IRGS2+ GS3

Permanent Court of Arbitration Rules Indus Waters Treaty Remains Fully in Force

Indian Express, The Hindu·2026-09-01

"Permanent Court of Arbitration Rules Indus Waters Treaty Remains Fully in Force"

Prelims Facts

  • •The Indus Waters Treaty was signed on 19 September 1960, brokered by the World Bank.
  • •Under the IWT, the eastern rivers (Ravi, Beas, Sutlej) were allocated to India; the western rivers (Indus, Jhelum, Chenab) predominantly to Pakistan, giving Pakistan roughly 80% of basin waters.
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Key Terms

Indus Waters Treaty (IWT)

1960 World Bank-brokered treaty dividing Indus basin rivers between India and Pakistan.

Permanent Court of Arbitration (PCA)

Intergovernmental dispute resolution body established by the 1899 Hague Convention, headquartered at The Hague.

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Study Note

BackgroundCore Concept

Background

The Indus Waters Treaty (IWT), signed on 19 September 1960 and brokered by the World Bank, is one of the most enduring bilateral water agreements in the world. It divides the six rivers of the Indus basin between India and Pakistan: the eastern rivers — Ravi, Beas, and Sutlej — were allocated almost exclusively to India, while the western rivers — Indus, Jhelum, and Chenab — were allocated predominantly to Pakistan. Pakistan received rights over roughly 80% of the basin's total waters (~135 million acre-feet annually), while India retained only about 20% (~33 MAF) despite being the upper riparian state. India retains limited rights over the western rivers for run-of-river hydropower, domestic use, and non-consumptive purposes.

The treaty's dispute resolution framework operates in three sequential tiers:

  • •the Permanent Indus Commission (PIC) for routine technical matters and data exchange
  • •a Neutral Expert appointed by the World Bank for unresolved technical disputes
  • •and a Court of Arbitration (CoA) for intractable legal disputes. This sequencing is central to the current controversy. The IWT survived three wars and multiple diplomatic crises, but it was designed around hydrological data from the 1950s and contains no provisions for climate-induced changes in water availability — a growing structural limitation

The Topic Explained

The Permanent Court of Arbitration (PCA), established by the 1899 Hague Convention and headquartered at The Hague, is an intergovernmental organisation providing arbitration and dispute resolution services for states and international organisations. Pakistan approached the PCA to constitute a Court of Arbitration after bilateral negotiations over the Kishanganga and Ratle Hydroelectric Projects failed. These are run-of-river projects on western rivers over which India holds limited but contested rights, and Pakistan disputes their design parameters as violating the IWT.

India's core objection is procedural rather than substantive. The IWT's dispute resolution mechanism is explicitly sequential: technical disputes must first be addressed by the PIC, then referred to a Neutral Expert, and only thereafter — for specific categories of disputes — escalated to arbitration. …

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Related PYQs

2021GS1 Prelims

With reference to the Indus river system, of the following four rivers, three of them pour into one of them which joins the Indus direct. Among the following, which one is such river that joins the Indus direct?

AChenab
BJhelum
CRavi
DSutlej
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2017GS1 Prelims

What is the importance of developing Chabahar Port by India?

AIndia's trade with African countries will enormously increase.
BIndia's relations with oil-producing Arab countries will be strengthened.
CIndia will not depend on Pakistan for access to Afghanistan and Central Asia.
DPakistan, Iraq and India will facilitate and protect the installation of a gas pipeline.
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Practice MCQs

IRmedium

Consider the following statements regarding the Indus Waters Treaty (IWT) of 1960:

1.The eastern rivers — Ravi, Beas, and Sutlej — were allocated predominantly to Pakistan.

2.The treaty was brokered by the World Bank.

3.The treaty can be terminated by either party acting unilaterally.

4.The Permanent Indus Commission is the first tier of the treaty's dispute resolution mechanism.

How many of the above statements are correct?

AOnly one
BOnly two
COnly three
DAll four
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IRmedium

With reference to the Indus Waters Treaty's dispute resolution mechanism, consider the following pairs:

Mechanism — Role

1.Permanent Indus Commission — Routine data exchange and first-level technical resolution

2.Neutral Expert — Appointed by the World Bank for unresolved technical disputes

3.Court of Arbitration — First point of contact for all disputes under the treaty

Which of the pairs given above is/are correctly matched?

A1 and 2 only
B2 and 3 only
C1 and 3 only
D1, 2 and 3
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IRhard

The doctrine of 'rebus sic stantibus' in international law refers to which of the following?

AThe obligation of states to honour treaties in good faith once ratified
BThe right of a state to withdraw from a treaty when there has been a fundamental change of circumstances
CThe principle that a treaty binds only the signatory states and not their successors
DThe rule that international arbitration awards are automatically binding on all UN member states
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IRmedium

Consider the following statements regarding the Permanent Court of Arbitration (PCA):

1.It is a standing international court with permanent judges.

2.It was established under the Hague Convention of 1899.

3.India has accepted the PCA Court of Arbitration constituted on Pakistan's request as a valid forum under the Indus Waters Treaty.

Which of the statements given above is/are correct?

A1 only
B2 only
C1 and 3 only
D2 and 3 only
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IRmedium

Assertion (A): The Permanent Court of Arbitration ruled that the Indus Waters Treaty remains fully in force and cannot be unilaterally suspended by India.

Reason (R): The Indus Waters Treaty provides that it can only be modified or terminated through a further treaty agreed upon by both India and Pakistan.

ABoth A and R are true, and R is the correct explanation of A
BBoth A and R are true, but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
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