A dike breach occurred in the Juanshui River in central China's Hunan Province at about 20:00 Sunday, local authorities said.
By 21:40, the breach in Yisuhe Township of Xiangtan County had widened to about 50 meters, according to the flood control and drought relief headquarters of Xiangtan City.
More than 3,100 people have been evacuated, and no casualties have been reported.
China's Ministry of Emergency Management urged efforts to evacuate the affected people, mobilize professional personnel, materials and equipment, and ensure the safety of the local people and rescuers.
An emergency rescue center under the ministry has dispatched over 200 rescuers with 110 units of equipment to the affected area to provide emergency support. Local firefighting authorities have also sent 266 rescuers, 47 vehicles and 37 boats to the area.
More than 600 soldiers stationed in Hunan Province carried with over 60 speedboats, together with 200 armed police officers, rushed to the scene for rescue tasks.
The China Railway Limited Group also sent four units of large equipment and 30 rescuers to join the rescue and evacuation operation. Local rescue teams and the Beijing Blue Sky Rescue Team have already joined the rescue efforts.
On Sunday, another dike breach occurred in a section of the Juanshui River in Huashi Township, Xiangtan County, authorities said.
The river flows into the Xiangjiang River, a major tributary of the Yangtze River.
Evacuation and emergency response efforts are still underway.
The ministry said Saturday that Hunan would experience heavy rainstorms and parts of the province would see "extremely heavy rainstorms from Saturday evening to Monday" due to the impact of Typhoon Gaemi.
Dike breaches occur in central China river, over 3,100 people evacuated
