How to view the flood conditions of the Pearl River Basin this year

Xinhua News Agency, Guangzhou, June 23rd: How to view the flood conditions of the Pearl River Basin this year

Xinhua News Agency reporter Tian Jianchuan

Recently, the Pearl River Basin suffered a flood disaster, among which the Peer of floods appeared in the Beibei River. What are the characteristics of the Flood in the Pearl River Basin this year? Why is the flood aggressive? Experts from the Pearl River Water Resources Commission of the Ministry of Water Resources conducted an analysis and interpretation.

At present, the dried floods of Beijiang are falling slowly, and the Guangdong Provincial Flood Control and Wind and Wind and Wind and Wind and Wind and Wind and Wind and Wind and Wind and Wind and Wind and Wind Headquarters have adjusted the emergency response of the flood prevention level Ⅰ to the emergency response of the flood prevention level II on the 23rd.

The Guangdong Provincial Emergency Management Department reported on the 23rd that the rainfall in the province was significantly weakened, and the precipitation during the flood season was basically over, and the weather was sunny in the next week. Flood prevention work has been transferred from the heavy rain and flooding stage to the defense flood peak transit stage.

In the Beijiang side, the dry flow of Hongfeng has passed the Shaoguan Station on the evening of the 21st; at 14:00 on the 22nd, the Yingde Station was 35.97 meters and the super warning was 9.97 meters. The flood report issued by the Ministry of Water Resources on the 21st shows that the flood of Xijiang No. 4 this year is evolving. The three defense departments of Guangdong Province predict that Zhaoqing City Fengjiangkou Station is expected to leave the peak on the morning of the 23rd, and the Hongfeng water level super warning is 2.7 meters.

According to the Pearl River Commission, since the end of May, due to the heavy rainfall, the Xijiang River in the Pearl River Basin has occurred four times in a row of floods, and the embankment along the banks along the river has been running at a high water level for a long time. Beijiang has occurred twice in a row, of which No. 2 floods are the Great floods.

Rainstorms and floods caused severe disasters in Guangdong, Guangxi and other places. The Guangdong Provincial Department of Emergency Management reported that as of 11:00 on the 20th, a total of 479,600 people in Shaoguan, Heyuan, Meizhou, Zhaoqing, Qingyuan and other places suffered a disaster and collapsed 1,729 houses.

On June 23, rescue workers transferred the masses in Yongde Town, Yingde City, Guangdong Province. Xinhua News Agency reporter Deng Hua

When it comes to the Flood prevention of the Pearl River, we need to mention "Dragon Boat Water" first. "Dragon Boat Water" generally refers to the continuous large -scale precipitation in Guangdong, Guangxi, and Fujian area around the Dragon Boat Festival (late May to mid -June) each year (late May to mid -June). During this year's "Dragon Boat Water", the average cumulative rainfall in Guangdong and Guangxi, located in the Pearl River Basin, had reached 482 mm, which was nearly 60 % of the same period for many years. It was the strongest "Dragon Boat Water" in the past 15 years.

According to the statistics of the Pearl River Committee, since May, the Pearl River Basin has continuously appeared 11 consecutive heavy rainfall process, and the rainfall area has overlaped high. It has basically concentrated in the northern and eastern parts of the Pearl River in the Hongshui River, Liujiang, Guijiang, Beijiang, Dongjiang, and Hanjiang. The water content of the large -scale area of ​​the basin is completely saturated, and the small and medium reservoir is basically full.

Why is the Pearl River Basin "Dragon Boat Water" this year? Qian Yan, deputy director of the Pearl River Committee, said that the South China Sea summer season broke out in May 3rd this year, which was 1st (5 days) earlier than the same period of the same year. After the outbreak of the South China Sea summer wind, the warm and humid airflow in the southwest was significantly enhanced. At the same time, the subtropical high -pressure position was west and relatively stable. The warm and humid air was transported along the side high edge to the Pearl River Basin, which was conducive to rainfall. At the same time, this year's cold vortex activities are more active, prompting cold air to continue to south. The cold and cold air meets over the Pearl River Basin to form a continuous heavy rainfall weather.

On June 22, the Xingxing Village, Zhangjiang Town, Qujiang District, Shaoguan City, Guangdong. Xinhua News Agency reporter Deng Hua

As the two major streams of the Pearl River Water System, the importance of flood prevention in the Xijiang and Beijiang River is self -evident. After the two rivers meet in Foshan, Guangdong, they will be converted into the economically developed Pearl River Delta.

Flood defense must use scientific and technological means to do a good job of forecasting and early warning, but also reduce the flood peak through scientific scheduling. In order to avoid the encounter of the Hongfeng of the Xijiang and Beijiang, the Pearl River Commission enabled the flood of 24 large and medium -sized reservoirs in the Xijiang dry tributaries. At present, the upstream reservoir group in Xijiang has stopped 1.4 billion cubic meters of floods. Give full play to the key role of Guangxi Dato Gorge Water Conservancy Hub, and by leak 700 million cubic meters of library library capacity in advance, the floods and flood peaks in the Xijiang River will be effectively reduced to effectively reduce the pressure of flood prevention in the middle and lower reaches of the Xijiang River.

In response to the water conditions, work, and disaster conditions of the Beijiang Grand flood, the Pearl River Committee has proposed the proposal plan of the Beijiang flood scheduling of the Flying Gorge Reservoir, the flood de of the flood de of the flood area, the Lu Baoyong, and the southwest flood. Flood defense work, make every effort to ensure the safety of flood prevention in the Pearl River Delta.

It is predicted that from June 27th to 29th, a new round of heavy rainfall will occur. In the later period, the Pearl River Basin is about to enter the active period of typhoons, and the typhoon that is expected to affect and land on the Pearl River Basin may be too high and strong, and the flood prevention situation is severe and complicated.

The Pearl River Commission stated that it will continue to strengthen monitoring and forecasting and early warning, do a good job in flood control scheduling of backbone engineering, strengthen the inspection and defense of high water levels and reservoirs, and do a good job in the defense of small and medium -sized rivers and flood disasters, and carry out the investigation and rectification of hidden dangers of flood prevention.

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