South-to-North Water Diversion Project brings relief to Beijing’s drinking water supply

http://en.people.cn/n3/2024/1231/c90000-20260755.html

Impacted by climate change, Beijing has endured droughts in more than 10 years since 1999. A large amount of groundwater, which once accounted for more than 50 percent of Beijing’s total water usage, was exploited to satisfy the city’s demand, according to Li Minshi, who works at the Beijing hydrological station. Undesirable consequences emerged, with the groundwater depth in Beijing’s plains dropping from 7.24 meters in 1980 to 25.75 meters in 2015, and many spring water areas drying up, Li said.

A turning point was seen in 2014, when China’s South-to-North Water Diversion Project began transporting water over long distances from the country’s south to its northern regions. A large proportion of Beijing’s drinking water now travels over 1,000 kilometers along the project’s middle route from Danjiangkou Reservoir in central China’s Hubei Province. The water flows north via canals and pipelines, crossing beneath the Yellow River before reaching Beijing’s water treatment plants.

The city has received over 10.6 billion cubic meters of water through the project to date, 7.5 billion cubic meters of which has been used for piped water and directly benefited over 16 million people, with the remainder used to replenish groundwater, reservoirs, rivers and wetlands, among other water sources, according to data from the Beijing Water Authority. The depth of groundwater in Beijing’s plains has increased for nine consecutive years since 2015, rising to its current 12.31 meters. Groundwater reserves increased by 7 billion cubic meters during the same period.

In 2021, water flows returned to the Chaobai River after water was diverted from reservoirs such as those in Beijing’s Miyun and Huairou districts, which saw increasing reserve volumes. In August 2024, the first-ever cruise route on Chaobai River opened to tourists, with travelers and students now seen frequently along the banks of the river crossing Shunyi district, where they sketch and paint the beautiful scenery.

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