China News Agency, Nanchang, July 13 (Wu Pengquan) A reporter from the China News Agency learned from the Jiangxi Provincial Flood Control and Drought Relief Headquarters that China’s largest freshwater lake, Poyang Lake, has experienced an over-historic flood, and the province is orderly opening a single diversion polder. Flood diversion.
Since July, the northeast and central Jiangxi provinces have witnessed heavy rainstorms. The water level of the rivers has risen rapidly. Over-alert floods have occurred in many rivers and Poyang Lake. The water level of Xingzi Station, the iconic hydrological station of Poyang Lake, has exceeded the historical level, and the flood control situation is extremely severe.
In the face of the extraordinary floods of Poyang Lake, Jiangxi, a province in the middle and lower reaches of the Yangtze River, played a role in the storage and storage of the main and tributary reservoirs in the Poyang Lake Basin. Under the condition of ensuring the safety of the project, the discharge flow was minimized as much as possible; The single dike levee at the flood level must enter the flood; some diversion levees should be guided to prevent floods.
The Jiangxi Provincial Flood Control and Drought Relief Headquarters has issued a notice requesting that all single diversion polders in Poyang Lake District must be opened on July 13 to clear the weir and flood storage. Before the flood diversion, the people who may appear in the polder area must be transferred in advance.
Chen Yunxiang, director of the Jiangxi Provincial Rivers and Lakes Administration, said on the 13th that the single dike dyke refers to "low water cultivation and high water storage", and construction of flood intake and drainage facilities on the dyke will be stored when it encounters floods above the flood level. In case of floods, agricultural production can still be carried out when the water level of the outer river (lake) is lower than the flood level. "Today, various regions are carrying out orderly flood diversion and flood storage for the opening of sluices and clearing weirs in the Poyang Lake area.
The reporter learned that after all the 185 single-retreat dikes in the Poyang Lake area are fully operational, it is expected that the water level in the lake area will be reduced by 25 cm to 30 cm, which can effectively reduce the flood control pressure of the Poyang Lake and the Jiujiang section of the Yangtze River. (Finish)