Supreme Court Refuses Fresh Plea Seeking 70 TMC Cauvery Water Reallocation From Tamil Nadu To Karnataka
Supreme Court said Tamil Nadu and Karnataka were already contesting the Cauvery water dispute and entertaining petitions by societies would have “no end”
Supreme Court refused to entertain a fresh plea seeking reallocation of 70 TMC of Cauvery water from Tamil Nadu’s share to Karnataka
The Supreme Court on Tuesday refused to entertain a fresh plea seeking reallocation of 70 TMC of Cauvery river water from Tamil Nadu’s share to Karnataka, observing that the two States were already contesting the dispute before the Court.
The Bench of Justices Vikram Nath and Sandeep Mehta declined to entertain the petition, which had sought several reliefs, including reallocation of 70 TMC of Cauvery water to Karnataka from Tamil Nadu’s share.
“If we start entertaining petitions of societies in a dispute between two states, which are already contesting the matter, then there will be no end to it,” the Bench observed.
The Court accordingly refused to entertain the plea.
The development comes amid the ongoing dispute between Karnataka and Tamil Nadu over the release and allocation of Cauvery water.
The Karnataka government had informed the Supreme Court that it had released excess water to Tamil Nadu as of August 31 and was complying with the direction of the Cauvery Water Management Authority (CWMA) to ensure a flow of 9,000 cusecs of water to Tamil Nadu.
On August 25, the CWMA had upheld the recommendation of the Cauvery Water Regulation Committee (CWRC), directing Karnataka to ensure a flow of 9,000 cusecs of Cauvery water to Tamil Nadu for 15 days.
Tamil Nadu, meanwhile, had informed the Supreme Court that it had brought the backlog of water to the authority’s notice, but no direction had been passed in that regard. The Supreme Court had been hearing Tamil Nadu’s plea seeking directions to Karnataka for immediate release of Cauvery water.
Earlier, on August 17, the Supreme Court had directed Karnataka to ensure compliance with the CWMA’s direction concerning the release of Cauvery water to Tamil Nadu. Tamil Nadu had maintained that it was not receiving its due share of Cauvery water in a rain-deficient year.
On August 3, the Tamil Nadu government approached the Supreme Court seeking immediate release of water from Karnataka. In its plea, the State had contended that both the quantum allocated to it by the CWRC and the quantity released by Karnataka were insufficient.
Background
Notably, Dravida Munnetra Kazhagam (DMK) had moved the Supreme Court seeking urgent release of Cauvery River water by Karnataka to Tamil Nadu in compliance with the recent directions of the Cauvery Water Management Authority which recently upheld the direction of the Cauvery Water Regulation Committee to release 3500 cusecs per day to Tamil Nadu, for 15 days.
The Cauvery water dispute is a long-standing dispute between Karnataka and Tamil Nadu which started way back in 1974 when Karnataka, the upper riparian State, started diverting water without Tamil Nadu's consent.
DMK has claimed that as per the final order of the Tribunal, the monthly stipulated flows to be ensured by Karnataka at Biligundlu during June to January every year are as follows: June to September - 123.14 TMC, October to January - 44.11 TMC, June to January - 167.25 TMC.
The application further highlights that in the current water year, the South-West Monsoon has been deficient in the Cauvery basin. It is alleged that the flows realized at Biligundlu have been dismally low - only about 10% of what is stipulated for the period. According to the applicant's estimate (accounting for distress-sharing basis), the backlog due to Tamil Nadu at Biligundlu stood at 9.46 TMC on July 26 (to fulfill which requirement about 7000 cusecs per day must be released for 15 days).
DMK submits that despite the decisions of the statutory authorities, Karnataka has not released the water. On the contrary, the state representatives have been reported as saying that the state will not release the water. The application underlines the significance of the current period by highlighting that out of the annual quantum of 167.25 TMC, nearly 3/4th is required to be realized at Biligundlu between June-September, as this is the time when the Kuruvai paddy crop is raised and operations for the Samba crop are undertaken.
Last year, Supreme Court had also refused to interfere with the Mekedatu Reservoir Project proposed by the Karnataka government in Cauvery river against which a plea was made by State of Tamil Nadu against the balancing reservoir at Mekedatu in Kanakapura Taluk of Bengaluru South District on the Karnataka-Tamil Nadu border.
Earlier, Union government had clarified that it has not accorded “any approval" for the construction of new dams across the Cauvery river. In a written reply to a question in the Rajya Sabha, Raj Bhushan Choudhary, minister of state for Jal Shakti, had said no permission was given for a new dam.
Notably, in 2023 the Supreme Court had also refused to interfere with the Cauvery Water Management Authority (CWMA) order on directions to the State of Karnataka on releasing Cauvery water to Tamil Nadu. A bench comprising Justices BR Gavai, PS Narasimha and Prashant Kumar Mishra had opined that the CWMA and CMRC consisted of various experts in the field of water resource management they had taken into consideration the shortfall of water this year before passing said order.
Case Title: Cauvery Nadhi Rakshna Samithi v. Union of India
Bench: Justices Vikram Nath and Sandeep Mehta
Hearing Date: September 22, 2026