Karnataka’s renewed push to secure federal clearance for the Mekedatu water project has further strained the decades-old water-sharing dispute with Tamil Nadu, as the state government allocates ₹1,000 crore in its current budget to build a reservoir designed to meet Bengaluru’s growing drinking water needs. The project, situated roughly 100 kilometers from the city, would store water from the Cauvery River at a point where the rocky terrain and the confluence of the Arkavathy and Cauvery rivers form a scenic area known as Sangama.
However, its implementation remains contingent upon approval from the central government in New Delhi.
Decades of Dispute Over a Shared River
Competing claims over the Cauvery River have defined Karnataka-Tamil Nadu relations for decades, with both states repeatedly clashing in legal battles and political forums over the allocation of the river’s waters. The Mekedatu project, which would construct a barrage and reservoir inside the Cauvery Wildlife Sanctuary, has become the latest flashpoint.
The sanctuary is home to near-threatened and endangered species including the grizzled giant squirrel and the Deccan Mahsheer fish, and its picturesque landscape along the river makes it a popular tourist destination. Environmental concerns over disrupting this habitat now intersect with the urban development demands of Bengaluru, a major city that relies heavily on the Cauvery for its municipal water supply. One local resident noted that his area is already covered under the Cauvery water supply scheme, indicating the existing dependence on the river.
Political Maneuvering and Conditional Resolutions
The Karnataka Cabinet has formally approved resolutions passed by both the state Legislative Assembly and Legislative Council that urge the Centre to green-light the Mekedatu project. In a related move, the Cabinet also approved a resolution demanding that the detailed project report (DPR) for a separate water linkage project pursued by Tamil Nadu—the Godavari-Krishna-Pennar-Cauvery-Vaigai-Gundar project—should not be cleared until the distribution of rightful water shares among all basin states is properly determined. This condition effectively links the two projects, introducing a new layer of complexity to the inter-state negotiation process.
Both Karnataka and Tamil Nadu depend on the Cauvery River for agriculture and urban needs, and any decision on one project carries implications for the other’s water security and diplomatic relations.
Environmental and Logistical Challenges Ahead
The Mekedatu project’s location inside the Cauvery Wildlife Sanctuary raises significant environmental questions. Any construction would directly affect the habitat of species already under pressure from human activity.
The area’s rocky terrain and the meeting point of two rivers—the Arkavathy and the Cauvery—also present engineering hurdles. The reservoir would primarily serve to secure drinking water for Bengaluru, a rapidly expanding metropolis whose water requirements already strain existing supply schemes. The project’s outcome will not only influence the water security of that major urban center but also set a precedent for how the Cauvery River is managed and shared between the two states.
As the Centre deliberates on Karnataka’s request, the balance between urban development, environmental protection, and interstate equity remains at the heart of the debate. The final decision will have lasting consequences for the region’s politics, ecology, and resource allocation.
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