On February 16 this year, the Supreme Court tweaked the 2007 verdict of the Cauvery Water Disputes Tribunal (set up in 1990) and increased Karnataka’s share at Tamil Nadu’s expense. The court also directed the Centre to formulate a scheme for apportioning water between Karnataka, Tamil Nadu, Kerala and Puducherry but the Narendra Modi government sought a three-month extension, citing the Assembly elections as the reason. If and when it comes to the crunch, the political belief is that the BJP will likely tilt towards Karnataka, where its political investments far exceed those in Tamil Nadu.
The 765-km-long Cauvery originates in Karnataka’s Kodagu district and flows through Hassan, Mandya and Mysore in the Old Mysuru region before entering Tamil Nadu. Old Mysuru has the lion’s share of 65 Assembly seats (out of the 224) and has traditionally seen a direct fight between the Congress and the Janata Dal (Secular). The BJP just about exists in 10 seats.