CWMA meets July 22 over Cauvery shortfall; TN reports 21 tmc ft deficit
Synopsis
Tamil Nadu is staring at a 21 tmc ft Cauvery water deficit with Mettur dam at barely 63% of its full level — and the farming season is ticking. The CWMA convenes Wednesday in a dispute where Karnataka's reservoirs show 31.61 tmc ft of inflows but only 5.26 tmc ft of outflow, a gap that is fast becoming a political flashpoint.
Key Takeaways
The CWMA is scheduled to meet in New Delhi on 22 July over Tamil Nadu's Cauvery water shortfall.
Tamil Nadu had received only 3.44 tmc ft at Biligundulu since 1 June , against a deficit of nearly 21 tmc ft .
Karnataka's four Cauvery basin reservoirs recorded 31.61 tmc ft of inflows but released only 5.26 tmc ft downstream.
Mettur dam stood at 75.14 feet against its full level of 120 feet , with storage at 37.3 tmc ft of 93.47 tmc ft capacity.
AIADMK General Secretary Edappadi K.
Palaniswami criticised CM C.
Joseph Vijay for failing to press Karnataka for releases.
The CWRC is next scheduled to review the situation on 28 July .
The Cauvery Water Management Authority (CWMA) is set to convene in New Delhi on Wednesday, 22 July, as Tamil Nadu grapples with a widening shortfall in Cauvery water receipts — reporting a deficit of nearly 21 thousand million cubic feet (tmc ft) against its due share for the current water year. The meeting comes amid mounting anxiety over the impact of delayed releases on irrigation across the state's critical delta districts.
The Scale of the Deficit
As of 19 July, Tamil Nadu had received only around 3.44 tmc ft of water at Biligundulu — the inter-state measuring point on the Karnataka-Tamil Nadu border — since 1 June. This leaves the state nearly 21 tmc ft short of the quantity due under the Cauvery water-sharing arrangement for the corresponding period.
Water resources experts in Chennai have highlighted the stark disparity between inflows into Karnataka's reservoirs and the volume actually released downstream. While the four major reservoirs in the Cauvery basin in Karnataka had collectively received around 30 tmc ft of inflows since the start of the current water year, Tamil Nadu had received less than 4 tmc ft in the same period.
Karnataka Reservoir Data
Data from the Karnataka State Natural Disaster Monitoring Centre showed that, as of Monday, cumulative inflow into the four reservoirs stood at 31.61 tmc ft, while combined outflow was only 5.26 tmc ft. The reservoirs together held approximately 59 tmc ft of water against a total storage capacity of 114.57 tmc ft.
This comes a week after the Cauvery Water Regulation Committee (CWRC) heard submissions from both states but deferred a decision, opting instead to review the evolving situation at its next scheduled meeting on 28 July.
Mettur Dam Under Strain
Concerns have also intensified over storage levels at the Mettur dam, the principal irrigation source for the Cauvery delta. On Tuesday morning, the reservoir's water level stood at 75.14 feet against its full reservoir level of 120 feet, with storage at around 37.3 tmc ft compared to its total capacity of 93.47 tmc ft. Farmers in the delta region are reportedly facing disruptions to cultivation activities, with agricultural labourers also bearing the brunt of delayed irrigation releases.
Political Pressure Mounts
AIADMK General Secretary Edappadi K. Palaniswami on Tuesday criticised Chief Minister C. Joseph Vijay, alleging that the TVK-led state government had failed to secure Tamil Nadu's rightful share of Cauvery water. Palaniswami claimed that Vijay had not effectively engaged with Karnataka Chief Minister D.K. Shivakumar to press for releases, and accused the Karnataka government of failing to honour the Supreme Court's directions on the dispute.
He urged the Tamil Nadu government to intensify pressure on Karnataka and secure the immediate release of the state's due share, warning that farmers in the Cauvery delta were growing increasingly anxious as irrigation water remained unreleased.
What Happens Next
All eyes are now on the CWMA meeting on 22 July and the subsequent CWRC review on 28 July. The outcome of these deliberations will be closely watched by farming communities across Tamil Nadu's delta districts, where the window for timely sowing is narrowing with each passing day.
Point of View
Regardless of storage imperatives. Tamil Nadu's delta districts are approaching a critical cultivation window, and each deferred CWRC decision effectively transfers the cost of the impasse onto farmers and agricultural labourers who have no institutional recourse. The political noise from the AIADMK is predictable, but the underlying data — a 21 tmc ft deficit with Mettur at 63% capacity — demands more than another review date. The CWMA's Wednesday meeting will reveal whether the authority has the institutional will to move beyond hearing submissions and actually enforce compliance.
NationPress
21 Jul 2026
Frequently Asked Questions
Why is the CWMA meeting on 22 July significant?
The CWMA meeting on 22 July is significant because Tamil Nadu has reported a deficit of nearly 21 tmc ft in Cauvery water receipts for the current water year, with delta farmers facing disrupted irrigation. It follows a CWRC meeting that deferred a decision, making the CWMA session a critical escalation point in the inter-state water dispute.
How much Cauvery water has Tamil Nadu received so far this season?
As of 19 July, Tamil Nadu had received only around 3.44 tmc ft of water at the Biligundulu measuring point since 1 June, leaving it with a shortfall of nearly 21 tmc ft against its due share under the Cauvery water-sharing arrangement.
What is the current water level at Mettur dam?
As of Tuesday morning, Mettur dam's water level stood at 75.14 feet against its full reservoir level of 120 feet, with storage at approximately 37.3 tmc ft out of a total capacity of 93.47 tmc ft. Mettur is the primary irrigation source for the Cauvery delta region.
What has Karnataka released from its Cauvery reservoirs?
According to data from the Karnataka State Natural Disaster Monitoring Centre, the four major Cauvery basin reservoirs in Karnataka recorded cumulative inflows of 31.61 tmc ft but a combined outflow of only 5.26 tmc ft as of Monday. The reservoirs held about 59 tmc ft against a total capacity of 114.57 tmc ft.
What is the AIADMK's criticism of the Tamil Nadu government?
AIADMK General Secretary Edappadi K. Palaniswami alleged that Chief Minister C. Joseph Vijay had failed to effectively engage with Karnataka Chief Minister D.K. Shivakumar to press for water releases, and that the TVK-led government had not adequately secured Tamil Nadu's rightful share. He urged the state government to intensify pressure on Karnataka immediately.
