Under Article 262 of the Indian Constitution, the adjudication of disputes relating to the water of inter-state rivers or river valleys is done.

Explanation:

In the event of a dispute over waters, Article 262 states:

• Any disagreement or complaint about the usage, distribution, or control of the waters of, or in, any inter-State river or river valley may be adjudicated by Parliament by law.
• Regardless of the provisions of this Constitution, Parliament may pass legislation stating that neither the Supreme Court nor any other court has jurisdiction over any dispute or complaint referred to in Clause(1).