# China Warns of High Risk of Second Flood as Barrier Lake Near Nepal-Tibet Border Overflows

- Link: https://www.weather.lk/china-warns-of-high-risk-of-second-flood-as-barrier-lake-near-nepal-tibet-border-overflows/
- Published: 2026-08-28T15:23:06+05:30
- Author: WeatherLK

China has warned of a high risk of a barrier lake near the Nepal-Tibet border breaching
its banks and causing a second major flood downstream. The warning comes just days
after a deadly flash flood struck the same region, leaving hundreds of people dead
or missing.

The barrier lake was formed after landslide debris blocked the flow of rivers near
the border. According to Chinese state broadcaster CCTV, around 2.5 million cubic
metres of water had accumulated in the lake by Friday morning. Officials expect 
another three million cubic metres of water to enter the lake, increasing the risk
of a sudden breach.

China’s Ministry of Water Resources said the lake has already begun overflowing,
while heavy rainfall in the area has added to concerns. Engineering teams have been
sent to monitor water levels and weather conditions.

The growing danger has also disrupted rescue efforts. Chinese emergency personnel
have reportedly been unable to reach areas close to Gyirong Port, a major crossing
between Nepal and China, because the lake is overflowing continuously. Search and
rescue operations near the border have been suspended due to fears of further flooding
and debris flows.

Nepali authorities have also warned residents about possible blockages and flooding
along the Bhote Koshi and Trishuli rivers. People have been advised to stay away
from riverbanks until the danger passes.

Scientists believe the earlier flash flood was triggered by the collapse of part
of a glacier near Langtang Lirung, sending a powerful surge of water and debris 
downstream. The continuing threat highlights the serious risks posed by unstable
glaciers, landslides and heavy rainfall in the Himalayan region.

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