Reported / Citable
Background
Downstream water-right holders alleged that activities in Great Basin National Park reduced flows in the Baker-Lehman Creeks and impaired rights fixed by a 1934 Nevada decree. They sued federal officials to enforce and administer those decreed rights.
The district court dismissed for lack of jurisdiction, concluding that the United States retained sovereign immunity. The landowners invoked the McCarran Amendment, which waives federal immunity in suits adjudicating or administering rights to a river system or other water source.
The Court’s Holding
A divided Ninth Circuit panel reversed. The majority held that the 1934 adjudication comprehensively determined the relative rights to the creek system and that the present suit seeks administration of those established rights.
Although enacted in 1952, the McCarran Amendment applies to administration of previously acquired water rights. The waiver therefore allowed the suit against the United States to proceed. The court did not decide whether the park’s conduct actually violated the decree.
Key Takeaways
- The McCarran Amendment reaches administration of rights established in an older comprehensive decree.
- A suit enforcing decreed water allocations may proceed against the United States despite sovereign immunity.
- The key inquiries are whether the original adjudication was comprehensive and whether the new action administers those rights.
- The ruling resolves jurisdiction only; the merits remain for the district court.
Why It Matters
Western water-right holders may invoke historic comprehensive decrees against federal land managers when later conduct allegedly changes decreed flows. The decision is especially important where federal ownership or management would otherwise create a sovereign-immunity barrier.