Discuss the institutional mechanism created post-2018 for Cauvery water management and evaluate its effectiveness in resolving recurring Karnataka–Tamil Nadu disputes.

Inter-State river disputes fall under Article 262 and the Inter-State River Water Disputes Act, 1956. After the Supreme Court modified the Cauvery Tribunal's award in February 2018 [1], the Centre notified the Cauvery Water Management Scheme, 2018, creating a permanent two-tier machinery that has improved regulation without ending the friction.

The post-2018 architecture

• CWMA — the apex body, headed by a Chairman with two whole-time members, two Central representatives (Water Resources and Agriculture) and four part-time State members (Karnataka, Tamil Nadu, Kerala, Puducherry) [2].
• Functions: storage, apportionment and regulation of Cauvery water, supervision of reservoir operation, and regulating Karnataka's releases at the inter-State contact point, measured at Biligundlu [2][3].
• CWRC — the technical arm, a Chairman plus eight members including State representatives, IMD, Central Water Commission and Agriculture Ministry; it collects reservoir data and issues periodic release directions [2].

Merits — where it works

• Permanence over ad-hocism: a standing regulator replaced episodic tribunal references, enabling season-by-season calibration — 3,500 cusecs in July 2026 rising to 6,000 cusecs daily for 15 days from 9 September 2026 [3].
• Layered review: CWRC orders are appealable to CWMA, which heard and overruled Karnataka's plea the same week [3].
• Evidence-based allocation using rainfall, storage and cropping data reduces purely political bargaining.

Limitations

• No independent enforcement wing — compliance rests on State goodwill.
• Weak political acceptance: Karnataka termed the order "illogical" and signalled a Supreme Court appeal, reopening litigation Article 262 sought to avoid [3].
• No distress-sharing formula: fixed-quantum releases sit uneasily with drought years and climate variability, when Karnataka's reservoirs run "critically inadequate" [3].
• Annual recurrence of the same conflict shows a structural, not episodic, problem.

The mechanism has succeeded as a technical regulator but not yet as a dispute-resolver. Adopting a transparent distress-sharing formula, real-time telemetry at gauge points, and the single permanent tribunal with a Dispute Resolution Committee envisaged in the 2019 amendment can convert compliance-by-order into cooperative federalism, making water a shared national resource rather than a contested regional claim.