Guwahati: The Brahmaputra River Basin, one of South Asia’s most significant transboundary water systems, has long been a stage for complex geopolitical maneuvers between China and India. Spanning Tibet, India, Bhutan, and Bangladesh, this vital river system supports millions of livelihoods and holds immense potential for hydropower, irrigation, and biodiversity conservation. Yet, the river also reflects a tense strategic rivalry, particularly between the Asian giants, China and India.
A recent paper published by researchers from the Indian Institute of Technology Guwahati, Cotton University, and Wageningen University applies game theory to unravel the dynamics shaping China-India relations over the Brahmaputra. The findings offer a new lens to understand the ebb and flow of cooperation and conflict between the two countries.
Water Games: From Cooperation to Status Quo
The study highlights the pivotal 2002 signing of a Memorandum of Understanding (MoU) between China and India to share hydrological data during the flood season. This agreement emerged after devastating floods in 2000, allegedly caused by the bursting of artificial lakes in Tibet, leading to significant loss of life and infrastructure damage in India.
“The MoU was a strategic milestone,” the researchers emphasized. “It marked the first significant step toward technical cooperation between the two riparian countries.” China agreed to share water level, discharge, and rainfall data from its hydrological stations, helping India forecast floods.
However, cooperation has often been fragile. Renewed multiple times—in 2008, 2013, and 2018—the MoU introduced a contentious clause requiring India to pay for data. Critics in India viewed this as a strategic dependency that undermined its sovereignty.
Tensions peaked during the 2017 Doklam standoff when China suspended data sharing, citing technical upgrades. Despite the diplomatic setback, Bangladesh continued to receive hydrological data from China, signaling a nuanced approach to bilateral relations.
The ‘Game’ Model: Cooperation, Defection, and Payoffs
Using an extensive-form game model, the researchers depict China as the upstream player with the advantage of making the first move—either to cooperate by sharing data or to defect by withholding it. India, as the downstream player, faces vulnerabilities related to flood risks and water security.
The study finds that cooperation was initially the optimal strategy for both nations, yielding higher payoffs in terms of diplomatic stability, reduced accusations, and improved flood management. Yet, over time, geopolitical tensions and border disputes have hardened positions, fostering a status quo where neither side is willing to move beyond shallow cooperation.
“The evolving geopolitical landscape has entrenched a race for unilateral water interventions,” the study warns, noting China’s ambitious plans for a 60GW hydropower dam in Tibet and India’s counter-announcement of a 10GW dam in Assam.
From Prisoner’s Dilemma to Chicken Game
The researchers suggest that the strategic environment has shifted from a classic ‘prisoner’s dilemma,’ where both sides would benefit from cooperation but fear defection, to a ‘chicken game,’ where neither wants to yield first. This dynamic underscores the risk of escalating unilateral projects that could damage the river’s fragile ecosystem and disrupt regional stability.
“There is an urgent need for more scientific research to fully understand the consequences of dam construction by both India and China along the Brahmaputra River,” said Anamika Barua, Professor of Ecological Economics at IIT Guwahati and one of the authors of the study. “While developing hydropower infrastructure may have been inevitable given the river’s immense potential, the real concern lies in the lack of comprehensive studies on the social and environmental impacts of these projects.”
Barua posed critical questions: “Have we adequately assessed the implications of this infrastructure on downstream ecosystems and communities? Have we accounted for how climate change might affect the safety, efficiency, and long-term sustainability of these dams?”
She emphasized that the expiration of the 2018 MoU presents a critical opportunity to forge a forward-looking agreement. “A renewed MoU should go beyond basic hydrological data sharing. It must include mechanisms for real-time data exchange on upstream dam operations to ensure greater transparency and foster trust between the riparian nations. This is especially vital for mitigating risks from floods, sedimentation, and other cascading effects.”
Barua also urged India to take the initiative in driving discussions for cooperative frameworks. “A call to action is imperative. The cost of inaction could be far-reaching, with lasting impacts on regional stability, ecological balance, and the livelihoods of millions who depend on the Brahmaputra,” she warned.
A Tragic Status Quo
Despite the risks, both nations have maintained a reluctant status quo. While there is no active conflict over the Brahmaputra, genuine collaboration is absent. The study underscores that without basin-wide cooperation, the Brahmaputra’s potential for regional development will remain untapped.
“The race for dams in a seismic Himalayan zone could lead to catastrophic consequences,” cautions one respondent quoted in the study. The paper calls for renewed efforts to build trust and explore cooperative solutions.
As the 2018 MoU expired in June 2023, the question looms: Will China and India find a way to break the impasse and forge a path toward sustainable river management? Or will they continue to play a high-stakes game, risking both ecological disaster and regional instability?
One thing is clear—the waters of the Brahmaputra do more than quench thirst; they reflect the shifting tides of diplomacy and strategy in South Asia.
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