Tamil Nadu CM Vijay seeks PM Modi’s intervention in Mekedatu issue
He also demands withdrawal of the Rajya Sabha reply by Union Minister of State for Jal Shakti
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Context
The Chief Minister of Tamil Nadu has urged the Prime Minister to intervene and halt any statutory or administrative approvals for Karnataka's proposed Mekedatu dam project across the Cauvery river. Tamil Nadu argues the project violates the award and subsequent Supreme Court judgments by potentially altering the regulated water flow without the consent of lower riparian states.
UPSC Perspectives
Polity
The Mekedatu issue highlights the complexities of inter-state water disputes in India's federal structure. Under the Constitution, water is a State subject (), but the Union Government has powers regarding the regulation and development of inter-state rivers (). empowers Parliament to adjudicate disputes, leading to the enactment of the . Tamil Nadu's reliance on the (CWDT) award and the Supreme Court's 2018 judgment emphasizes the binding nature of these mechanisms. The core legal contention revolves around the rights of lower riparian states; Tamil Nadu, citing the Alamatti case precedent, asserts that an upper riparian state (Karnataka) cannot unilaterally construct a dam altering river flow without consent. This dispute tests the efficacy of statutory tribunals and the Supreme Court's role in enforcing cooperative federalism.
Geography
The Cauvery River basin is a critical geographical and agricultural lifeline for southern India, shared primarily by Karnataka and Tamil Nadu, with smaller shares for Kerala and Puducherry. The river originates in the Brahmagiri hills of Karnataka and flows through Tamil Nadu before draining into the Bay of Bengal. The proposed Mekedatu balancing reservoir project aims to store water to supply drinking water to Bengaluru and generate hydroelectric power. However, its location near the Karnataka-Tamil Nadu border raises concerns for Tamil Nadu regarding its impact on the regulated flow regime. The CWDT established specific monthly release schedules (quantum and pattern) to ensure equitable distribution, particularly crucial during deficit rainfall years. Tamil Nadu fears the dam will impound flows meant for its downstream agricultural areas in the Cauvery delta, affecting consumptive use and food security.
Governance
This dispute underscores the challenges in water resource governance and the need for institutional mechanisms for coordinated management. The article points to the rejection of Karnataka's Detailed Project Report (DPR) by the in 2019 for non-compliance with the Tribunal Award, demonstrating the critical role of central regulatory bodies in maintaining oversight. The CWDT's principles, such as mandating joint agreements for even minor projects (like Kerala's Pambar project), highlight the necessity of mutual agreement and consultation among basin states. Effective governance of inter-state rivers requires moving beyond purely engineering solutions to encompass legal, environmental, and socio-economic considerations, ensuring that any infrastructure development respects established riparian rights and the decisions of regulatory authorities.