What the 1960 treaty says, why India placed it in abeyance in April 2025, and what happens to the Indus basin next.
Signed in Karachi on 19 September 1960, the Treaty resolved the question partition had left open: how two states would share the six rivers of the Indus basin. It allocated the eastern rivers — the Ravi, Beas and Sutlej — to India, and the western rivers — the Indus, Jhelum and Chenab — largely to Pakistan, while preserving defined rights for India as the upper riparian, including run-of-river hydropower on the western rivers.
For six decades the Treaty was held up as the world’s most durable water agreement, surviving the wars of 1965, 1971 and 1999 intact. That record ended in April 2025, when India placed the Treaty in abeyance — the first suspension in its history, and the reason the agreement now sits at the centre of the India–Pakistan relationship.
The Treaty runs on machinery as much as on principle. A Permanent Indus Commission, with a commissioner from each side, handles routine exchange of data and the first hearing of objections. Article IX then provides a graduated ladder for disagreement: questions go to the Commission, differences to a World Bank-appointed Neutral Expert, and disputes to a Court of Arbitration. Article XII governs modification and termination — the Treaty remains in force until the two governments agree otherwise.
That ladder is itself now contested. Pakistan pursued a Court of Arbitration over India’s Kishanganga and Ratle projects while India maintained the Neutral Expert was the proper forum — parallel proceedings India has objected to, and the Permanent Court of Arbitration’s 2025 supplemental award on its own jurisdiction is part of what any honest account of the Treaty’s present state has to grapple with.
In April 2025, after the Pahalgam terror attack killed 26 civilians, India placed the Treaty in abeyance. The Treaty was signed, in its own words, “in a spirit of goodwill and friendship” — and India’s position is that sustained cross-border terrorism has hollowed out the good-faith premise on which the bargain rests.
The legal argument, examined in detail at the TIES Dialogue, frames abeyance as a lawful, proportionate countermeasure rather than a termination: material breach and fundamentally changed circumstances under Articles 60 and 62 of the Vienna Convention on the Law of Treaties, and the countermeasures doctrine of the ILC’s Articles on State Responsibility. Sixteen months into abeyance, no verifiable action against the terror infrastructure the suspension answered has been recorded — which is precisely why the question has moved from whether the Treaty operates to what could ever bring it back.
India’s use of the western rivers runs through treaty-compliant run-of-river projects — Salal, Baglihar, Dulhasti, Uri and Kishanganga — while Pakistan, by its own account, depends on the Indus system for about 80% of its irrigation. Six decades as the Treaty’s principal beneficiary, however, were not matched by investment in storage or irrigation efficiency, and much of Pakistan’s present water distress traces to that under-investment rather than to anything done upstream.
The basin also carries a documented history of cross-border environmental harm in the other direction: the Left Bank Outfall Drain’s flooding of the Rann of Kutch remains the standing example. For India, the western rivers are a matter of agriculture, hydropower and long-term water security — which is why full, lawful use of its upper-riparian rights, with the responsibilities that come with them, is the forward-looking question the abeyance has opened.
Independent of security, the Treaty has a design flaw no one disputes: it was engineered in 1960 with no climate contingency at all. The basin it governs now faces glacial retreat and altered seasonal flows, and a fixed allocation drawn for mid-century hydrology fits the river system less with every year. On scientific grounds alone, renegotiation on updated hydrological terms has a case — one the Dialogue treats as standing apart from the terrorism question entirely.
Three paths are visible. The Treaty stays in abeyance while its good-faith premise stays broken; it is renegotiated on modern hydrological terms; or a verifiable end to cross-border terrorism re-opens the road to normal cooperation. India has signalled the terms of the third path, and the second is increasingly argued from the science regardless of politics. What no serious reading supports is a return to 1960 as if nothing happened.
On 19 September 2026 — the Treaty’s sixty-sixth anniversary — Tiesverse Foundation convenes the Dialogue on the Indus Waters Treaty at Bharat Mandapam, New Delhi: a one-day plenary bringing jurists, water-resource engineers, security scholars and diplomats to a single table. Sessions cover the treaty text and the legal basis for abeyance, the Indus civilisational heritage, the documented record on terrorism and compliance, and the economics of the western rivers.
The day closes with the adoption of the New Delhi Declaration — “Blood and Water Cannot Flow Together” — and the release of a legal-policy white paper: an article-by-article, source-anchored record built to travel to legal, diplomatic and media audiences. Registration, partnership and the full agenda are at iwtdialogue.tiesverse.com.
A 1960 water-sharing agreement between India and Pakistan, brokered by the World Bank. It allocates the eastern rivers — Ravi, Beas and Sutlej — to India and the western rivers — Indus, Jhelum and Chenab — largely to Pakistan, with defined rights for India as the upper riparian.
In April 2025, following the Pahalgam terror attack, India placed the Treaty in abeyance. India’s position, examined at the TIES Dialogue, is that sustained cross-border terrorism constitutes a breach of the good-faith premise the Treaty was signed on, making abeyance a lawful, proportionate countermeasure rather than a termination.
A one-day dialogue convened by Tiesverse Foundation at Bharat Mandapam, New Delhi on 19 September 2026 — the Treaty’s 66th anniversary — bringing together jurists, water-resource engineers, security scholars and diplomats, and concluding with the New Delhi Declaration and a legal-policy white paper.
All six rivers of the Indus system: the Ravi, Beas and Sutlej in the east, allocated to India, and the Indus, Jhelum and Chenab in the west, allocated largely to Pakistan, with India retaining run-of-river hydropower and other defined uses.
Registration, partnership and media enquiries are open at iwtdialogue.tiesverse.com, or through Tiesverse Foundation at www.tiesverse.com/contact.
Tiesverse — India's youth-led research, media and technology organisation.