THE Supplemental Award by the Court of Arbitration under the Indus Waters Treaty (IWT) marks a significant victory for Pakistan, reaffirming its long-standing position that India’s use of the Western Rivers is subject to clear and substantive limits. Delivered on 15 May 2026 in proceedings concerning the Ratle and Kishenganga hydropower projects, the ruling underscores that India cannot manipulate or inflate its water-control capacities without strict technical justification. This verdict not only strengthens Pakistan’s legal position but also consolidates its right to safeguard its legitimate water share.
The Court’s award emphasizes that restrictions on India’s water management under the Treaty are not mere formalities. These limitations apply from the planning and design stages of hydropower projects and cannot be substituted with post hoc assurances of operational restraint. Any pondage for run-of-river plants must be grounded in actual hydrological conditions, project needs, expected operational parameters and power-system requirements. The ruling further mandates that installed capacity and projected load must be realistic, well-founded and defensible, leaving no room for artificial exaggeration or speculative assumptions. This directly supports Pakistan’s long-standing argument that India’s attempts to justify increased storage or pondage without an adequate technical basis contravene the Treaty. Moreover, the decision strengthens Pakistan’s right to full disclosure. India is required to provide detailed information to demonstrate compliance with Treaty provisions. In essence, the Court has affirmed that India must operate transparently, adhering to both the letter and spirit of the Treaty. Pakistan has consistently maintained that any unilateral attempt to suspend or hold the IWT in abeyance, or to restrict the flow of waters, constitutes a violation and provocation. The responsibility rests with the guarantor of the Treaty to ensure full compliance and India, by overstepping its technical and operational rights, is the party in breach. Pakistan has time and again made it clear that it will not compromise on its lawful water entitlements and the Court’s decision lends robust legal backing to this principled position. The Indus Waters Treaty is binding and cannot be unilaterally altered. Any attempt by India to restrict the flow of waters to Pakistan will only escalate regional tensions. The international community must take note of India’s conduct and use its influence to ensure that the Treaty is fully respected, safeguarding water security and stability in the region.
