Category: Sediment

Disgorging

More on the Three Gorges Dam’s flood control capabilities and its performance in one of the wettest seasons for China since the record-breaking El Niño event of 1997-98. In this report, The Economist concludes the country’s weakened river pulse is “in danger not only from floods but from its flood controls.”

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Too many dams to look after

As China continues to embrace a new era of hydropower expansion, demand for dam inspection has outpaced the country’s supply of inspectors, ramping up safety fears for thousands of small- and medium-sized dams in China’s rural areas that have been “ignored”, reports Ecns.cn.

The myth of sustainable hydropower

2016 will be a decisive year for hydropower projects on the mainstream Mekong. Southeast-Asia based journalist, Tom Fawthrop, looks at the notion of ‘nice dams’ that supposedly don’t inflict too much damage on their surrounding environments and their opposite reality: the hidden costs of hydropower and the irreversible destruction of unique ecosystems.

Astonishing changes in the life and environment of Chongqing: 20 years after the construction of the Three Gorges Dam: Fan Xiao

Twenty years after the completion of China’s monumental Three Gorges Dam, a new study by Chinese geologist Fan Xiao finds the mega-project’s impacts on his hometown of Chongqing, some 600 kilometres upstream, have been dramatic. Lost in the dam’s grand scale are the harsh consequences borne by the region’s environment and economy; its after-effects are felt most intensely by the individuals and communities struggling to adapt in the immense shadow of China’s largest public works effort since the Great Wall.

Concern mounts in China over Yangtze diversion project

China’s ambitious South-to-North Water Diversion project officially begins flowing next month and the impacts of the costly geo-engineering giant are starting to be felt in the regions tapped to redistribute water to the country’s parched north. “This project from the beginning has been as controversial as the Three Gorges,” says Probe International fellow and leading Chinese environmental journalist, Dai Qing.

China’s Lacang River dams – impacts already ‘extensive’

Already, newly completed cascade dams along China’s Lancang River are altering the river’s hydrological regime and sediment flow, blocking fish migration and posing a risk to food security and livelihoods. As more cascade dams roll out along the Lancang, International Rivers offers a better understanding through their research of the environmental impacts of current development and what further impacts can be expected as more projects come online.

Is the Three Gorges Dam to blame for extreme drought in the Lake Poyang area?

(May 16, 2014) Lake Poyang, the largest freshwater lake in China, has in the past decade suffered record low water levels and its worst drought in 60 years. Although uneven rainfall patterns and industry on the lake are partly behind the decline in volume, the Three Gorges Dam has emerged as a major cause of the lake’s shocking dry-up. On a recent trip to China, Mu Lan, the editor of Probe International’s Chinese Three Gorges Probe news service, explored the link between Poyang’s crisis and the country’s hydro colossus.

Storm of conscience

(July 27, 2012) The force of a powerful storm that struck Beijing over the weekend has exposed massive flaws in the capital city’s antiquated plumbing infrastructure. Chinese authorities in Beijing now face a firestorm of criticism from citizens demanding to know why their drainage system—famously defined as a city’s conscience by French writer Victor Hugo—was neglected for so long. The weekend flooding has also brought into question the official death toll, which many feel the government is downplaying to offset blame for the city’s poor emergency response to a disaster that could have been more manageable.