Indus Waters Treaty

The Indus Waters Treaty (IWT) was signed on 19 September 1960 in Karachi by Indian Prime Minister Jawaharlal Nehru, Pakistani President Mohammad Ayub Khan, and W. A. B. Iliff of the World Bank (then the International Bank for Reconstruction and Development), which acted as broker and signatory. The treaty resolved the dispute that arose after the 1947 Partition severed the Indus basin, leaving the headworks of canals irrigating West Punjab inside Indian territory; the April 1948 stoppage of water by India at Ferozepur headworks crystallised the crisis. Negotiations began in 1952 under World Bank President Eugene Black, drawing on the earlier mediation proposals of David Lilienthal. The Indus basin comprises six rivers: the eastern rivers — Ravi, Beas and Sutlej — and the western rivers — Indus, Jhelum and Chenab.

Under the treaty's allocation, the unrestricted use of the three eastern rivers (Ravi, Beas, Sutlej) was given to India, while the waters of the three western rivers (Indus, Jhelum, Chenab) were reserved for Pakistan, with India permitted limited "non-consumptive" use — for run-of-the-river hydroelectric generation, navigation, and restricted agricultural use governed by Annexures C and D. The treaty financed an Indus Basin Development Fund to construct replacement works in Pakistan, including the Tarbela Dam on the Indus and the Mangla Dam on the Jhelum, plus link canals. A three-tier dispute mechanism is built in (Article IX): a Permanent Indus Commission of commissioners from both states for routine "questions"; a Neutral Expert appointed by the World Bank for technical "differences"; and a Court of Arbitration for legal "disputes."

The treaty has survived three wars (1965, 1971, 1999) and remains a frequently cited example of successful conflict resolution over shared waters. Contentious projects have tested its mechanisms: the Baglihar Dam on the Chenab was referred to a Neutral Expert (Raymond Lafitte), whose 2007 decision largely upheld India's design with modifications, while the Kishanganga project on a Jhelum tributary went to a Court of Arbitration, which in its 2013 final award permitted diversion subject to minimum downstream flow. Disputes over Kishanganga and Ratle led to parallel proceedings; in January 2023 India issued a formal notice to Pakistan seeking modification of the treaty under Article XII, citing Pakistan's "intransigence," and in 2024–2025 India pressed for renegotiation. Following the April 2025 Pahalgam terror attack, India announced it would hold the treaty "in abeyance," an unprecedented step straining the regime — candidates should track the current status into 2026.

For the exam, the IWT is high-yield across multiple papers. In UPSC it appears in Geography (river systems, transboundary water) and Post-Independence History/International Relations (India-Pakistan relations); in CSS Pakistan Affairs it is a core topic on water security and the Indus basin economy. Typical question angles include naming the eastern versus western rivers and their allocation, identifying the World Bank's brokering role and the 1960 signatories, explaining the three-tier dispute-resolution hierarchy under Article IX, and analysing recent flashpoints (Baglihar, Kishanganga, the 2025 abeyance) as case studies in treaty resilience. Article XII, governing amendment and termination, is the key clause for any question on whether the treaty can be unilaterally exited.