Brown trout will soon be able to reach important spawning grounds upstream from the River Don thanks to the removal of a weir near Oughtibridge.
The weir, which dates back to at least the 1960s, will be taken out by Swedish firm SCA, which owns the site at Ewden Beck.
The Environment Agency has been working with Oughtibridge Mill for a decade and began working with SCA when it took over the paper mill in 2012.
Jerome Masters fisheries technical officer at the Environment Agency, said: “We are pleased to be working with SCA on the removal of the weir. This will help to reverse the long-term impacts of industry on this part of the river.
“The work being carried out here will immediately benefit the River Don’s popular trout fishery. We also expect bullhead to be able to move upstream. We haven’t caught this small fish species above the weir in any of our surveys over the last ten years.”
Paul Oliver, SCA programme manager added: “We are working closely with the Environment Agency on this important work to improve the ecology of Ewden Beck.”
The work is due to be carried out this month.