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Cauvery Water Crisis: Karnataka Releases Only 30% of Required Flow — CM Vijay to Write to Centre

Tamil Nadu's Cauvery water shortfall from Karnataka deepens as releases remain significantly below the Cauvery Water Management Authority's mandated quantity — CM Vijay confirms letter to Centre while delta farmers face second consecutive season of reduced cultivation.

17 August 2026VizhiTN Editorial Team7 min read

Why this matters to Tamil Nadu

The Cauvery water crisis directly determines whether millions of Tamil Nadu delta farmers can cultivate their land this season. For families whose livelihoods depend entirely on paddy cultivation, a reduced cultivation season means reduced income, greater debt, and potential inability to repay crop loans. The Cauvery issue is also constitutionally significant — it tests whether India's interstate water sharing framework can actually enforce its decisions when upstream states face political pressure from their own farming constituencies.

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Key Highlights

Essential facts and key takeaways

7 points
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Karnataka releasing approximately 30% of mandated Cauvery water flow to Tamil Nadu as of August 2026.
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Kuruvai season already affected; Samba season cultivation at risk if releases don't improve.
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Affected districts: Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Pudukottai, parts of Trichy and Cuddalore.
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CM Vijay confirmed formal letter to Centre and CWMA demanding enforcement of mandated releases.
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Both DMK and AIADMK have criticised TVK government's pace of response.
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Cauvery Water Management Authority constituted in 2018 to oversee award implementation.
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Paddy MSP hike to ₹2,750/quintal provides no benefit to farmers who cannot cultivate for lack of water.

Timeline

Chronological developments

5 events
1
2007: Cauvery Water Disputes Tribunal issues final award allocating water quantities to each state.
2007: Cauvery Water Disputes Tribunal issues final award allocating water quantities to each state.
2
2018: Cauvery Water Management Authority constituted to oversee award implementation.
2018: Cauvery Water Management Authority constituted to oversee award implementation.
3
June–July 2026: Karnataka releases critically below mandated levels; Kuruvai season affected.
June–July 2026: Karnataka releases critically below mandated levels; Kuruvai season affected.
4
July 24, 2026: DMK and AIADMK both urge CM Vijay to act more forcefully on Cauvery shortfall.
July 24, 2026: DMK and AIADMK both urge CM Vijay to act more forcefully on Cauvery shortfall.
5
August 2026: CM Vijay confirms formal letter to Centre and CWMA on mandated release enforcement.
August 2026: CM Vijay confirms formal letter to Centre and CWMA on mandated release enforcement.

Official Sources

Verified links & documentation

Cauvery Water Management AuthorityGovernment of Tamil Nadu

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