Emergency work is underway to close a dike breach on Monday at Dongting Lake, China's second-largest freshwater lake in central China's Hunan Province.

The breach occurred at 5:48 p.m. on July 5 in Tuanzhou Township, Huarong County, administered by Yueyang City in the province, causing flooding in the area. The breach was about 10 meters wide initially but expanded to around 226 meters later. As of 6 p.m. on Monday, four vessels had been arranged to dump blocking materials into the water at a designated position every two hours, said emergency workers on site, adding that at least 40,000 cubic meters of stone and other materials are planned to be dumped on Monday.