Decoding Indus Waters Treaty (Part- 2): The Making Of A Treaty, A Bargain India Made For Peace

Last Updated:June 25, 2026, 20:00 IST

Nehru would tell Parliament after signing that India had purchased a settlement. The phrase was carefully chosen

Political borders are easily drawn on paper, but engineering a permanent split through a shared, continuous river network is a far more volatile challenge. Decades after the 1947 partition bisected the subcontinent’s agricultural lifelines, the Indus Waters Treaty remains a landmark, controversial template of transboundary resource management. This exclusive six-part investigative series moves past historic rhetoric to dissect the secret diplomatic manoeuvres, structural vulnerabilities, and legal battles that shaped the 1960 accord. We trace how an intricate canal network became an ongoing geopolitical chessboard, evaluating whether a legacy pact can withstand the compounding strains of modern climate change and intense regional strategy.

The Indus Waters Treaty of 1960 is often celebrated, with some justice, as a triumph of multilateral diplomacy. It is the only major water-sharing arrangement in modern history to have survived three wars between its signatories. It is studied in universities as a model of cooperative resource management. It is held up by international organisations as evidence that hydrological cooperation is possible even between hostile neighbours. Each of these characterisations is accurate as far as it goes. None of them captures the essential nature of the bargain India struck in Karachi on 19 September 1960.

The treaty was, at its core, a strategic concession. India gave up rights to roughly eighty per cent of the basin’s flow, accepted limitations on its hydropower development on the western rivers, and committed to funding Pakistani replacement infrastructure. In return, it received an Indus dispute taken off its diplomatic table, an established mechanism for managing future disagreements, and what Nehru genuinely believed would be a more stable western neighbour. Whether the bargain has aged well is a question that depends on how one assesses the seventy years of evidence since.

The Architecture of the Treaty

The treaty’s allocation principle was elegant. Rather than dividing the waters of each river between the two countries, an arrangement that would have required continuous monitoring and metering, the treaty assigned entire rivers. The three eastern rivers, Ravi, Beas, and Sutlej, with a combined mean annual flow of approximately 33 million acre-feet, went to India for unrestricted use. The three western rivers, Indus, Jhelum, and Chenab, with a combined mean annual flow of approximately 135 million acre-feet, went to Pakistan. India retained limited rights to use the western rivers for non-consumptive purposes, specified agricultural use, and run-of-the-river hydropower projects within tightly defined technical parameters.

Dispute resolution was structured in three tiers. The Permanent Indus Commission, comprising one commissioner from each country, would serve as the first line of engagement, handling routine technical matters and exchanging hydrological data. Differences that could not be resolved at this level could be referred to a neutral expert, a technical authority appointed under the treaty’s procedures. Disputes that involved legal interpretation rather than purely technical determination could be escalated to a court of arbitration. The treaty’s drafters believed this layered architecture would allow most disagreements to be resolved without political crisis.

India also agreed to make ten annual payments totalling sixty-two million pounds sterling to fund the replacement infrastructure that Pakistan would need to build, with additional financing arranged through the Indus Basin Development Fund. This was an extraordinary concession. India was effectively financing the very projects that would allow Pakistan to use the water India had agreed to give up. The logic, as understood at the time, was that Pakistan could not be expected to fund the replacement works alone, that the World Bank’s involvement required Indian financial commitment to make the package work politically, and that the cost was a one-time investment in long-term stability.

India was effectively financing the very projects that would allow Pakistan to use the water India had agreed to give up. The logic, as understood in 1960, was that the cost was a one-time investment in long-term stability.

Why Nehru Signed

Nehru’s strategic calculation in 1960 deserves to be understood on its own terms, not measured against outcomes he could not have foreseen. He inherited a relationship with Pakistan defined by the trauma of partition and the unresolved Kashmir question. He had watched Pakistan join the Western military alliance system through the Baghdad Pact and SEATO in the mid-1950s, deepening Indian strategic isolation. He had seen Ayub Khan’s military regime consolidate power in 1958. The prospect of a sustained Indo-Pakistani conflict was not theoretical. It was the working assumption of South Asian diplomacy.

In that context, Nehru concluded that the costs of the treaty were preferable to the costs of indefinite confrontation over water. A stable Pakistan with secure access to irrigation water, he reasoned, would be a less aggressive Pakistan. A bilateral dispute managed through institutional mechanisms would be less prone to escalation than one negotiated under conditions of open hostility. The treaty’s eighty-twenty split, while unfavourable on its face, was justifiable when viewed against the alternative of continuous conflict over flows.

Ayub Khan’s compulsions were equally serious. Pakistan’s economy depended on the canal systems of Punjab and Sindh to a degree that made resolution of the water question existential. Without secure water access, Pakistan’s wheat and cotton economies would collapse. Without a treaty, Pakistan would face the permanent risk of Indian upstream actions. The eighty-twenty allocation, from his perspective, was the floor below which Pakistan could not go, not a ceiling Pakistan was generously offered.

The Optimism and Its Limits

The Karachi signing ceremony reflected a particular moment of optimism that is worth recovering. The Cold War had not yet hardened into the bipolar rigidities of the 1970s. The international system seemed capable of producing mediated solutions to long-standing problems. India and Pakistan, both democracies of a sort, both members of the United Nations and the Commonwealth, and both committed at least rhetorically to peaceful coexistence, appeared to have demonstrated that hostile neighbours could find common ground when external mediation was available and political leadership was willing.

What the optimism missed was that the treaty addressed only one dimension of a much larger conflict. The Kashmir question remained unresolved. The military relationship between the two countries had not been demilitarised. The ideological foundations of Pakistan’s national identity, which framed India as the constitutive other, had not been moderated. The treaty had separated the water question from the broader Indo-Pakistani relationship, and for several decades that separation seemed to be its great achievement. Over time, it would become apparent that the separation was conditional. As the broader relationship deteriorated, the water arrangement would come under pressure that its 1960 drafters had not anticipated.

Nehru would tell Parliament after signing that India had purchased a settlement. The phrase was carefully chosen. He understood that India had given up significant entitlements in exchange for stability. The question that the next sixty-five years would answer was whether the stability India purchased was worth the price India paid. The first three decades suggested it was. The fourth, fifth, and sixth would tell a different story.

The writer is an author and columnist. His X handle is @ArunAnandLive. Views expressed are personal and solely those of the author and do not necessarily reflect News18’s views.

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