Final answer:
The resolution of water rights disputes between two states typically falls under the jurisdiction of the court system, with the Supreme Court being involved in some cases.
Step-by-step explanation:
In the case of two states arguing over water rights, the resolution of the issue typically falls under the jurisdiction of the court system. The legal basis for resolving such disputes can vary depending on the specific circumstances and agreements between the states involved. In some cases, the Supreme Court may be called upon to make a final decision, while in others, lower courts or specialized water tribunals may be responsible for resolving the issue.