Wild Animals

Wild Salmon and Dam Removal for Fish Welfare

Dam removal is emerging as one of the most effective interventions for restoring wild fish populations and improving the welfare of migratory species like salmon.

Key Facts

Over 1,600 dams have been removed in the United States since the 1970s
Wild salmon populations on rivers with removed dams recover significantly within 5-10 years
Dams block migratory routes, creating physical barriers that prevent breeding access
Fish ladders are partially effective but increase energy expenditure and mortality for migrating fish
The Elwha River restoration after dam removal in 2012-2014 is considered the most successful such project

Welfare Considerations

The welfare of migratory fish is intimately connected to the integrity of their migration routes. Dams create chronic welfare impacts by blocking access to spawning habitat, altering water temperatures, and trapping fish in unsuitable conditions. Dam removal addresses these welfare harms at a population scale. The welfare benefits of successful dam removal extend to entire river ecosystems, benefiting thousands of interconnected species.

What You Can Do

Support dam removal advocacy organizations working to restore river connectivity
Oppose new dam construction in salmon-bearing rivers without comprehensive welfare impact assessments
Advocate for improved fish ladder design and monitoring on remaining dams
Support local wild salmon recovery programs through donations and volunteering
Choose wild-caught or responsibly farmed salmon from rivers without severe blocking infrastructure