Cauvery committee chief asks Tamil Nadu, Karnataka to come up with distress-sharing formula
The Chairman of the Cauvery Water Regulation Committee (CWRC), Vineet Gupta, called on Tamil Nadu and Karnataka to work out a distress-sharing formula for years of deficient rainfall or shortfall in Cauvery river flows
Criticism directed at the CWRC and the Cauvery Water Management Authority (CWMA) over their handling of water-sharing disputes was rejected by the committee chief
The 2023-24 water year was cited as a precedent in which the two river-basin states had arrived at a workable distress-sharing mechanism through the CWRC/CWMA process
The statement comes amid ongoing disputes between the two states over the release of water at the inter-state border monitoring point at Biligundlu
Cauvery Water Management Authority (CWMA) and Cauvery Water Regulation Committee (CWRC)
The CWMA and CWRC are the two-tier institutional mechanism set up by the Central Government in 2018 to implement the final award of the Cauvery Water Disputes Tribunal, as modified by the Supreme Court. They were notified under Section 6A of the Inter-State River Water Disputes (ISRWD) Act, 1956, which was inserted precisely to enable the creation of standing implementation bodies after tribunal awards.
Key Details
- The CWMA is the apex decision-making body, comprising a chairman, a secretary, and eight members (including full-time and part-time members, with representation from the party states of Tamil Nadu, Karnataka, Kerala, and Puducherry); it functions under the Union Ministry of Jal Shakti and is headquartered in Delhi
- The CWRC is the subordinate technical/regulatory body that monitors reservoir levels, storage, and inflows on a fortnightly basis and issues directions on water release (such as the flow requirement at Biligundlu, the inter-state gauge point)
- Both bodies were constituted following the Supreme Court's 2018 judgment in the Cauvery water dispute case, which upheld the Tribunal's 2007 final award with a marginal upward revision in Karnataka's share to account for Bengaluru's drinking water needs
- Their mandate is implementation and monitoring of the Tribunal award, not fresh adjudication of the water-sharing dispute itself
The CWRC chief's remarks defend the current implementation architecture (CWMA/CWRC) against criticism, while flagging that a durable "distress-sharing formula" — a rule for apportioning shortfalls during deficient monsoon years — has not been institutionalised beyond the ad hoc 2023-24 precedent.
Inter-State River Water Disputes Act, 1956 and Article 262
Article 262 of the Constitution empowers Parliament to legislate for adjudication of disputes over waters of inter-state rivers and river valleys, and to bar the Supreme Court or any other court from exercising jurisdiction over such disputes if Parliament so provides by law. The Inter-State River Water Disputes Act, 1956, enacted under this provision, establishes the framework for constituting tribunals.
Key Details
- Under the Act, a dispute is referred to a Water Disputes Tribunal only if it cannot be settled by negotiation; the Tribunal's award is final and binding, and ordinarily not subject to appeal in the Supreme Court, though writ jurisdiction has been exercised in practice (as in the Cauvery case, where the Supreme Court modified the Tribunal's 2007 award in 2018)
- The Cauvery Water Disputes Tribunal was constituted in 1990 and delivered its final award in 2007, allocating specific annual shares to Tamil Nadu, Karnataka, Kerala, and Puducherry out of the assessed 740 TMC (thousand million cubic feet) of dependable flow at Billigundlu
- The 2018 Supreme Court judgment (in the matter of State of Karnataka v. State of Tamil Nadu) reduced Tamil Nadu's share and increased Karnataka's allocation for Bengaluru's drinking water requirement, while directing the Centre to frame the CWMA/CWRC scheme within a fixed timeframe
The absence of a codified distress-sharing rule within the Tribunal award or the 2018 judgment is precisely why disputes recur in low-rainfall years, forcing the CWRC to broker year-specific arrangements such as the 2023-24 precedent referenced by its chairman.
Centre-State and Inter-State Water Disputes as a Federalism Issue
Water is a State subject under Entry 17 of the State List (List II, Seventh Schedule), but Parliament can legislate on inter-state rivers under Entry 56 of the Union List, creating a recurring site of Centre-State and inter-state friction that is tested regularly in GS2 federalism questions.
Key Details
- Entry 17, List II: "Water... subject to the provisions of Entry 56 of List I"; Entry 56, List I: regulation and development of inter-state rivers and river valleys "to the extent declared by Parliament by law to be expedient in the public interest"
- Other prominent inter-state river disputes adjudicated through similar tribunals include Krishna, Godavari, Narmada, Ravi-Beas, and Mahadayi/Mahanadi
- The Inter-State River Water Disputes (Amendment) Act, 2019 introduced a single, permanent tribunal with multiple benches (replacing the earlier practice of setting up a fresh tribunal for each dispute) and prescribed statutory timelines for adjudication
The Cauvery case illustrates the structural tension between water as a state resource and the need for a nationally supervised mechanism (CWMA/CWRC) to enforce inter-state sharing, especially in years of hydrological distress when the underlying award's fixed allocations become difficult to honour.
- CWMA and CWRC constituted: 2018, under Section 6A of the Inter-State River Water Disputes Act, 1956
- Cauvery Water Disputes Tribunal: constituted 1990; final award delivered 2007
- Supreme Court judgment modifying the award: 2018
- Assessed dependable flow at Billigundlu (basis of Tribunal allocation): approximately 740 TMC
- Riparian states/UT covered by the award: Tamil Nadu, Karnataka, Kerala, and Puducherry
- CWMA composition: chairman, secretary, and eight members (full-time and part-time, including state representatives)
- Constitutional basis: Article 262 (adjudication of inter-state river water disputes) and Entry 56, Union List (regulation of inter-state rivers)
- Precedent cited for distress-sharing: water year 2023-24