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Relevance: GS-II (International Relations); GS-III (Environment, Water Resources) Source: Bilateral Treaty Updates, 2026

1 · What is the news in simple words?

In 1996, India and Bangladesh signed a historic 30-year treaty to share the waters of the river Ganga. This treaty is set to expire soon in December 2026.
As both countries prepare to renew the agreement, experts are suggesting that we cannot simply copy-paste the old rules. The world has changed drastically over the last thirty years. Today, both nations face severe climate change, melting glaciers, and tricky internal politics. Therefore, the new treaty needs to be much smarter—focusing not just on dividing the water, but on managing the entire river ecosystem together to prevent floods and protect agriculture for millions of farmers.

2 · Understanding the Treaty and Its Challenges

Step 1: The Farakka Barrage
In 1975, India built the Farakka Barrage to divert Ganga’s water into the Hooghly river to save the Kolkata Port. This led to water-sharing disputes with Bangladesh.
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Step 2: The 1996 Agreement
To resolve this, the 1996 Treaty created a formula to share the water during the dry season (January-May). If water drops too low, it is shared equally (50:50).
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Step 3: New Complexities
Today, the issue is more complex. Indian states like West Bengal and Bihar have their own domestic water concerns, while climate change alters the river’s flow.
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Step 4: The Need to Upgrade
The new treaty must go beyond just “sharing” water. It must focus on joint ecological management, flood forecasting, and protecting the fragile Sundarbans delta.

3 · Key Diplomatic & Geographical Concepts

The Farakka Barrage
The Starting Point
Built in West Bengal in 1975 to ensure enough water flows into the Hooghly river. It is the central structure around which the Ganga water-sharing calculations are based.
Domestic Politics
The Internal Challenge
International treaties require domestic support. West Bengal worries about its own summer water needs, while Bihar often blames the Farakka Barrage for causing massive local floods.
Upstream vs. Downstream
Hydraulic Leverage
India is the “upstream” state (the river flows through India first), giving it natural control. Bangladesh is the “downstream” state, making it highly dependent on India releasing enough water.
Track 2 Diplomacy
Building Trust
Instead of just politicians talking, Track 2 diplomacy involves non-governmental experts, academics, and citizens from both sides discussing solutions to build mutual trust before official talks.

UPSC Prelims Quick Facts: Treaty Provisions
Dry Season Focus The 1996 Treaty specifically manages water flows during the leanest (dry) months, dividing water in 10-day blocks between January 1 to May 31.
Emergency Clause Article II contains a fail-safe: if the water at Farakka drops dangerously low (below 50,000 cusecs), both governments must hold immediate emergency consultations.
Shared Rivers India and Bangladesh share a massive total of 54 transboundary rivers, making basin-level cooperation absolutely vital for the region.
Neighbourhood First A successful renegotiation of this treaty is a critical test of India’s “Neighbourhood First” policy to ensure external actors (like China) do not exploit regional water disputes.

MCQ Practice Question
Q. With reference to the 1996 Ganga Water Treaty between India and Bangladesh, consider the following statements:

  1. The treaty primarily regulates the sharing of water during the monsoon season to prevent floods in Bangladesh.
  2. The water-sharing calculations in the treaty are heavily dependent on the water availability at the Farakka Barrage.
  3. It includes an emergency consultation clause if the water flow falls below a specific critical level.

Which of the statements given above is/are correct?
(a) 1 and 2 only    (b) 2 and 3 only    (c) 1 and 3 only    (d) 1, 2 and 3

Answer: (b) 2 and 3 only

  • Statement 1 — Incorrect (the trap): The treaty does not regulate monsoon waters! It specifically manages water sharing during the lean/dry season (January 1 to May 31).
  • Statement 2 — Correct: The entire allocation formula is based on the volume of water available at the Farakka Barrage in West Bengal.
  • Statement 3 — Correct: Article II mandates immediate emergency consultations if the flow drops below 50,000 cusecs to ensure fairness during severe droughts.
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