January 16, 2025 — The U.S. Army Corps of Engineers said it could make hydroelectric dams on Oregon’s Willamette River safe for endangered salmon by building gigantic mechanical traps and hauling baby fish downstream in tanker trucks. The Corps started pressing forward over objections from fish advocates and power users who said the plan was costly and untested.
That was until this month, when President Joe Biden signed legislation ordering the Corps to put its plans on hold and consider a simpler solution: Stop using the dams for electricity.
The new law, finalized on Jan. 4, follows reporting from Oregon Public Broadcasting and ProPublica in 2023 that underscored risks and costs associated with the Corps’ plan. The agency is projected to lose $700 million over 30 years generating hydropower, and a scientific review found that the type of fixes the Corps is proposing would not stop the extinction of threatened salmon.
The mandate says the Corps needs to shelve designs for its fish collectors — essentially massive floating vacuums expected to cost $170 million to $450 million each — until it finishes studying what the river system would look like without hydropower. The Corps must then include that scenario in its long-term designs for the river.