Wild Salmon Welfare in River Restoration Programs

River restoration projects benefit wild salmon populations and the welfare of individual fish. Understanding the welfare gains from habitat restoration supports evidence-based conservation.

Key Facts

Atlantic salmon populations have declined by 75% in 25 years across their range due to habitat loss and climate change
Migratory barriers including weirs and dams prevent salmon reaching spawning grounds, causing reproductive failure
Wild salmon swimming upstream to spawn navigate significant physical challenges including temperature stress and predation
River restoration removing weirs can immediately increase salmon migration success by over 50%
In-river aquaculture and pollution cause disease pressure that affects both wild and farmed salmon welfare
Restored rivers with appropriate shading, flow, and gravel beds support significantly higher salmon population density

Welfare Considerations

Wild salmon welfare in the context of river restoration is rarely framed in welfare terms but is genuinely relevant. Fish sentience recognition is growing, and the physical challenges faced by migratory salmon — dam barriers, elevated water temperatures, and predator gauntlets — represent genuine welfare burdens. Restoration that enables salmon to migrate freely, find appropriate spawning habitat, and complete their lifecycle without extreme physiological stress reduces individual welfare harm at the same time as achieving conservation goals. River restoration is therefore simultaneously a conservation and animal welfare intervention.

What You Can Do

Support river restoration charities including the Atlantic Salmon Trust and similar national organizations
Advocate for weir removal and fish pass installation on barriers in salmon rivers
Choose sustainably sourced fish products that do not contribute to river habitat degradation
Participate in citizen science river health monitoring programs that track salmon populations
Support riparian tree planting programs that shade rivers and reduce water temperatures for cold-water salmonids
Reduce water pollution by avoiding pesticide and fertilizer run-off from any land you manage