The Environment Agency has published new report on water temperature projections for England’s rivers.

According to the report, the average water temperature of the warmest summer month is projected to rise by about 0.6°C each decade. The projections indicate that adult brown trout will be under threat from high summer water temperatures at almost all sites by 2080 as their upper growth and feeding temperature range of 19.5°C could be exceeded.  Salmonid eggs survive best at winter temperatures below 12°C. This threshold could be exceeded at over 70% of sites by 2080.

Photo credit: Mael Balland

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