Colorado v. New Mexico
467 U.S. 310 · Decided June 4, 1984 · 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
Colorado v. New Mexico was decided on June 4, 1984 by a vote of 8–1. Justice Sandra Day O'Connor wrote the opinion of the Court. SCDB classifies its main issue as “Non-real property dispute between states” in the Interstate Relations area.
Read the opinion
Case details
- Citations
- 467 U.S. 310 · 104 S. Ct. 2433 · 81 L. Ed. 2d 247 · 1984 U.S. LEXIS 9
- Docket number
- 80 ORIG
- Decided
- June 4, 1984
- Argued
- January 9, 1984
- Court era
- Burger Court
- Decision type
- Opinion of the Court (orally argued)
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 8–1
- Majority opinion
- Sandra Day O'Connor
- Opinion assigned by
- Warren E. Burger
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Non-real property dispute between states
- Issue area
- Interstate Relations
- Decision direction (SCDB)
- Unspecifiable what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice William J. Brennan Jr. | Majority | |
| Justice Byron R. White | Majority | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Majority | |
| Justice Harry A. Blackmun | Majority | |
| Justice Lewis F. Powell Jr. | Majority | |
| Justice William H. Rehnquist | Majority | |
| Justice John Paul Stevens | Dissent | Wrote an opinion |
| Justice Sandra Day O'Connor | Majority | Wrote an opinion |
Full case caption
Colorado v. New Mexico et al.
SCDB identifiers: case 1983-112, docket 1983-112-01.
Related decisions
Other cases on “Non-real property dispute between states”
- State of Arizona v. State of California
- Idaho ex Rel. Evans v. Oregon
- Colorado v. New Mexico
- Maryland v. Louisiana
- Texas v. New Mexico
- Wisconsin v. Illinois
Same Term, same area (Interstate Relations)
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