The Ganges Water Sharing Treaty: A Cornerstone of Indo‑Bangladesh Co-operation

The Ganges Water Sharing Treaty: A Cornerstone of Indo‑Bangladesh Cooperation

Signed on December 12, 1996, the Ganges Water Sharing Treaty has underpinned water diplomacy between India and Bangladesh for nearly three decades. As its 30‑year term approaches renewal in 2026, new geopolitical tensions—particularly India’s concerns over Bangladesh’s support for Pakistan—threaten this vital agreement. What’s at stake, and what could happen if New Delhi chooses to withdraw?




1. Treaty Overview

  1. Duration & Purpose

    • Effective Period: January 1, 1996 – December 31, 2026

    • Objective: Equitable sharing of dry‑season flows (January 1 – May 31) at the Farakka Barrage, just upstream of the India‑Bangladesh border.

  2. Sharing Mechanism

    • Flow Bands: The treaty prescribes specific sharing ratios for ten‑day periods whenever flows dip below 70,000 cusecs. Above that threshold, India may retain surplus water.

    • Data Exchange: Daily flow data are exchanged and reviewed to ensure transparency.

  3. Governance

    • Permanent Joint Committee (PJC): Meets twice a year to assess compliance, address disputes, and recommend technical improvements.


2. Strategic Importance

  • Agricultural Lifeline:
    Bangladesh’s “boro” rice cultivation (winter–spring crop) depends heavily on Ganges water. Approximately 3 million hectares in the north and southwest rely on these dry‑season flows for irrigation.

  • Ecosystem Health:
    Sustained freshwater discharge prevents saline intrusion into the Bengal delta, protecting the Sundarbans mangrove forests and associated fisheries.

  • Human Well‑Being:
    Clean river water supports millions for drinking, sanitation, and livelihoods — from farmers to inland fishers and boatmen.


3. Brewing Tensions: The 2026 Renewal Question

India’s Grievance

In recent years, New Delhi has grown uneasy with Dhaka’s perceived closeness to Islamabad—ranging from defense procurement to diplomatic support on Kashmir. Some Indian policymakers argue that Bangladesh’s backing of Pakistan in international forums undercuts regional solidarity.

“Given these strategic concerns,” suggests one commentator, “India may reconsider the water treaty’s renewal when it expires at end‑2026.”

If India were to refuse renewal or renegotiate on harsher terms, it would effectively halt agreed water releases after December 31, 2026.


4. Potential Consequences of Treaty Abrogation

Domain Impact on Bangladesh Wider Fallout
Agriculture Major boro rice failures; food security risks; soaring staple prices Humanitarian aid demands; cross‑border relief strains
Environment Heightened saline intrusion; mangrove die‑off; fishery collapse Biodiversity loss; climate resilience weakened
Economy & Livelihoods Loss of 2–3 million fishing and farming jobs; rural poverty surge Increased migration to urban centers; bilateral trade disruptions
Water & Health Polluted, concentrated river water; public health crises International scrutiny; potential sanctions
Diplomacy & Security Diplomatic row; legal challenges at ICJ or UN; hardened public opinion Shift in regional alliances; China’s deeper inroads into Bangladesh

5. Legal and Diplomatic Repercussions

  1. International Law Violation

    • Unilateral withdrawal breaches the 1996 Treaty and customary international law (Vienna Convention).

    • Bangladesh could pursue dispute resolution under the UN Watercourses Convention or approach the International Court of Justice.

  2. Reputational Damage

    • India’s “Neighbourhood First” policy would suffer a setback, undermining trust with other riparian neighbors (e.g., Nepal, Bhutan).

  3. Third‑Party Mediation

    • The two nations might be compelled to invite a neutral mediator—perhaps from the UN or World Bank—to avert a full‑scale water crisis.


6. Paths Forward: Cooperation or Confrontation?

  • Diplomatic Dialogue:
    A high‑level bilateral summit could address both water sharing and broader strategic concerns, decoupling hydrology from geopolitics.

  • Joint Water Management Initiatives:
    Modernizing the Farakka Barrage, investing in upstream storage, and integrating climate‑resilient river basin management would benefit both parties.

  • Multilateral Water Governance:
    Engaging South Asian neighbors in a basin‑wide commission could depoliticize single‑river disputes and emphasize shared benefits.


Conclusion

The Ganges Water Sharing Treaty stands as a testament to pragmatic cooperation between India and Bangladesh. Yet, as its 2026 renewal looms against a backdrop of shifting alliances—particularly Dhaka’s ties with Islamabad—the risk of abrogation carries dire humanitarian, ecological, and diplomatic consequences. Moving forward, both nations face a pivotal choice: safeguard a lifeline that nourishes millions, or let geopolitical mistrust dry up a river of goodwill that has flowed for generations.




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