Judge Orders Changes to Columbia and Snake River Dam Operations to Help 'Disappearing' Salmon

The ruling aims to boost protections for migrating salmon impacted by dams in the Pacific Northwest.

Published on Feb. 26, 2026

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A federal judge in Oregon has ordered narrow changes to hydropower dam operations on the Columbia and Snake rivers in order to help struggling salmon populations. The ruling comes after decades of legal efforts by states, tribes, and conservation groups to ensure better protections for migrating salmon, which are killed in large numbers by the dams. The judge lamented the 'disappointing history of government avoidance' in addressing the issue and said the iconic salmon are 'disappearing from the landscape'.

Why it matters

The Columbia River Basin was once the world's greatest salmon-producing river system, but today many salmon and steelhead populations are endangered or threatened. The dams have severely impacted salmon migration and survival, threatening the cultural and economic livelihoods of regional Native American tribes who rely on the salmon.

The details

The judge ordered that reservoir levels behind the dams remain at the same level as last year and maintained the status quo on spill levels, which the plaintiffs argued can help fish travel through the dams faster. The federal government had sought higher reservoir levels, which the judge said would have 'devastating consequences for salmon'. The ruling applies to eight major dams on the Columbia and Snake rivers.

  • The ruling was issued by a federal judge in Oregon late on Wednesday, February 25, 2026.
  • In 2023, the Biden administration had promised a $1 billion deal over 10 years to help restore salmon while boosting tribal clean energy projects, but the Trump administration later torpedoed that agreement.

The players

Michael Simon

A U.S. District Judge in Oregon who issued the ruling ordering changes to dam operations.

Earthjustice

An environmental law firm representing the plaintiffs in the case.

Bonneville Power Administration

The agency that markets electricity from the dams on the Columbia and Snake rivers.

Inland Ports and Navigation Group

An organization that opposes the injunction, arguing increased spill to benefit fish can hinder navigation and disrupt commerce.

Nez Perce Tribe and Yakama Nation

Native American tribes that filed as 'friends of the court' in support of the plaintiffs' motion.

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What’s next

The judge's order maintains the status quo on dam operations, but the long-running legal battle over salmon protections is likely to continue. The Biden administration's 2023 deal to invest $1 billion in salmon restoration and tribal clean energy projects could be revisited, depending on the outcome of the ongoing litigation.

The takeaway

This case highlights the ongoing tensions between hydropower, navigation, and environmental protection in the Pacific Northwest, as well as the cultural and economic importance of salmon to regional Native American tribes. The judge's ruling underscores the need for a comprehensive, long-term solution that balances these competing interests and ensures the survival of this iconic species.