Risk of Lake Burst Decreases at China-Nepal Border Disaster Site

The threat of a catastrophic lake burst near the China-Nepal border has significantly diminished, according to Chinese authorities. The lake, which formed following a devastating glacier collapse earlier this week, has been slowly draining, reducing the risk of a sudden and potentially deadly overflow.

Satellite imagery from Thursday to Saturday morning indicates that the lake, located at the confluence of two rivers, has shrunk by approximately 21,000 square meters, down to a size of 99,000 square meters. This reduction is roughly equivalent to the area of 14 football fields combined. The Water Resources Ministry, cited by state broadcaster CCTV, reported these findings.

The glacier collapse on Wednesday unleashed a powerful torrent of rock, ice, mud, and debris through the Himalayan mountain river systems, sweeping away a border port complex that connects China's Tibet Autonomous Region with Nepal. The disaster has killed hundreds and left thousands missing.

Experts and authorities had warned of the high risk of secondary disasters in the valley, particularly from the lake formed by the glacier debris. This lake posed a significant threat to rescue operations downstream, potentially endangering the lives of those involved in the search and recovery efforts.

In response to the situation, China Anneng, a state-owned engineering and rescue enterprise, has been monitoring the lake since Thursday. The company dispatched a 15-member team on Friday, equipped with reconnaissance drones, portable satellite stations, and mobile surveillance cameras, to gather more data about the lake's conditions.

An overflow from the lake on Friday temporarily halted rescue work, but further assessments determined the risks to be manageable. Authorities have also flagged another larger body of water at the bottom of the glacier collapse, estimating its area to be over 120,000 square meters, but its depth remains unknown.

Flood risks will persist until both lakes have fully drained, according to an official with Nepal's Disaster Management Authority. In the meantime, more than 50 rescue workers combed through the grey rubble of boulders and mud in search of signs of life and calling out to any survivors.

The first team of rescuers and a search-and-rescue dog reached the location of the Gyirong border crossing complex on Friday afternoon, describing it as nothing but ruins. The dangerous conditions at the main disaster zone, made more complex by road and communication disruptions, continue to challenge Chinese relief efforts, according to state news agency Xinhua.

China's death toll from the disaster rose to seven early Saturday, with 554 still missing. Nearly 500 villagers and construction workers, as well as all 555 tourists from the area, have been evacuated.

The reduction in the lake's size and the ongoing efforts to monitor and manage the situation have provided some relief to the communities affected by the disaster. However, the full extent of the damage and the long-term recovery efforts are yet to be determined.