Cauvery water dispute: In SC, Tamil Nadu claims 20 TMC deficit as Karnataka says many districts face drought
Appearing before a Bench headed by Justice Vikram Nath, both State governments, however, concurred on the point that the Cauvery water was a “very sensitive” issue for them; the court gave Karnataka a week to file its response while scheduling the next hearing on October 12
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Context
The is currently hearing a plea from Tamil Nadu alleging a 20 TMC shortfall in Cauvery water release from Karnataka. Karnataka claims it is facing a severe drought and has complied with its obligations as an upper riparian state, highlighting the ongoing tension in interstate water sharing during deficit monsoon years.
UPSC Perspectives
Polity
The Cauvery dispute highlights the complexities of cooperative federalism and the constitutional framework for resolving interstate water conflicts. Under of the Constitution, Parliament can adjudicate disputes regarding the use, distribution, or control of waters of any interstate river. The provides the legal basis for setting up tribunals. The establishment of the (CWMA) and the (CWRC) represents an institutional mechanism to implement the final award of the Cauvery Water Disputes Tribunal. This case underscores the challenges in enforcing tribunal awards, especially during distress years when states prioritize domestic needs over riparian obligations. The Supreme Court's intervention, despite the existence of expert bodies like the CWMA, shows the continuous legal friction in water sharing arrangements.
Geography
The dispute is deeply rooted in the physical geography and monsoon patterns of the Indian peninsula. Karnataka, as the upper riparian state, relies heavily on the South-West Monsoon for inflows into its reservoirs (like Kabini). Conversely, Tamil Nadu, the lower riparian state, depends on both the South-West Monsoon for its Kuruvai (Kharif) crop in the Cauvery delta and the subsequent North-East Monsoon for its later agricultural cycles. The current conflict is exacerbated by variations in the monsoon, potentially influenced by broader climatic phenomena like El Nino, which Karnataka cited as a factor affecting its rainfall. The geographical reality that the river flows through both states necessitates a shared approach, but varying rainfall patterns create competing demands for the limited water resources in the basin.
Environment
Beyond agriculture and domestic needs, the dispute touches upon crucial aspects of water resource management and environmental sustainability. The arguments mention the need to consider 'industrial and environmental flow' alongside drinking water and irrigation. Maintaining an ecological flow (the minimum water required to sustain a river's ecosystem) is increasingly recognized as vital for river health, biodiversity, and combating salinity intrusion in estuarine areas, particularly in the Cauvery delta. The recurring droughts and disputes point to the urgent need for long-term strategies such as climate-resilient agriculture, efficient irrigation techniques (like drip and sprinkler systems), and improved catchment area management to ensure sustainable water use in the face of changing climate patterns.