Fresh flood risk persists downstream of Nepal’s Bhote Koshi as new lake forms
A new barrier lake has formed near the Nepal-China border, creating a significant risk of flooding for downstream areas along the Bhote Koshi River. Authorities are monitoring the site, which contains millions of cubic meters of water, following a recent devastating flood event.
Why it matters
The potential breach of this lake poses an immediate threat to life and infrastructure in the region, requiring urgent disaster management coordination.
A fresh flood risk persists in downstream areas of the Bhote Koshi River in Nepal's Rasuwa district after a new barrier lake formed near the river's source, with Chinese authorities warning that the lake could breach, officials said on Thursday.
Follow the updates of the Nepal flash floods on August 27, 2026.
The Department of Hydrology and Meteorology (DHM) said it had received information from the Chinese side about the formation of a lake at a river blockage site near the Nepal-China border.
The information was conveyed to Nepal's Ministry of Foreign Affairs by the Chinese government, according to the department.
Chinese authorities have estimated that around 2 million cubic metres of water had accumulated in the lake by Thursday (August 27, 2026) morning, while another 3 million cubic metres could enter it over the next three days, raising concerns about a possible breach.
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