KATHMANDU — Floods triggered by torrential rains in Nepal on Tuesday tore down a Himalayan mountain valley, sweeping away 18 people and destroying a key border bridge with China, a government official said.

One person has been confirmed dead and 17 others are listed as missing in the floods on the Bhotekoshi river, said Arjun Paudel, chief district officer of Rasuwa district.

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The wall of water that hit Tuesday morning also swept away one of the main bridges linking Nepal and China.

READ: 170 dead in Nepal floods after relentless monsoon rains

Eleven Nepalis and six Chinese people are among the missing, Nepal’s National Disaster Risk Reduction and Management Authority said.

Deadly floods and landslides are common across South Asia during the monsoon season from June to September but experts say climate change is making them worse.

The UN’s World Meteorological Organization said last year that increasingly intense floods and droughts are a “distress signal” of what is to come as climate change makes the planet’s water cycle ever more unpredictable.

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READ: 101 dead in Nepal floods after relentless monsoon rains

The Kathmandu-based International Centre for Integrated Mountain Development (ICIMOD) warned in June that communities face heightened disaster risks this monsoon season.

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“Rising temperatures and more extreme rain raise the risk of water-induced disasters such as floods, landslides, and debris flows,” ICIMOD said. /dl