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Karnataka Ordered to Release Cauvery Water to Tamil Nadu as Supreme Court Upholds CWMA Directive
The has directed the to strictly comply with the Cauvery Water Management Authority's (CWMA) directions on releasing water to Tamil Nadu, while deferring any immediate coercive action. A bench comprising Justices Vikram Nath and Sandeep Mehta, hearing Tamil Nadu's plea for enforcement of the CWMA's order, noted that Karnataka had already released substantial water and that the current flow at the inter-state border had exceeded the mandated level. The court posted the matter for further review after one week, expecting a comprehensive on compliance.
This latest order comes in the backdrop of an escalating dispute over the sharing of Cauvery waters during a year marked by below-average monsoon rainfall. Tamil Nadu had approached the apex court alleging that Karnataka was not honouring the directions issued by the CWMA and the , thereby jeopardising the irrigation needs of farmers in the delta region. Karnataka, however, countered that it faced severe water scarcity and had already released more water than required under the earlier orders.
Background of the Cauvery Water Dispute
The Cauvery water-sharing conflict is one of India's longest-running interstate river disputes, dating back to agreements of and between the erstwhile Madras Presidency and the princely state of Mysore. The delivered its final award in , allocating water among Karnataka, Tamil Nadu, Kerala, and Puducherry. Subsequent litigation reached the Supreme Court, which modified the award in , leading to the establishment of the CWMA and the CWRC to oversee implementation.
Under the current framework, the CWRC issues periodic directions on water releases based on reservoir levels and rainfall forecasts. On , the CWRC directed Karnataka to release 3,500 cusecs of water per day to Tamil Nadu for 15 days. Later, on August 13, the CWMA endorsed a revised direction requiring Karnataka to release 12,000 cusecs per day for 15 days, taking into account the prevailing distress conditions.
Tamil Nadu's Allegations of Non-Compliance
During the hearing, , representing Tamil Nadu, argued that Karnataka had failed to implement the CWMA's directions despite having sufficient storage. He contended that Karnataka's reservoirs had 76% , yet Tamil Nadu had received only 14 TMC of water against its entitlement of 64 TMC under the CWDT award. Even after applying a distress-year reduction formula, he claimed Tamil Nadu should have received 55.29% of the available water, leaving a shortfall of approximately 20 TMC.
“We are not able to release any water to the agriculturists. It can’t be that they will keep all the waters,” Vaidyanathan submitted, emphasising the urgency of the situation for paddy cultivation in the Cauvery delta. The counsel also noted that the flow at Biligundlu, the key monitoring point on the inter-state border, remained below the mandated 12,000 cusecs for several days after the latest direction.
Karnataka's Rebuttal and Compliance Claims
Appearing for Karnataka, disputed the allegations, asserting that the state had fully complied with the CWRC's earlier direction to release 3,500 cusecs. He submitted that between and , Karnataka had actually released 86,797 cusecs against the required 45,500 cusecs, effectively doubling the mandated volume. Divan also argued that the CWMA's later direction of 12,000 cusecs had been met, with the flow at Biligundlu reaching 12,607 cusecs on the morning of the hearing.
“We are not releasing any water, it is because God has been kind and flow has come. As of this morning it has exceeded 12,000 and those gates have been opened,” Divan remarked, attributing the increase to natural inflows following rainfall in the catchment area. He acknowledged that the flow had been below 12,000 cusecs during the first four to five days but assured the court that the state would strive to maintain the required level, albeit with difficulty due to its own water shortage.
Karnataka also questioned Tamil Nadu’s calculation of the claimed shortfall, maintaining that the 2026-27 water year had been declared a " " and that Tamil Nadu's demand for an additional 26.954 TMC was not justified under the Cauvery Water Disputes Tribunal award. The state argued that two expert bodies had already examined the issue and that the court’s role should be limited to ensuring compliance rather than revisiting the technical data.
The Court's Observations and Direction
After hearing both sides, the bench noted that Karnataka had released more water than the earlier direction required during the relevant period. Justice Vikram Nath observed, “Instead of 9.720, if you add the total, you already have more than that. Earlier also they (Karnataka) have released much more water.” The court declined to issue any fresh , stating that Tamil Nadu currently had sufficient water and that the situation would be reviewed after a week.
“Let this matter be posted after a week so that further status regarding the release of water can be reported,” the bench ordered, while directing Karnataka to continue complying with the CWMA directions. The court specifically sought an updated on the actual water releases, reservoir levels, and the cumulative shortfall, if any.
Legal Implications and Broader Impact
The Supreme Court's nuanced approach reflects the delicate balance required in interstate water disputes, where the court must respect the expertise of statutory authorities like the CWMA while ensuring that do not suffer irreparable harm. By declining to pass a immediately, the court signalled that it expects and that any will be calibrated based on objective data.
For legal practitioners, this case underscores the importance of timely under the . The existence of the CWMA and CWRC provides a for resolving disputes, but the Supreme Court retains the power to step in when there is a failure to implement directions. The court's reliance on compliance reports and its willingness to grant a short adjournment for monitoring is a practical approach that avoids constitutional confrontation.
The dispute also highlights the challenges of managing shared river resources in the face of climate variability and increasing demand. The legal framework, while robust, depends heavily on accurate hydrological data and . The court's direction to provide a after a week will likely incentivise Karnataka to maintain the flow, as non-compliance could invite stricter measures.
Conclusion
As the Cauvery water dispute enters another critical phase, the Supreme Court's order serves as a reminder that the must govern interstate water sharing. Both Karnataka and Tamil Nadu are expected to adhere to the orders of the CWMA, with the apex court acting as the ultimate guarantor of fairness. Farmers on both sides of the border await the outcome, as the next week will reveal whether Karnataka can sustain the mandated release of 12,000 cusecs per day. The case is scheduled for further hearing on [date], and the legal community will closely watch how the court navigates the competing claims in one of India's most emotive water conflicts.
