Atlantic Salmon Welfare in UK Rivers

Wild Atlantic salmon populations in UK rivers have declined dramatically. The welfare of individuals attempting to complete their breeding migration is threatened by barriers, predation and disease.

Key Facts

UK salmon rivers have seen declines of 70%+ in some catchments since the 1980s
Returning adults must navigate weirs, dams, pollution and agricultural abstractions
Sea lice from salmon farms transfer to wild fish swimming past coastal net-pen operations
Climate change is warming rivers above the thermal tolerance of salmon in summer
The UK Wild Salmon Policy provides guidance but enforcement has been inconsistent

Welfare Considerations

Wild salmon attempting to migrate are subjected to compounding stressors: barrier negotiation requiring large energy expenditure, elevated water temperatures that cause thermal stress, sea lice infestation that damages skin and causes osmotic disruption, and disease. Individually these are manageable; in combination they cause welfare harm and breeding failure. River restoration — removing unnecessary weirs, restoring riparian shading and reducing abstraction — directly reduces this cumulative welfare burden.

What You Can Do

Support Salmon and Trout Conservation UK river restoration campaigns
Advocate for mandatory sea lice management zones around salmon farms near wild migration routes
Choose salmon products from producers committed to wild fish welfare
Back Environment Agency investment in fish pass maintenance and river monitoring
Report pollution events in salmon rivers immediately to the Environment Agency hotline