Tamil Nadu Moves Supreme Court in Cauvery Water Row: What It Could Mean for Karnataka and Millions of UsersTamil Nadu has approached the Supreme Court over the Cauvery water dispute with Karnataka. Tamil NaduTamil Nadu has once again approached the Supreme Court over the long-running Cauvery water dispute, alleging that Karnataka has failed to release water as required under the existing framework. Why Has Tamil Nadu Approached the Supreme Court? It also wants to protect the farmers who depend on Cauvery water for their crops. The Bigger PictureThe Cauvery dispute is more than a legal disagreement between two neighbouring states.