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Event

The Dakota Access Pipeline easement case

The Standing Rock Sioux Tribe's suit over the Army Corps' easement for the Dakota Access Pipeline under Lake Oahe, and the Corps' May 2026 decision granting the easement.

5 links, 4 backed by primary records

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Dates
2016–2026

Connections 5

involved

  • Standing Rock Sioux Tribe sued over the easement; Lake Oahe supplies water for drinking, industry and sacred cultural practices Primary record 1
  • U.S. Army Corps of Engineers issued the easement without an environmental impact statement; the court held that unlawful Primary record 1
  • Lake Oahe where the pipeline crosses Primary record 1

appears in

Timeline 1 date
  1. 2016–2026 The Dakota Access Pipeline easement case
Proof 3 sources
  1. Standing Rock Sioux Tribe v. U.S. Army Corps of Engineers, No. 20-5197 (D.C. Cir. 26 January 2021), U.S. Court of Appeals for the D.C. Circuit, 26 Jan 2021. Primary record
    provides several successor tribes of the Great Sioux Nation with water for drinking, industry, and sacred cultural practices
    Under the Mineral Leasing Act, 30 U.S.C. § 185, the pipeline could not traverse the federally owned land at the Oahe crossing site without an easement from the Corps.
    Passing beneath Lake Oahe’s waters, the Dakota Access Pipeline transports crude oil from North Dakota to Illinois.
    We agree with the district court that the Corps acted unlawfully, and we affirm the court’s order vacating the easement while the Corps prepares an environmental impact statement.
  2. US Finalizes Easement for Dakota Access Crude Oil Pipeline, Insurance Journal, 22 May 2026. Scholarship & press
    The US Army Corps of Engineers finalized an easement for a stretch of the Dakota Access pipeline that passes under a North Dakota lake, ending a years-long environmental review of the hotly contested oil conduit.
    Thursday’s result includes additional conditions including enhanced leak detection and monitoring requirements
  3. Final environmental impact statement for DAPL easement shows remote chance of leak under Lake Oahe, KFYR-TV, 19 Dec 2025. Scholarship & press
    Final environmental impact statement for DAPL easement shows ‘remote’ chance of leak under Lake Oahe
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