India on Saturday (May 16, 2026) rejected an award reportedly issued by the Court of Arbitration (CoA) at The Hague on May 15, 2026, concerning maximum pondage at Indian hydroelectric projects on the Indus river system, reiterating that it does not recognise the tribunal as legitimately constituted.
The CoA is a five-member arbitral panel chaired by Prof. Sean D. Murphy, constituted in January 2023. It was set up at Pakistan’s request after Islamabad challenged the design of India’s Kishenganga and Ratle hydroelectric projects.
India has refused to participate, arguing that the technical questions involved fall within the remit of a Neutral Expert appointed in parallel by the World Bank
Detailed Insights:
The dispute centers on the interpretation of the Indus Waters Treaty concerning the design and operation of hydroelectric projects.
In August 2025, the CoA ruled in Pakistan's favor, restricting India's calculation of permissible pondage for run-of-river plants.
India's decision to hold the Indus Waters Treaty in abeyance remains in force, signaling a potential shift in its approach to the treaty.
Pakistan requested interim measures, and the status of the treaty was discussed during a three-day hearing concluding on April 28, 2026.
Key Concepts Involved:
Indus Waters Treaty: A water-sharing agreement signed in 1960 between India and Pakistan, brokered by the World Bank, to allocate the waters of the Indus River and its tributaries.
Court of Arbitration (CoA): A tribunal constituted to resolve disputes related to the Indus Waters Treaty, formed at Pakistan's request in January 2023.
Pondage: The volume of water stored in a reservoir behind a dam, which is a key factor in regulating the flow of water for hydroelectric power generation.