China orders evacuations after landslide blocks Tibet river

This image taken from video footage run on Thursday, Oct. 18, 2018 by China's CCTV via AP Video, shows a landslide and barrier lake on Yarlung Tsangpo in Tibet in western China. Thousands of people have been evacuated following a landslide in Tibet that blocked the flow of one of the region's key rivers, China's emergency services said Thursday. Headlines in Chinese reads: "Oct. 17 footage provided by firefighter" "natural disaster emergency protocol activated."(CCTV via AP Video)
In this image from video footage run on Thursday, Oct. 18, 2018, by China's CCTV via AP Video, emergency response team prepare to deploy after a landslide formed a barrier lake on Yarlung Tsangpo in Tibet in western China. Thousands of people have been evacuated following a landslide in Tibet that blocked the flow of one of the region's key rivers, China's emergency services said Thursday. Yellow headline in Chinese reads: "Formed 300 meters by 200 meters barrier." (CCTV via AP Video)
In this image taken from video footage run on Thursday, Oct 18, 2018 by China's CCTV via AP Video, a military helicopter deploys after a landslide formed a barrier lake on Yarlung Tsangpo in Tibet in western China. Thousands of people have been evacuated following a landslide in Tibet that blocked the flow of one of the region's key rivers, China's emergency services said Thursday. (CCTV via AP Video)
In this image taken from video footage run on Thursday, Oct 18, 2018, by China's CCTV via AP Video, a view of the landslide and barrier lake is seen on Yarlung Tsangpo in Tibet in western China. Thousands of people have been evacuated following a landslide in Tibet that blocked the flow of one of the region's key rivers, China's emergency services said Thursday. Headlines in Chinese reads: "Oct. 17 footage provided by firefighter" "around 6,000 people evacuated." (CCTV via AP Video)

BEIJING — Chinese emergency services said Thursday that about 6,000 people were evacuated after a landslide in Tibet blocked the flow of one of the region's key rivers, creating a lake that could endanger downstream areas in India.

The collapse Wednesday morning of a cliff in the deep valley through which the river flows created a dam-like barrier on the Yarlung Tsangpo, the headwater of India's Brahmaputra River, the local emergency response bureau said in a report carried by state media.

The landslide struck near a village in Menling County and water in the lake had risen to a height of 40 meters (130 feet) by Thursday, the bureau said.

No deaths or injuries were reported and the bureau said China has been keeping India updated on the blockage.

Authorities in northeastern India issued an alert warning villagers in the East Siang district of Arunachal Pradesh, the state bordering China's Tibet region, not to venture near the river.

District magistrate Tamiyo Tatak said water levels in the river had fallen drastically and once the blockage was cleared in China, water might suddenly rush downstream, causing a disaster in India.

In June 2000, a sudden high discharge of water from the Yarlung Tsangbo caused extensive damage in Arunachal Pradesh and other downstream areas in India.

With its towering peaks and glaciers, Tibet is the source of numerous Asian rivers, adding to China's strategic influence over its southern neighbors. Fast-rising temperatures have caused those glaciers to melt at an increasing pace, throwing a shadow over future water resources for China and other Asian nations.

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Associated Press writer Wasbir Hussain in Gauhati, India, contributed to this report.

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