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Tamil Nadu Moves SC for CWMA Order: 3,500 Cusecs Cauvery Water Release from Karnataka

Target:UPSC GS-IIMPSCSSC GATeachingPrelims HighMains MediumStatic GK Link
03 Aug 2026
~2 min
Source: The Hindu
Key Data:3,500 cusecs15 days4.536 TMC26.954 TMC77.537 TMC23% rainfall deficit (KRS catchment)
Bodies:Supreme Court of IndiaCentral Water Management Authority (CWMA)Cauvery Water Regulations Committee (CWRC)Cauvery Water Disputes Tribunal
Practice MCQs from today's news ▸
What This Article Covers

1.Tamil Nadu filed a petition in the Supreme Court seeking implementation of CWMA's July 30 decision to release 3,500 cusecs for 15 days from Kabini and KRS reservoirs.

2.The state claims Karnataka has willfully defied the Cauvery Tribunal's allocation despite having adequate storage of 77.537 TMC as of August 3, 2026.

3.Rainfall deficits of 23% to 42% in upstream catchments have worsened the distress, making the case a key exam topic on inter-state water disputes (Article 262) and institutional mechanisms like CWMA/CWRC.

The Big Picture
Prelims · HighMains · Medium

Tamil Nadu has approached the Supreme Court to enforce a Central Water Management Authority (CWMA) order directing Karnataka to release 3,500 cusecs of Cauvery water for 15 days. This is crucial for the ongoing irrigation season and highlights the persistent inter-state water dispute, with implications for federalism, water management, and judicial intervention.

Exam Lens

Quick Exam Facts From News

CWMA Decision DateJuly 30, 2026
Water Release Demanded3,500 cusecs for 15 days
Total Volume Demanded (15 days)4.536 TMC
Shortfall Claimed (June 1 – Aug 12)26.954 TMC
Karnataka's Storage (Aug 3, 2026)77.537 TMC (KRS, Kabini, Harangi, Hemavathy)
Rainfall Deficit (KRS catchment)23%
Rainfall Deficit (Kabini catchment)42%
Annual Stipulated Flows (June–Sept)123.14 TMC
Total Annual Allocation (incl. env. flows)177.25 TMC

1-Minute Revision

  • ›CWMA Decision Date: July 30, 2026
  • ›Water Release Demanded: 3,500 cusecs for 15 days
  • ›Target this Data: 3,500 cusecs for 15 days from July 29, 2026; 4.536 TMC; 26.954 TMC shortfall; 77.537 TMC storage in Karnataka's four reservoirs as on Aug 3, 2026.
  • ›Target this Nodal Body: Central Water Management Authority (CWMA) and Cauvery Water Regulations Committee (CWRC).
  • ›Target this Legal Point: Article 262 of the Constitution and the Inter-State Water Disputes Act, 1956.

Mastered this topic? Test your knowledge with a full MCQ quiz.

Practice exam-style questions, track your score, and strengthen your recall.

Q1Static LinkageEasy

Which tribunal was constituted under the Inter-State Water Disputes Act to adjudicate the Cauvery water sharing dispute?

Q2Statement-basedHard

Consider the following statements:

1. The Central Water Management Authority (CWMA) decided on July 30, 2026 to release 3,500 cusecs from Kabini and Krishna Raja Sagara reservoirs for 15 days.

2. Tamil Nadu’s petition sought a direction to Karnataka to release 4.536 TMC of water forthwith as per the pro-rata shortfall.

3. The actual flows realised at Billigundulu from July 29 to August 2 were in the range of 158 to 530 cusecs.

Which of the statements given above is/are correct?

Q3Data-centricMedium

According to the article, what was the total gross storage in Karnataka's four major reservoirs (KRS, Kabini, Harangi, Hemavathy) as on August 3, 2026?

Q4Application/ImpactMedium

What is the primary objective of Tamil Nadu's petition before the Supreme Court in this case?

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