UPSC Notes

Indus Water Treaty (IWT)

PYQs

8

Articles

2

Momentum

23

Phase IFoundation

Background

Overview

The IWT is a critical bilateral agreement influencing India-Pakistan relations, water security, and regional stability. Its potential revision highlights challenges in international water law, climate change adaptation, and the role of international mediation in transboundary resource management.

The Indus Water Treaty (IWT), signed in 1960 between India and Pakistan, is a water-sharing agreement brokered by the World Bank. It governs the sharing of the six rivers of the Indus basin, allocating the waters of the Eastern Rivers (Ravi, Beas, Sutlej) to India and the Western Rivers (Indus, Jhelum, Chenab) to Pakistan, with certain provisions for India's limited use of Western River waters for non-consumptive purposes like hydropower.

Phase IIStatic core

Facts & tables

Key facts

Signing & Broker

Signed in 1960 between India and Pakistan, brokered by the World Bank.

River Allocation

Allocates Eastern Rivers (Ravi, Beas, Sutlej) to India and Western Rivers (Indus, Jhelum, Chenab) to Pakistan.

India's Rights

India has limited rights for non-consumptive uses (e.g., hydropower) on Western Rivers.

Current Debate

Current debate centers on its revision due to changing hydrological realities from climate change and geopolitical tensions.

Signing Year

1960

Mediating Body

World Bank

Eastern Rivers

Beas, Ravi, Sutlej (allocated to India)

Western Rivers

Indus, Jhelum, Chenab (allocated to Pakistan, with limited non-consumptive uses for India)

Reference table

Static syllabus anchors

TypeReference
Conceptual areaInternational Relations
Conceptual areaEnvironmental Law & Policy
Conceptual areaIndian Economy

Reference table

Institutions & roles

BodyRole
World BankMediator
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Factual recall

Prelims angle: Conceptual understanding

Quick revision

  • 1960 treaty between India and Pakistan, brokered by World Bank.
  • Divides Indus basin rivers: Eastern (India), Western (Pakistan).
  • India has limited non-consumptive rights on Western Rivers.
  • Needs revision due to climate change and geopolitical shifts.
  • Shift from 'partition' to 'shared management' approach advocated.

Elimination traps

Body vs treaty — The IWT is a treaty, not an international organization or body.

Treaty = agreement between states; body = institution.

High-confidence PYQs

Topic timeline

International RelationsEnvironmental Law & PolicyIndian Economy

Revising the Indus Water Treaty

26 Aug 2026 · The IWT, a 1960 India-Pakistan water-sharing treaty, allocates eastern rivers to India and western rivers to Pakistan. It faces calls for revision due to climate change impacts on water availability and geopolitical tensions, moving from a partition-based approach to one of shared management.

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Centre considering new hydropower projects, including in J&K’s Sawalkot: Union Power Secretary Pankaj Agarwal

04 Oct 2026 · The IWT, signed in 1960, allocates eastern rivers to India and western rivers to Pakistan, with provisions for India's limited use of western rivers. Recent developments, like India's suspension of the treaty post-Pahalgam attack and Pakistan's objections to Indian projects, highlight its ongoing geopolitical significance.

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Related topics

Practice writing on this topic

UPSC has asked 8 linked questions on Indus Water Treaty (IWT) in Mains. Write an answer to one — and get it evaluated.

UPSC Prelims PYQs on Indus Water Treaty (IWT)

Practice official previous year questions asked by UPSC related to this concept.

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