China might turn off Asia's tap

Even after Asia’s economies climb out of the COVID-19 recession, China’s strategy of frenetically building dams and reservoirs on transnational rivers could confront them with a more permanent barrier to long-term economic prosperity: water scarcity. China’s recently unveiled plan to construct a mega-dam on the Yarlung Zangbo River, better known as the Brahmaputra, might be the biggest threat yet.

China dominates Asia’s water map, owing to its annexation of ethnic-minority homelands, such as the water-rich Tibetan Plateau and the Xinjiang region. China’s territorial aggrandizement in the South China Sea and the Himalayas, where it has targeted even tiny Bhutan, has been accompanied by stealthier efforts to appropriate water resources in transnational river basins — a strategy that has not spared even friendly or pliant neighbors, such as Thailand, Laos, Cambodia, Nepal, Kazakhstan and North Korea.

China has not hesitated to use its hydro-hegemony against its 18 downstream neighbors.

The consequences have been serious. For example, China’s 11 mega-dams on the Mekong River, Southeast Asia’s arterial waterway, have led to recurrent drought downriver, and turned the Mekong Basin into a security and environmental hot spot.

In largely arid Central Asia, China has diverted waters from the Illy and Irtysh rivers, which originate in China-annexed Xinjiang. Its diversion of water from the Illy threatens to turn Kazakhstan’s Lake Balkhash into another Aral Sea, which has all but dried up in less than four decades.

Against this background, China’s plan to dam the Brahmaputra near its disputed — and heavily militarized — border with India should be no surprise. China’s state-run Global Times, citing an article in Australian media, urged the Indian government to assess how China could “weaponize” its control over transboundary waters and potentially “choke” the Indian economy. With the Brahmaputra megaproject, China has provided an answer.

The planned 60 gigawatt project, which is to be integrated into China’s next five-year plan starting in January, would reportedly dwarf China’s Three Gorges Dam — the world’s largest — on the Yangtze River, generating almost three times as much electricity. China would achieve this by harnessing the power of a 2,800m drop just before the river crosses into India.

What the chairman of China’s state-run Power Construction Corp, Yan Zhiyong (晏志勇), calls a “historic opportunity” for his country would be devastating for India. Just before crossing into India, the Brahmaputra curves sharply around the Himalayas, forming the world’s longest and steepest canyon — twice as deep as the US’ Grand Canyon — and holding Asia’s largest untapped water resources.

Experience suggests that the proposed megaproject threatens those resources — and China’s downstream neighbors. China’s past upstream activities have triggered flash floods in the Indian states of Arunachal and Himachal. More recently, such activity turned the water in the once-pristine Siang — the Brahmaputra’s main artery — dirty and gray as it entered India.

About a dozen small or medium-sized Chinese dams are operating in the Brahmaputra’s upper reaches, but the megaproject in the Brahmaputra Canyon region would enable the country to manipulate transboundary flows far more effectively.

Such manipulation could leverage China’s claim to the adjacent Indian state of Arunachal, which is almost three times the size of Taiwan. Given that China and India are locked in a tense, months-long military standoff, which began with Chinese territorial encroachments, the risks are acute.

Yet, the country that would suffer the most as a result of China’s Brahmaputra dam project is not India, but the densely populated and China-friendly Bangladesh, for which the Brahmaputra is the single largest freshwater source.

Intensifying pressure on the water supply of Bangladesh would likely trigger an exodus of refugees to India, already home to millions of illegally settled Bangladeshis.

The Brahmaputra megaproject also amounts to a slap in the face to Tibet, which is among the world’s most biodiverse regions and has a deeply rooted culture of reverence for nature. The canyon region is sacred territory for Tibetans: Its major mountains, cliffs and caves represent the body of their guardian deity, goddess Dorje Pagmo, and the Brahmaputra represents her spine.

If none of this deters China, the damage it is doing to its own people and prospects should. China’s over-damming of internal rivers has severely harmed ecosystems, including by causing river fragmentation and disrupting the annual flooding cycle, which helps to fertilize farmland naturally by spreading silt.

In August, about 400 million Chinese were put at risk after record flooding endangered the Three Gorges Dam. If the Brahmaputra mega-dam collapses — hardly implausible, given that it would be built in a seismically active area — millions downstream could die.

The Great Himalayan Watershed is home to thousands of glaciers and the source of Asia’s greatest river systems, which are the lifeblood of nearly half of the global population. If glacial attrition is allowed to continue — let alone to be accelerated by China’s environmentally catastrophic activities — China would not be spared.

For its own sake — and the sake of Asia as a whole — China must accept institutionalized cooperation on transnational flows, including measures to protect ecologically fragile zones and agreement not to dam relatively free-flowing rivers, which play a critical role in moderating the effects of climate change.

This would require China to rein in its dam frenzy, be transparent about its projects, accept multilateral dispute-settlement mechanisms and negotiate water-sharing treaties with neighbors.

Unfortunately, there is little reason to believe this will happen. On the contrary, as long as the Chinese Communist Party remains in power, the country will most likely continue to wage stealthy water wars that no one can win.

Brahma Chellaney is a professor of strategic studies at the New Delhi-based Center for Policy Research and a fellow at the Robert Bosch Academy in Berlin.

Copyright: Project Syndicate

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