Inter-State Water Disputes

Story hook

It is 5 September 2016 in Bengaluru. At 9 PM, the Supreme Court orders Karnataka to release 15,000 cusecs of water from the Cauvery to Tamil Nadu for 10 days. By midnight, Bengaluru is burning. Trucks with TN registration are set ablaze. Schools shut. Section 144 imposed across the city. Three days later, the SC modifies its order to 12,000 cusecs. By 12 September, the protests have spread to Mysuru, Mandya, and Hassan. One person dies, hundreds injured.

The trigger? An order by the Cauvery Water Disputes Tribunal issued in February 2007 that had finally arrived in Karnataka's south fields. The water dispute had begun in 1892 between the Madras Presidency and Mysore. A century later, in 1990, Article 262 and the Inter-State Water Disputes Act 1956 were invoked to set up the Cauvery Tribunal. Sixteen years of hearings produced a final award in 2007. Karnataka challenged it. In February 2018, after eleven more years, the Supreme Court delivered its final verdict — slightly reducing Karnataka's allocation.

That is 126 years of one dispute. And Cauvery is not the longest. The Krishna dispute has been litigated since 1969 — 56 years. Godavari since 1969. Ravi-Beas since 1986. Mullaperiyar is a 100-year saga of a dam built by a colonial irrigation officer. Inter-state water is where Indian federalism reveals its slowest, most painful muscle.

Why this matters for UPSC

Water disputes appear in Prelims 1-2 times a year (Article 262, tribunal compositions, the contentious river pairs). They are a Mains GS-II + GS-I (geography) hybrid — examined for federalism, Constitution, agrarian distress, and basin geography. Interview boards routinely ask about Cauvery (in TN/Karnataka regional boards) and Mahadayi (in Goa/Karnataka context). The Inter-State River Water Disputes (Amendment) Bill 2019 (pending) is in current affairs.