Background
After the Snake River Basin Adjudication confirmed thousands of federal stockwater rights on federal land, Idaho enacted a series of “stockwater amendments.” The United States sued Idaho, the Idaho Department of Water Resources, and the department’s director, contending that several provisions improperly targeted and threatened its decreed rights. The Idaho Legislature and private ranching interests intervened as defendants.
The district court rejected jurisdictional objections based on prior exclusive jurisdiction and Burford abstention. On the merits, it held that Idaho Code § 42-224 was constitutional as applied to the United States but that § 42-113(2)(b) was facially unconstitutional under the Supremacy Clause. The United States appealed the § 42-224 ruling, while Idaho and the intervenors cross-appealed the jurisdictional rulings and the judgment concerning § 42-113(2)(b).
The Court’s Holding
The Ninth Circuit affirmed the district court’s exercise of jurisdiction. The prior-exclusive-jurisdiction doctrine did not apply because the federal action challenged the constitutionality of Idaho statutes rather than asserting or relitigating interests in particular water rights, so it was not an in rem proceeding. Burford abstention was also unavailable because the suit presented federal constitutional questions, did not challenge an Idaho agency’s determination of water rights, and did not require resolution of complex state-law disputes within the state courts’ special competence.
The panel reversed the ruling on § 42-224 and held the provision unconstitutional as applied to the United States. Although much of the forfeiture procedure appeared facially neutral, the court read it within the broader statutory scheme and concluded that it discriminated against the federal government by jeopardizing its adjudicated stockwater rights and subjecting them to burdensome collateral attacks. The panel did not reach the United States’ alternative challenges to that provision.
The panel also affirmed that § 42-113(2)(b) is facially unconstitutional. The provision altered appurtenance rules only for stockwater rights associated with federally owned or managed land and created a mechanism by which grazing permittees could divest the United States of its rights. That discrimination against the federal government violated the Supremacy Clause.
Key Takeaways
- A constitutional challenge to Idaho’s stockwater statutes was not an in rem water-rights proceeding, so the prior-exclusive-jurisdiction doctrine did not bar federal jurisdiction.
- Burford abstention was unavailable because the dispute centered on federal constitutional questions rather than an agency determination or an inseparable issue of complex state water law.
- Idaho Code § 42-224 was unconstitutional as applied to the United States, while § 42-113(2)(b) was facially invalid, because the provisions discriminated against the federal government in violation of the Supremacy Clause.
Why It Matters
The decision prevents Idaho from using the challenged stockwater provisions to single out federal rights for unfavorable treatment after those rights were confirmed in the Snake River Basin Adjudication. It also makes clear that federal courts may hear constitutional challenges to state water legislation when adjudicating those claims does not require them to assume control over particular water rights.