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13 August 2026

Cauvery water sharing dispute

The Cauvery water dispute is a perennial issue of federalism and inter-state resource management that frequently appears in UPSC Mains as a case study for constitutional and administrative mechanisms in water governance.

1 min read Day 18 of 26 2 questions 1 prelims

Notes

  • The Cauvery Water Management Authority (CWMA) has directed Karnataka to release 12,000 cusecs of water per day to Tamil Nadu for 15 days.
  • The decision was based on an assessment of current storage, inflows, and meteorological outlook for the Cauvery basin.
  • Karnataka reported a 47% deficit in cumulative inflows into its four Cauvery basin reservoirs compared to the 30-year average.
  • Tamil Nadu requested 37 tmc ft of water by the end of August, citing a 36% rainfall deficit in its basin area.
  • The CWMA chairperson noted that Karnataka's current storage is 77 tmc ft against a long-term average of 83 tmc ft, justifying the release.
  • The Union government clarified that the CWMA is mandated to act as a regulator and implementer of the Supreme Court-modified award.
  • Guidelines from the Central Water Commission (CWC) require the CWMA to convey views on the conformity of proposed water projects with the Cauvery Water Disputes Tribunal (CWDT) award.
  • There is currently no permanent, scientific distress-sharing formula for the Cauvery basin due to changing hydrological dynamics.

Part of a longer story

This is day 18 of 26 in Mekedatu dam project dispute between Karnataka and Tamil Nadu, which has been running since 21 June 2026. Reading it whole is usually worth more than reading today alone — the exam asks how something developed.

Questions

  1. Discuss the role of the Cauvery Water Management Authority (CWMA) in resolving inter-state water disputes and its mandate in ensuring compliance with judicial awards. 150 words
    Attempt this — 150 words in 8 min
    0 / 150 words 8:00
  2. The absence of a permanent, scientific distress-sharing formula for inter-state river basins poses a challenge to federal cooperation. Analyze this statement in the context of the Cauvery water dispute and suggest measures for effective water governance in India. 250 words
    Attempt this — 250 words in 11 min
    0 / 250 words 11:00

Prelims

  1. Which body is primarily responsible for the regulation and implementation of the Cauvery Water Disputes Tribunal award as modified by the Supreme Court?

Syllabus

Topics

Sources

250words.in · https://250words.in/daily/2026-08-13/cauvery-water-sharing-dispute