Beijing: A large barrier lake formed near the confluence of two rivers in Nepal poses a "high risk of a breach," China said Thursday, a day after catastrophic flash floods and landslides hit the China-Nepal border region, according to Chinese state media.

According to Anadolu Agency, China's Water Resources Ministry reported that a "significant barrier" lake has formed near the confluence of the Chhochen Khola and Purepu Tsangpo rivers in Nepal, as per the Beijing-based daily Global Times. The water volume in the lake is estimated at 2 million cubic meters (70 million cubic feet) as of Thursday, and the lake is "already overflowing," the ministry noted.

The ministry further warned that another 3 million cubic meters of water is expected to flow into the lake over the next three days, posing a high risk of a breach. The Chhochen and Purepu rivers, originating in Tibet, merge before crossing into Nepal, where they are known as the Bhotekoshi, the main tributary of the Trishuli River.

This warning was issued 24 hours after massive flash floods and mudslides, caused by a glacial collapse in the Himalayas, resulted in approximately 292 deaths. Over 1,300 people, including nearly 900 foreigners, remain missing on both sides of the border. The water surge on Wednesday led to flooding in the Bhotekoshi River in Rasuwa, northern Nepal.

The flash floods and mudslides swept through the Timure and Syaphrubesi areas, causing widespread devastation, before flowing downstream toward the Trishuli River. Nepal has confirmed 289 deaths, while China reported three casualties in southwestern China's Xizang Autonomous Region, also known as Tibet.