Where did Karnataka fail in its struggle for Mahadayi?

As per the law, for any huge project, the government should take prior permission from its competent authority. But Karnataka government started the work of the Kalasa Banduri project without prior environmental clearance. 

Earlier, the Karnataka government had given in writing to the tribunal saying that it will start the work only after the permission from the Environment Department. But it did not keep its promise and started the work of the project.

The advocates of the government failed to convince the tribunal that 7 TMC water is being wasted in the sea.

The advocates failed to assert that there is sufficient water in three notified places from where the government intends to get water.

Finally, the Tribunal instructed the advocates of Karnataka to study the Potamology (Physical science of rivers) before claiming that the Mahadayi's waters are being wasted in the ocean.