China to proceed with Brahmaputra mega dam despite new concerns
2-minute summary
China is advancing its "project of the century"—the Yarlung Zangbo Lower Reaches Hydropower Project—on the Brahmaputra River near the Indian border, as formalized in its 15th Five-Year Plan for renewable energy. Located in a highly seismic zone in Tibet, this mega-dam is projected to have a massive 60 GW capacity, which is three times the capacity of the Three Gorges Dam. Despite recent glacial collapses and flash floods along the Nepal-China border, Beijing is pushing forward with a new state-run entity, the China Yajiang Group, to execute the project. For India, this run-of-the-river project with a reservoir and a 40-km diversion tunnel raises severe downstream water security, ecological, and disaster risks. The lack of transparent data sharing remains a major hurdle, even as the bilateral Expert-Level Mechanism (ELM) on Trans-border Rivers is scheduled to meet.
Why it's in the news
China has officially included the Yarlung Zangbo Lower Reaches Hydropower Project (Brahmaputra mega-dam) in its 15th Five-Year Plan for renewable energy, signaling its intent to proceed despite heightened downstream ecological and seismic concerns following recent trans-boundary flash floods.
Background and context
The Brahmaputra (known as Yarlung Zangbo in Tibet) originates in the Angsi Glacier near Mount Kailash and flows through Tibet before entering India (Arunachal Pradesh as Siang/Dihang, then Assam as Brahmaputra) and Bangladesh. As an upper-riparian state, China has constructed several run-of-the-river dams on the middle reaches, such as the Zangmu dam (operational since 2015). However, the proposed mega-dam at the "Great Bend" (where the river takes a sharp turn into India) is unprecedented in scale. India and China do not have a formal water-sharing treaty; instead, they rely on a Memorandum of Understanding (MoU) renewed periodically and the Expert-Level Mechanism (ELM) established in 2006 to share hydrological data during monsoon seasons. The lack of transparency and potential weaponization of water during border standoffs remain core strategic anxieties for India.
Constitutional provisions
- Seventh Schedule (List I - Union List), Entry 10 — Deals with Foreign Affairs, which encompasses all relations with foreign countries, including trans-boundary water negotiations.
- Seventh Schedule (List I - Union List), Entry 14 — Deals with entering into treaties and agreements with foreign countries and implementing treaties, agreements, and conventions.
Committees and reports
- Parliamentary Standing Committee on Water Resources - 17th Report on 'Flood Management in the Country including International Water Treaties' — Expressed concern over China's run-of-the-river projects on the Brahmaputra and recommended that India constantly monitor these activities and pursue a formal water-sharing treaty.
Government schemes
- Upper Siang Multipurpose Project (Proposed) — A strategic 11,000 MW hydropower project planned by India in Arunachal Pradesh to act as a reservoir buffer to counter the water diversion and flow-control capabilities of China's upstream dams.
International organisations
- Expert-Level Mechanism (ELM) on Trans-border Rivers — A bilateral institutional mechanism established in 2006 between India and China to discuss interaction on hydrological data sharing, emergency management, and other trans-boundary river issues.
Previous UPSC questions on this theme
- Mains GS-2 2017 — "China is using its economic relations and positive trade surplus as tools to develop potential military power status in Asia." In the light of this statement, discuss its impact on India as her neighbour.
Mains practice: Analyze the geopolitical and ecological implications of China's proposed mega-dam on the Yarlung Zangbo (Brahmaputra) for downstream riparian states like India and Bangladesh. Suggest a multi-pronged strategy for India to safeguard its interests.
China's plan to construct a 60 GW mega-dam on the lower reaches of the Yarlung Zangbo (Brahmaputra) near the Great Bend has raised serious strategic and ecological concerns for downstream India and Bangladesh.
**Geopolitical & Ecological Implications:**
• **Hydro-Hegemony and Flow Control:** Although described as a run-of-the-river project, the inclusion of a reservoir and a 40-km diversion tunnel allows China to regulate, delay, or divert water flows. This could cause artificial water scarcity during dry seasons or sudden releases (water weaponization) during conflicts.
• **Seismic and Disaster Risks:** The Great Bend is located in the seismically active Eastern Syntaxis of the Himalayas (Zone V). Constructing a mega-structure here increases the risk of Reservoir-Induced Seismicity (RIS) and vulnerability to Glacial Lake Outburst Floods (GLOFs), which could trigger catastrophic downstream flash floods.
• **Siltation and Ecological Degradation:** The Brahmaputra carries nutrient-rich silt vital for agriculture in Assam and Bangladesh. Damming will trap this silt, reducing soil fertility downstream and altering river morphology, which threatens the rich biodiversity of the Eastern Himalayas.
**Multi-Pronged Strategy for India:**
• **Establish Downstream Storage:** Accelerate the construction of the 11,000 MW Upper Siang Multipurpose Project in Arunachal Pradesh to absorb sudden water releases and secure India's "prior user rights" under international law.
• **Multilateralize the Issue:** Collaborate with Bangladesh to present a unified downstream front, raising the issue at international environmental and climate forums.
• **Strengthen Data-Sharing:** Upgrade the bilateral Expert-Level Mechanism (ELM) into a formal, legally binding treaty with real-time, year-round hydrological data sharing.
In conclusion, India must balance its diplomatic engagement with robust domestic infrastructure development to counter China's hydro-hegemony, ensuring ecological sustainability and national security in the Northeast.
Prelims practice questions
Q1. With reference to the Brahmaputra River (Yarlung Zangbo), consider the following statements: 1. It originates in the Angsi Glacier near Mount Kailash. 2. The Zangmu Dam is the first major run-of-the-river project completed by China on the middle reaches of this river. 3. The river takes a sharp U-turn (the 'Great Bend') near Namcha Barwa before entering India as the Dihang. Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Answer: D. All three statements are correct. The Brahmaputra originates from the Angsi Glacier (though older sources cite Chemayungdung). The Zangmu Dam is indeed a run-of-the-river project on the middle reaches in Tibet. The river makes a sharp turn around the Namcha Barwa peak (the Great Bend) to enter Arunachal Pradesh as the Siang/Dihang.
Q2. Which of the following bilateral mechanisms currently exists between India and China to address issues related to trans-boundary rivers?
- The Brahmaputra Water Sharing Treaty
- The McMahon Line Water Accord
- The Expert-Level Mechanism (ELM)
- The Joint River Commission (JRC)
Answer: C. India and China do not have a water-sharing treaty. Instead, they established the Expert-Level Mechanism (ELM) in 2006 to discuss trans-boundary river issues, emergency management, and hydrological data sharing. The Joint River Commission (JRC) exists between India and Bangladesh.
Q3. Consider the following pairs of tributaries of the Brahmaputra River and their bank orientation: 1. Lohit - Left bank tributary 2. Subansiri - Right bank tributary 3. Manas - Left bank tributary Which of the pairs given above is/are correctly matched?
- 1 only
- 1 and 2 only
- 2 and 3 only
- 1, 2 and 3
Answer: B. Lohit and Dibang are major left-bank tributaries. Subansiri, Kameng, and Manas are major right-bank tributaries. Therefore, pair 3 is incorrectly matched as Manas is a right-bank tributary.
Revision flashcards
- Where does the Brahmaputra River take its famous 'Great Bend' before entering India? Around the Namcha Barwa peak in the Tibet Autonomous Region, near the border with Arunachal Pradesh.
- What is the name of the bilateral platform established in 2006 between India and China for trans-border rivers? The Expert-Level Mechanism (ELM) on Trans-border Rivers.
- What is the principle of 'Prior Appropriation' (Prior User Rights) in international water law? The principle that the first state to put trans-boundary water to beneficial use acquires a prior right to that water, which downstream states like India can use to counter upstream diversions.
- Which operational Chinese dam on the middle reaches of the Yarlung Zangbo was commissioned in 2015? The Zangmu Hydropower Project.
- What strategic counter-measure is India planning in Arunachal Pradesh to mitigate downstream flow variations from China's dams? The 11,000 MW Upper Siang Multipurpose Project, designed to act as a reservoir to absorb sudden water releases or deficits.