According to a study carried out by the central government in 1972, the usage of water from Kaveri in Tamil Nadu was 489 tmc and Karnataka's consumption was 277 tmc. With the increase in the population, Karnataka wishes to increase its utilization to 465 tmc.
The Kaveri Tribunal, in its interim award of June 1991, ordered that Karnataka should release 205 TMC of water to Tamil Nadu during one "water year" from June to May. It also registered a monthly quota for flow. The Tribunal which had been looking into the issue for around 16 years finally was relieved with the verdict on 5th of February 2007 of 270 TMC for Karnataka, 419 TMC for Tamil Nadu, 50 TMC for Kerala and 7 TMC for Pondichery, a judgment which both Karnataka and Tamil Nadu are supposed to challenge.
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