Beijing: Rain Records have flooded Central China with floods that attack subway systems, damage the dam and rivers, and cause landslides and buildings collapse.
Beijing has tied up a large-scale dam network as a drug for destroying annual floods, but delicker in recent years has killed hundreds of people and soaking thousands of houses.
Here are five questions about why China still experienced severe flooding every year.
China has historically depend on dam, embankment and reservoir to control the flow of water.
About 30 billion cubic meters of flood water were intercepted last year by the dam and reservoir on the longest river of Asia, Yangtze, reducing downstream flooding in areas including Shanghai, the Chinese emergency management ministry said.
But the vast water management scheme in the country cannot contain all floods while there are questions about the durability of the dam built a decade ago.
On Tuesday night, the army warned damaged dam in Henan Province “it could collapse anytime” after a rain record.
The troops detonated a hole in the dam to release water and race to strengthen other embankments with sandbags in all provinces.
Last year, the authorities in the province of Anhui Timur were forced to blow up two dams to release water from Chuhe River Rising on agricultural land.
And fear of reappearing regularly for the structural integrity of the three dam gorges in Yangtze above, the world’s largest hydroelectric dam, which was built in intermittent areas with geological errors.
The burden on the Chinese dam is likely to grow as a climate change to make extreme weather events more common.
When the Earth’s atmosphere became warmer, he had more moisture, making heavy rain more intensely, Benjamin Horton, Director of the Observatory of Bumi Singapore, told AFP.
The water level reached historic highest in 53 rivers during China last year, according to the Ministry of Water Resources China, when authorities warned three Dam canyons were facing the biggest flood top since starting operating in 2003.
Meanwhile Zhengzhou, at the center of heavy rain , see the average rain value in just three days, officials said.
Li Shuo, a climate analyst for Greenpeace East Asia, told AFP that flood “rang alarm bell for China that climate change was here.” The rapid development of the country and the urbanization of Breakneck has also worsened flooding.
Urban Sprawl has covered more land in concrete that cannot be penetrated, increasing the risk of water buildup that is fast on the surface during heavy rain without water.
Horton also said that some of the big lakes had decreased dramatically.
One government solution has become the “Sponge City” program which began in 2014.
It sought to replace the unsmeable urban surface with porous materials, permeable sidewalks, more green spaces, drainage areas and reservoirs to stop accumulated water on the ground.
“The aim is that Stormwater goes into the water channel or green area, and affects the area that is built less,” Cecilia Torajada, a water policy researcher at the National University of Singapore, told AFP.
But sponge cities will be a little entertaining for rural communities in the diverted waterways, which have suffered severe damage to their homes and plants.
“While the city occupants in China Megacities mostly avoided water that rose, most of the interior of the country along the River Yangtze was placed at the front line,” Li said.
All villages were allowed to flood, with residents evacuated, to set aside densely populated cities.
In the past few days, rainwater has damaged around 20,000 hectares of plants in rural areas around Zhengzhou, Xinhua said, with direct economic costs of more than $ 11 million.
China also turned to increased flood supervision and initial evacuation to reduce human flood costs.
In addition to conventional weather monitoring technology, Anqing City in Anhui Province China uses virtual reality glasses associated with river monitoring cameras that use 5G internet to send images to inspectors, according to Xinhua.
Last year, the emergency ministry said the number of people died or lost as a result of the summer flood between June and August fell to 219, less than half the average number every year in the last five years.
However, economic costs jumped 15 percent, reaching 179 billion yuan ($ 26 billion).
Tortajada said that in the end, flood prevention would also require global action to climate change.
“While the country is getting better, the world as a whole is not prepared,” he told AFP.