New Delhi: Nature knows no borders, and the devastating flash floods in Nepal have once again highlighted how closely India’s northern plains are connected to the Himalayan river systems. As floodwaters surged through Nepal, authorities in Bihar and Uttar Pradesh were placed on alert because the same river system continues into India as the Gandak.
One river, two names
The river is known as the Narayani in Nepal and the Gandak in India. Originating in the Himalayan region, it crosses into India at Triveni Dham and reaches Valmikinagar in Bihar.
From there, the Gandak flows through parts of Uttar Pradesh and Bihar before joining the Ganga near Hajipur and Sonepur.
This interconnected river system means that a significant rise in water levels upstream in Nepal can have consequences for communities downstream in India.
Nepal floods trigger concern in India
According to Nepal’s National Disaster Risk Reduction and Management Authority, a glacial lake outburst and subsequent avalanche triggered devastating flash floods in the affected region.
The Bhote Koshi River, which has its origins in Tibet, also feeds into the Trishuli river system and ultimately the Narayani-Gandak basin. The massive surge of water caused widespread destruction in Nepal and raised concerns about downstream river levels.
A rise in Nepal’s Narayani can consequently affect the Gandak in India, increasing the flood risk in eastern Uttar Pradesh and northern Bihar.
Bihar opens all 36 barrage gates
Bihar authorities have stepped up vigilance in several districts, including West Champaran, East Champaran, Gopalganj, Saran, Muzaffarpur and Vaishali, along with other vulnerable areas.
All 36 gates of the Gandak Barrage at Valmikinagar were opened on Wednesday as part of precautionary measures. Around 86,000 cusecs of water were reportedly discharged from the barrage around noon.
A technical team led by a Superintending Engineer was also deployed at the barrage, while warnings were issued to districts located in the Gandak river basin.
Uttar Pradesh villages placed on alert
In Uttar Pradesh, Maharajganj and neighbouring Kushinagar were placed on alert amid rising water levels in the Gandak and Narayani rivers.
Authorities in Kushinagar ordered evacuations from Marchahwa, Shivpur and other villages, with public announcements urging residents to move to safer locations.
Rivers remind us that borders cannot stop nature
The situation shows how events in the Himalayan region can quickly become a concern for communities hundreds of kilometres downstream.
Political boundaries may separate Nepal and India, but rivers continue to follow their natural courses. The Gandak-Narayani system is a powerful reminder that disaster preparedness along shared river basins requires vigilance and coordination on both sides of the border.