State of Montana v. State of Wyoming and State of North Dakota
577 U.S. 423 · Decided March 21, 2016 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
State of Montana v. State of Wyoming and State of North Dakota was decided on March 21, 2016 unanimously (8–0). The Court vacated the lower court's decision and remanded the case. SCDB classifies its main issue as “Non-real property dispute between states” in the Interstate Relations area.
Read the opinion
Case details
- Citations
- 577 U.S. 423 · 136 S. Ct. 1034 · 194 L. Ed. 2d 207 · 2016 U.S. LEXIS 2131
- Docket number
- No. 137, Orig.
- Decided
- March 21, 2016
- Court era
- Roberts Court
- Decision type
- Decree
- Disposition
- Vacated and remanded
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 8–0 (unanimous)
- Opinion assigned by
- John G. Roberts Jr.
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Non-real property dispute between states
- Issue area
- Interstate Relations
- Type of law
- No legal provision
- Decision direction (SCDB)
- Unspecifiable what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Anthony M. Kennedy | Majority | |
| Justice Clarence Thomas | Majority | |
| Justice Ruth Bader Ginsburg | Majority | |
| Justice Stephen G. Breyer | Majority | |
| Chief Justice John G. Roberts Jr. | Majority | |
| Justice Samuel A. Alito Jr. | Majority | |
| Justice Sonia Sotomayor | Majority | |
| Justice Elena Kagan | Majority |
Full case caption
State of Montana v. State of Wyoming and State of North Dakota
SCDB identifiers: case 2015-073, docket 2015-073-01.
Related decisions
Other cases on “Non-real property dispute between states”
- Florida v. Georgia
- Texas v. New Mexico
- State of Montana v. State of Wyoming and State of North Dakota
- Florida v. Georgia
- State of South Carolina v. State of North Carolina
- Delaware v. Pennsylvania and Wisconsin
Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error