Joint Water Measurements By India & Bangladesh as Ganges Treaty Nears Expiry

2026: The Ganges Treaty Enters Its Final Stretch Amid Joint Water Measurements

On 2 January 2026, India and Bangladesh initiated joint water measurements on the Ganga and Padma rivers as the historic Ganges Water Sharing Treaty, 1996 enters its last year before expiry in December. This marks the first coordinated effort to gather real-time hydrological data since the treaty was signed nearly 30 years ago, governing water discharge at the Farakka Barrage, a critical structure located less than 18 km upstream of the Bangladesh border. The timing of this initiative indicates clear apprehension over the treaty’s renewal, with both nations seeking to resolve longstanding disputes—and avoid repeating the volatile standoffs of the 1970s and 1980s.

Breaking from Longstanding Patterns

Why are joint water measurements important now? Unlike earlier frameworks such as the interim agreements of 1977 and the memoranda of 1982 and 1985, this initiative signals a departure. Previous negotiations were limited to flow allocations based on pre-existing, static estimates; hydrological variability was assumed instead of being empirically studied. The new effort not only makes data transparent across borders but also accounts for shifts caused by climate change, glacier melt dynamics, and altered precipitation patterns. These factors have destabilized the reliability of river flows.

The joint initiative also acknowledges a deeper fracture: Bangladesh's perception of flow manipulation by India during lean months and India's rising internal water demands across Uttar Pradesh, Bihar, and West Bengal. These pressures were glossed over during the signing of the treaty in 1996, but the present scenario demands recalibration. Political rhetoric alone cannot bridge gaps; quantifiable data will now be the baseline for negotiations.

The Machinery Behind Joint Measurement

The operational framework for this effort involves hydrological experts from the Indian Central Water Commission (CWC) and Bangladesh's Water Development Board (BWDB). The Farakka Barrage Authority remains the fulcrum of measurement activities. Key legal instruments under scrutiny include:

• Article IX of the 1996 treaty, which obliges mutual consultation before any unilateral flow alteration.
• The Environment Protection Act, 1986 in India, which provides for resource sustainability within water-stressed regions like Bihar and West Bengal.
• Bangladesh's Water Act, 2013, which establishes legal mandates for equitable water access.

Despite the treaty’s diplomatic triumph in the 1990s, neither nation addressed critical implementation gaps in their domestic mechanisms. India's fragmented river basin management—spread across central agencies and state authorities—complicates compliance with discharge agreements. Similarly, Bangladesh's dependence on external pressure rather than basin-wide cooperation obstructs meaningful dialogue.

What the Data Does—and Doesn’t—Say

The shared hydrology masks systemic water stress on both sides. Data from the Central Water Commission highlights that the Ganga River Basin, covering 11 Indian states and supporting over 600 million people (45% of India's population), is the second-most water-stressed basin in India. Despite receiving 35.5% of India’s total rainfall, overextraction has tipped the ecological balance, with groundwater reserves rapidly depleting. Meanwhile, Bangladesh reports increasing salinity intrusion along its coastal zones, corroborating agricultural losses in Khulna and Satkhira districts.

Official flows recorded at the Farakka Barrage often fail to match Bangladesh's downstream allocations during lean months. For example, in 2020, Bangladesh received less than 65% of the agreed discharge during critical irrigation periods. These discrepancies are central to Dhaka’s call for “assured flows,” something left vague in treaty language—an institutional design flaw.

Other tensions abound: India’s climate experts warn that glacier-dependent tributaries such as Kosi and Gandak could face 30%-40% reduced flows by 2050, raising questions about reliance on static jalsamtis (water-sharing models) used since 1996.

Uncomfortable Questions the Measurements Don’t Answer

Despite the optimism surrounding joint measurements, it is unclear whether the data collection will translate into enforceable commitments. What happens if one party disputes the veracity of measurements? What dispute resolution mechanisms exist?

Another concern is funding. Both nations lack clarity on aligning budgets for sustained hydrological observation. India allocated only ₹1,200 crore under the Jal Shakti Abhiyan for river basin restoration in FY2025—an insufficient sum given it covers multiple basins including the Ganga. Bangladesh, meanwhile, struggles with external debt servicing, undermining its ability to invest domestically.

State-level executions also remain uneven. While West Bengal has consistently met discharge quotas since 2018, Uttar Pradesh’s internal diversion practices for agrarian demands often disrupt basin-wide accountability, a reality that joint measurements alone cannot fix. Political timing further complicates progress as Bangladesh heads into elections in 2026, creating pressure for populist overtures rather than substantive resource diplomacy.

An International Comparative Lens: South Korea’s River Governance

The challenges faced by India and Bangladesh echo those of South Korea’s Han River dispute with North Korea in the 2000s. Much like the Ganga-Padma system, the Han River faced reductions in flow due to upstream manipulation by North Korea. To resolve it, South Korea established basin-wide management boards equipped with real-time satellite monitoring and bilateral treaties involving clear penal provisions for flow violations. This contrasts starkly with India-Bangladesh mechanisms, which poorly integrate technology and lack enforcement teeth. Lessons from Seoul highlight the need for legal bindingness and technological sophistication in measuring—and managing—shared waters.

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