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Relevance: GS-II (Inter-State Relations, Dispute Redressal Mechanisms) Source: Water Dispute Updates, 2026

1 · What is the core issue?

The Cauvery River is a lifeline for farmers in both Karnataka and Tamil Nadu. Because it doesn’t rain enough every year, a central committee (CWRC) decides how much water upstream Karnataka must release to downstream Tamil Nadu.
Recently, the CWRC ordered Karnataka to release 3,500 cusecs (roughly 4.5 billion cubic feet) of water to Tamil Nadu over 15 days. Both states are unhappy. Karnataka claims it doesn’t have enough water for its own farmers due to bad rainfall. Tamil Nadu complains that this amount is far too small to save their dying kuruvai (short-term) crops. This recurring fight shows how tough it is for India to share natural resources when there is a drought.

2 · Understanding the Conflict

Step 1: The Drought Assessment
The CWRC checks the rainfall and water levels. They found that Karnataka’s reservoirs had 60% less water coming in than the 30-year average.
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Step 2: The Order to Release
Despite the low rainfall, the committee noted Karnataka’s dams were still 65% full. Thus, they ordered Karnataka to release some water to save Tamil Nadu’s crops.
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Step 3: State Pushbacks
Karnataka immediately appealed against this, citing local needs. Tamil Nadu also protested, demanding much more water than ordered.
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Step 4: The Need for a Formula
The core problem remains: India desperately needs a permanent “distress-sharing formula” so states stop fighting every time the monsoon fails.

3 · Key River Dispute Bodies Explained Simply

CWMA
The Authority
The Cauvery Water Management Authority (CWMA) is the top body created to implement the Supreme Court’s orders on water sharing between the states.
CWRC
The Regulation Committee
The Cauvery Water Regulation Committee (CWRC) works under the CWMA. It does the daily ground work—checking rainfall, dam levels, and deciding exactly how much water to release.
Article 262
The Constitutional Power
This Article gives the Indian Parliament the power to solve inter-state river disputes and even stop the Supreme Court from interfering in these fights.
National Asset
The Supreme Court Stand
In 2018, the Supreme Court declared that no single state “owns” an inter-state river. The Cauvery is a national asset meant to be shared fairly.

UPSC Prelims Quick Facts: The Cauvery Basin
Constituent States The Cauvery basin covers four main areas: Karnataka, Tamil Nadu, Kerala, and Puducherry. All have representatives in the CWRC.
Key Reservoirs The CWRC monitors 8 dams. Key ones include KRS and Kabini (Karnataka) and Mettur (Tamil Nadu).
The 1956 Act The Inter-State River Water Disputes Act, 1956 allows the Central Government to set up specialized Tribunals to settle river fights when talks fail.
Distress Formula Currently, allocations are fixed numbers. Experts suggest India needs a “proportional sharing” formula (a percentage) to handle drought years fairly.

MCQ Practice Question
Q. With reference to the resolution of inter-state water disputes in India, consider the following statements:

  1. Article 262 of the Constitution explicitly empowers Parliament to adjudicate disputes relating to the waters of inter-state rivers.
  2. The Inter-State River Water Disputes Act, 1956 gives the Supreme Court original and exclusive jurisdiction over all river water conflicts.
  3. The Supreme Court has legally declared the Cauvery River to be a “national asset”.

Which of the statements given above is/are correct?
(a) 1 and 2 only    (b) 1 and 3 only    (c) 2 and 3 only    (d) 1, 2 and 3

Answer: (b) 1 and 3 only

  • Statement 1 — Correct: Article 262 empowers the Parliament to create laws (like the 1956 Act) to settle inter-state river disputes.
  • Statement 2 — Incorrect (the trap): The 1956 Act actually allows Parliament to exclude the jurisdiction of the Supreme Court, creating specialized Tribunals to handle these disputes instead.
  • Statement 3 — Correct: In its landmark 2018 judgement, the Supreme Court declared that inter-state rivers are national assets and no single state holds exclusive ownership over them.
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