No. 18-1584October Term 2019Decided Jun 15, 2020
United States Forest Service v. Cowpasture River Preservation Assn.
The Appalachian Trail's route through a national forest did not, by itself, block the Forest Service from issuing this pipeline crossing permit.
Case status
- Current stage
- Decided
- Latest event
- Decision released Jun 15, 2020
- What it's about
This case was about whether the U.S. Forest Service could allow the Atlantic Coast Pipeline to pass beneath the Appalachian Trail where the trail crosses national forest land in Virginia. The dispute turned on whether land crossed by the Appalachian Trail becomes part of the National Park System, which would block the pipeline right-of-way under the Mineral Leasing Act.
Question presented
Whether the Forest Service has authority to grant rights-of-way under the Mineral Leasing Act through lands traversed by the Appalachian Trail within national forests.
- Case path
United States Court of Appeals for the Fourth Circuit / Decision released Jun 15, 2020
- Area
Decided Supreme Court case
Briefing
What it's about
The Supreme Court said the Forest Service could grant a pipeline right-of-way beneath the Appalachian Trail where the trail crosses national forest land in Virginia. The justices concluded that the trail's presence did not by itself turn that land into National Park System land for this purpose.
Impact
The decision mattered for the Atlantic Coast Pipeline and for other projects that need permission to cross federal land. It also clarified that a trail crossing does not automatically shift control away from the Forest Service.
What's next
The Supreme Court has finished this docket action. Any remaining issues would be handled in lower courts or by federal agencies under the Court's reading of the Mineral Leasing Act.
Why did the Appalachian Trail matter in this pipeline case?
Opponents said land under the trail became National Park System land, which would bar a right-of-way under the Mineral Leasing Act. The Court disagreed.
Who is affected by the Court's answer?
Federal land managers, pipeline companies, and environmental groups are directly affected. For example, projects crossing national forest land under the trail may still seek federal permission.
What happened after the Supreme Court's decision?
The Court finished this docket action. Any remaining disputes returned to lower courts or agencies, using the Supreme Court's reading of the law.
Decision
What the Court decided
The Appalachian Trail's route through a national forest did not, by itself, block the Forest Service from issuing this pipeline crossing permit.
Impact
The decision mattered for the Atlantic Coast Pipeline and for other projects that need permission to cross federal land. It also clarified that a trail crossing does not automatically shift control away from the Forest Service.
Not official Court text.
Opinion documents
Related cases




Grounding
- Grounding
- Primary materials plus reporting.
- Note
- Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.
- Checked
- Jul 2, 2026
- Method
- Methodology
Primary materials10
Supreme Court docket 18-1584
docket | Jul 3, 2026
Primary case document
Supreme Court document | Jul 3, 2026
CourtListener docket record
docket | Jul 3, 2026
Questions Presented
brief | May 25, 2026
opinion
opinion | Jun 15, 2020
Petition
brief | Jun 25, 2019
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026
SupremeCourt.gov
official | Jul 2, 2026