Kansas v. Nebraska and Colorado
574 U.S. 445 · Decided February 24, 2015 · 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
Kansas v. Nebraska and Colorado was decided on February 24, 2015 by a vote of 6–3. Justice Elena Kagan wrote the opinion of the Court. SCDB classifies its main issue as “Miscellaneous interstate conflict” in the Interstate Relations area.
Read the opinion
Case details
- Citations
- 574 U.S. 445 · 135 S. Ct. 1042 · 191 L. Ed. 2d 1 · 2015 U.S. LEXIS 1501
- Docket number
- 126, ORIG.
- Decided
- February 24, 2015
- Argued
- October 14, 2014
- Court era
- Roberts Court
- Decision type
- Opinion of the Court (orally argued)
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 6–3
- Majority opinion
- Elena Kagan
- Opinion assigned by
- John G. Roberts Jr.
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Miscellaneous interstate conflict
- Issue area
- Interstate Relations
- Legal provision
- Republican River Compact
- Type of law
- Infrequently litigated statute
- Decision direction (SCDB)
- Unspecifiable what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Antonin Scalia | Dissent | Wrote an opinion |
| Justice Anthony M. Kennedy | Majority | |
| Justice Clarence Thomas | Dissent | Wrote an opinion |
| Justice Ruth Bader Ginsburg | Majority | |
| Justice Stephen G. Breyer | Majority | |
| Chief Justice John G. Roberts Jr. | Special concurrence | Wrote an opinion |
| Justice Samuel A. Alito Jr. | Dissent | |
| Justice Sonia Sotomayor | Majority | |
| Justice Elena Kagan | Majority | Wrote an opinion |
Full case caption
Kansas v. Nebraska and Colorado
SCDB identifiers: case 2014-007, docket 2014-007-01.
Related decisions
Other cases on “Miscellaneous interstate conflict”
- Montana v. Wyoming
- Texas v. New Mexico and Colorado
- Mississippi v. Tennessee
- New York v. New Jersey
- Texas v. New Mexico and Colorado
- Franchise Tax Board of California v. Gilbert P. Hyatt
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