Heavy rain submerges Sino-Russia border island | Russia Beyond The Headlines ASIA Continuous downpours and water discharges from a reservoir along a China-Russia border has submerged part of Heixiazi Island (known as Bolshoy Ussuriysky Island - Wikipedia, the free encyclopedia in Russia) shared by two countries. According to China's state-run Xinhua news agency, about 90 per cent of its part belonging to China was under water on Sunday. More than 300 workers have been evacuated from the island, and all construction projects have been suspended. Tourists have been advised not to visit the island. Officials in Heilongjiang Province have warned that the whole land mass of 335-square-km, which has an average altitude of 37 meters above sea level, might be fully submerged on Wednesday. In 2008, Russia finally settled a border dispute with China by equally dividing Bolshoi Ussuriysky Island (Heixiazi in Chinese), which is located at the confluence of the Ussuri and Amur rivers (known in China as the Heilongjiang River). Heavy rain has hit the area since July, leaving floodwater from tributaries to flow into Amur River.