Fish must migrate through our streams and rivers to reach the habitats they need for different parts of their life cycle. Salmon and eel move vast distances while other species move more locally.
With over a thousand weirs in the Trent catchment, including several major ones weirs along the Trent itself, fish cannot move freely and their populations are smaller and fragmented and so more at risk as a result.
Removing weirs is not always possible, but if it can be achieved, it restores the river’s natural gradient and uncovers habitats hidden by ponded water and silt. Where weirs cannot be removed or breached, we look at the possibility of building fish passes, such as this one at Darley Abbey, constructed by TRT in 2013.