Juan. G. R. Effects and recommendations on the floods in China 2012
Water and Irrigation. Volume: 3, No. 1:6-8, September, 2012, Spain.
At the end of the summer of 2012 are affected by flooding and high winds, 22 of the 30 governments that has China, including the four municipalities. It is estimated that economic losses in the spring-summer period are higher at 30,000 million euros. It is believed that the deads and missing exceeding 200 people, there are tens of millions homeless and more than 4 million hectares of crops damaged. Further increase is necessary: the capacity of sewerage networks in cities, drainage from agricultural areas, the protection of cities against floods, reforestation of watersheds and removal of silt in rivers.
Heavy rainstorms during the spring 2012
The comprehensive report has been compiled from the news released by the Xinhua News Agency, euronews, Google and China’s basic information, enriching the content with the author’s experience in terms of flooding.
-On April 29 as cause of a rainstorm in Guangdong province in southern China, four people were injured as a result of torrential rains, Xinhua.
-In mid-spring 2012, on 16 May, heavy rain and hail storms, affecting especially the provinces of Gansu, Hunan and Jiangxi located northwest, south central and east respectively, leaving 1 million hectares of crops affected and about 13 million affected.
– In late May the 30th, heavy rains affected the province of Guangdong to the south of the country, causing a mudslide that killed four people and destroyed about 800 homes.
– In mid-June the 11th, heavy rains affected the Hunan province and the island of Taiwan, causing flooding and mudslides.
Bad weather, flooding and destruction of several typhoons in summer 2012
-At the beginning of summer, on July 11, rain, hail and strong winds affected the provinces of Sichuan and Guizhou and Chongqing Municipality, located in the southwest, as the provinces Hubei, Hunan, located in south central and the provinces of Jiangsu and Anhui, located east, affecting more than 7 million people, leaving more than 30 dead, flooding more than 500, 000 hectares of crops, the economic losses are estimated at about 6000 million dollars
-During 10 days, causing havoc and death, bad weather arrives July 21 north of the country affecting Beijing, the capital and Hebei Province. Torrential rains did not affect Beijing for 60 years, which brought about consequences not take all necessary protective measures. In Beijing at Fangshan district fall 460 mm rain.
-In the country a total of 17 of the 30 administrations that China has, have suffered damage to infrastructure, telecommunications, collapsed houses, flooded crops areas and millions of people affected, and there are 95 deads. Notably, the Three Gorges Dam on the Yangtze River located in Hubei Province has successfully passed the test of floods. The Yangtze River with an approximate length of 6300 km is the longest in Asia, has an average flow of 31,900 m / s and a basin of 1,800,000 km2, which is home to about 400 million people. -On July 24,the strong winds and storms caused by Vincent typhoon hit Special Administrative Region of Hong Kong and Guangdong province in southern China, canceled flights on Hainan Island.
-Recent rains have raised the water level of the Yellow River, which recorded its highest flood in the last 23 years, were evacuated by the flood on July 28, more than 40,000 people in the middle basin of the river, in the interior provinces Shanxi and Shaanxi in the north. The Yellow River is the second largest river in China with a length of 5464 km, is characterized by having a basin of 752.000 km2, have an average flow of 2571 m3/sec., drag annually million tons of sediments and support a population of 172 million people, the last major natural disaster related to the Yellow River floods were 1931, which killed an estimated between 1,000,000 and 3.7 million people.
– In late July continued counting victims of the worst rains in six decades in China, already reached the figure of 111 deaths of which 77 correspond to Beijing, which reports economic losses in the capital of 1600 million dollars.
– The low air pressure in the China Sea in early August, allowed the arrival of two typhoons, the Saola, the Damrey and on the days 2th and 3th with a difference of 10 hours. The combined action of typhoons Saola-Damrey caused heavy rains and floods with winds that reached 150 Km / hour, affecting the provinces of Shandong, Jiangsu, Zhejiang and Fujian ,Jiangxi to the east of China, the province of Hebei and Tianjin Municipality to the north and the northeast Liaoning province according to Xinhua. In Fujian and Zhejiang provinces were fall 300 mm rain.
-In less than a week on the 8th of August another typhoon, Haikui, hit the east coast of China, affecting Zhejiang Province and Shanghai Municipality, prompting the evacuation of about 2 million people, about 180.000 ha of crops were completely destroyed, the economic losses in the area is estimated at about 1,300 million euros. According to Xinhua News Agency three consecutive typhoons “Saola”, “Damrey” and “Haikui” that hit China’s coastal areas, have caused 51 deaths and the disappearance of 21 people, affected more than 30 million people, destroyed 88,000 homes and damaged 2.3 million hectares of crops, the direct economic losses have exceeded 10,240 million dollars.
-On August 18 Typhoon Kai-Tak, the thirteenth plaguing China so far this year, passing through the province of Guangdong and Guangxi both south, one person has died, two are missing and nearly two million affected, hundreds of homes damaged, losses are estimated in the region of $ 315 million according to Xinhua.
-On September 2 as two months ago, there were severe floods in southwest China’s Sichuan Province and Chongqing Municipality, evacuating hundreds of thousands of people and leaving 12 dead and 15 missing. -Later on 11 September in a matter of hours, a heavy rain has caused severe flooding, rains have fallen in the region 257 mm in just six hours. This is the town of Yiliang located in southwest Yunnan province of China, the area was rocked by 16 aftershocks 4 days ago, an earthquake registering 5.7 degrees of scale, which killed 81 people.
-At the end of the summer of 2012 are affected by flooding and high winds, 22 of the 30 governments that has the country, including the four municipalities. It is believed that the deads and missing exceeding 200 people, the victims totaling tens of millions of people. There are many resources damaged, homes and infrastructure, and more than 4 million hectares of crops. An estimated total economic losses in the spring-summer period are higher than the 30 billion euros.
Flood control in China The Chinese government has made great efforts in the fight against flooding, to reduce human, material and economic losses, but it is necessary to increase even more: the drainage of agricultural areas, the protection of cities flood, cleaning of canals and watersheds, cleaning reservoirs and the removal of silt that drag the tributaries and rivers. Many cities in China are densely populated and sewers must be recalculated to evacuate water for cities in shorter time, to reduce flood damage and cope with the new challenges of climate and climate change. Must increased reforestation in the basins of the rivers to increase the delay time of floods, improve the environment and reduce sediment entrainment. Measures must streamlined forecasting and warning of rains and rainstorms in the fight against flooding, to reduce damage to a minimum.