Many rivers that flow through northern Bihar begin in or pass through Nepal's Himalayan catchments before entering India and joining the Ganga. Heavy rain, lan…
On 25 April 1954, India and Nepal signed the Agreement on the Kosi Project, letting India build a barrage and headworks near Hanuman Nagar on Nepali territory, with floo…
In 1959, India and Nepal agreed to build a barrage on the Gandak — called the Narayani in Nepal — near Valmikinagar, to irrigate farmland across Uttar Pradesh, Bihar and…
On 18 August 2008, the Kosi burst its eastern embankment at Kusaha, about 13km upstream of the Kosi Barrage and 8km north of the India border. The river abandoned its en…
India's Central Water Commission runs a long-standing flood forecasting and warning arrangement with Nepal covering rivers the two countries share. Nepal's Department of…
ICIMOD, Nepal's Department of Hydrology and Meteorology and Sustainable Eco Engineering installed community-based flood early-warning sensors along the Ratu River in Mah…
In 2019, a major flood swept across 12 districts of the Koshi basin within 24 hours, affecting more than 2.5 million people as the Koshi rose above its danger level and…
In late August 2026, a glacier and bedrock collapse high on the Langtang-Lirung massif sent avalanches and debris flows down the Trishuli River valley, straddling Rasuwa…
As of 6 September 2026, over 19 lakh (1.9 million) people across 11 Bihar districts were affected by flooding. The Gandak (at Dumariaghat and Hajipur), Kosi (at Baltara…
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