Major Study Warns Planned Dams May Severely Harm Mekong Delta

A major new study warns that a planned cascade of hydropower dams along the Mekong River could cause “very high adverse effects on some of the key sectors and environmental resources in Cambodia and Viet Nam.”

Viet Nam’s Ministry of Natural Resources and Environment has just publicly released “Study on the Impacts of Mainstream Hydropower on the Mekong River”, also known as the “Delta Study.” The study used models to simulate various dam construction scenarios. And the results raise alarm bells for the over 60 million people who rely on the Mekong Delta for their livelihoods.

China’s its own worst enemy in regional relations

China’s pattern of regional conduct has come increasingly into focus in recent times. Its behaviour is much less about maintaining the ‘status quo’, and much more about revising the established dynamics and contours in the region to its preferences. This revisionism is likely to become the primary source of tensions and potential conflict in Southeast Asia.

A view of the dam at the Jinghong Hydropower Station on the Lancang River, the Chinese section of the Mekong River, in Jinghong city, Yunnan province, 20 May 2013. (Photo: AAP).

Nowhere are China’s revisionist aims more evident than in the South China Sea and the upper reaches of the Mekong River, which straddles southern China, Myanmar, Thailand, Laos, Cambodia and Vietnam.

Drought-hit Thailand taps Mekong water

Facing a severe drought this year, Thailand is pumping water from the Mekong river to irrigate farms inland. It also wants to divert larger volumes, despite warnings from environmentalists about the downstream impact.

Pumping is now taking place in north-eastern Thailand, a parched region separated from Laos by the Mekong. In Nong Khai province, where a sluice gate between the Mekong and its tributary located within Thailand is now closed, temporary pumps are extracting water from the river at a rate of 15 cu m per second to water crops.

Forecast Stormy for Mekong, Commission Says

With the threat of climate change, a long-lasting drought, and contentious dam construction in Laos, the Mekong River Commission (MRC) has its work cut out for the rest of the year. Composed of delegates from Cambodia, Laos, Thailand, and Vietnam, the MRC is in charge of managing the river that provides livelihoods and power for much of Southeast Asia. Several delegates said yesterday that the organization will face challenges in the years ahead.

“Water remains as important as ever,” said General Surasak Karnjanarat, the head of the MRC’s delegation from Thailand. “It needs to be recognized as key to various development goals…but the situation has become more complex due to a number of challenges we are facing.”

Water management requires a more holistic view

As of Tuesday, the combined amount of usable water retained in seven major dams, including Bhumibol and Sirikit, that feed the Central plains stood at around 3,300 million cubic metres, or 18 per cent of their combined capacity of around 24,700 million cu.

The National Water Resources Committee (NWRC) came up with this figure at the end of November as it does every year, and after seeing these numbers, I must say it is of serious concern and I wonder how we will be able to survive yet another drought.

The New Mekong: Changes And Expectations

The construction of mainstream dams on the Mekong River pose significant environmental and social impacts for riparian communities in Cambodia and Vietnam. Vietnam National Mekong Committee’s Mekong Delta Study – set to be released in December 2015 – preliminarily predicted that hydropower dams will eliminate approximately 50 percent of fish catches in the region, which poses food security, public health, and economic crises in both Cambodia and Vietnam.

Letters From The Mekong: Time For A New Narrative On Mekong Hydropower

This issue brief – the second in Stimson’s “Letters from the Mekong” series – examines the current status of mitigation efforts at Laos’ Xayaburi and Don Sahong dam projects and the relevance of the existing narrative surrounding hydropower development on the river’s mainstream. Based on extensive research on the status and expected impacts of these projects, the authors of this brief have concluded that the current narrative of inevitability surrounding the future of the Mekong is increasingly at odds with what is in fact a very fluid situation. Instead of being the first two of up to nine or eleven mainstream “dominos” to fall, these commercial-opportunity projects are likely to face significantly increasing political and financial risks and uncertainties.