in real time.

Emergency crews in Nepal continue to search for survivors in the Rasuwa district. The rugged terrain and the scale of the flash floods have complicated efforts to locate the missing [1].

Flash floods in Nepal's Rasuwa district killed dozens of people and left hundreds missing

The discrepancy in casualty numbers reflects the chaos of an unfolding disaster in a remote region. The high alert in Bihar and Uttar Pradesh underscores the transboundary nature of Himalayan river systems, where environmental disasters in Nepal frequently create immediate humanitarian and infrastructure risks for downstream Indian populations.