Supreme Court Directs Karnataka to Comply with CWMA Directions on Cauvery Water Release

The Supreme Court of India directed the Karnataka government to comply with the directions of the Cauvery Water Management Authority (CWMA) on water release to Tamil Nadu. The bench comprised Justices Vikram Nath and Sandeep Mehta, and the next hearing was fixed for 24 August 2026.

Cauvery River Water Governance

The Cauvery is an inter-state river system shared by Karnataka, Tamil Nadu, Kerala and Puducherry. Water allocation and release in the basin are governed by tribunal awards, statutory bodies and court directions under India’s inter-state river dispute framework.

Cauvery Water Management Authority

The CWMA is a statutory authority created under the Cauvery Water Management Scheme, 2018. It monitors storage, assesses water availability and issues release directions for the Cauvery basin, including monthly and daily discharge requirements.

Reservoir Storage and Water Measurement

Water release in the Cauvery system is measured in cusecs and TMC. One cusec means one cubic foot of water per second, while one TMC means one thousand million cubic feet. The current directive required Karnataka to release 12,000 cusecs daily from 12 August 2026 to 27 August 2026.

Important Facts for Exams

• The Cauvery Water Disputes Tribunal gave its final award in 2007, and the award was later modified by the Supreme Court in 2018.
• The Cauvery Water Management Authority and the Cauvery Water Regulation Committee were set up under the 2018 scheme.
• Biligundlu is an important interstate measuring point on the Cauvery river between Karnataka and Tamil Nadu.
• Krishna Raja Sagar reservoir is one of the major reservoirs in the Cauvery basin in Karnataka.

Current Dispute Facts

Tamil Nadu’s counsel stated that the state had received 14.814 TMC against an entitlement of 64 TMC, leaving a backlog of about 20 TMC. Karnataka’s counsel stated that the state had complied with and exceeded the earlier mandate of 3,500 cusecs daily until 11 August 2026.

The Supreme Court noted that Karnataka’s release from the Krishna Raja Sagar reservoir reached Biligundlu and crossed the required 12,000 cusecs by 8:00 a.m. on 17 August 2026. The court asked the CWMA for a fresh status report before the next hearing on 24 August 2026.