04/05/2011 03:19 PM
As part of the initiative by the Environment Agency and the Tyne Rivers Trust, over 1.3 kilometres of fencing has gone up on the river in County Durham to protect its banks.
The fencing will stop livestock damaging the river banks, causing them to erode.
Erosion causes high levels of sediment in the water, affecting its quality.
"The fencing along the river banks will help to stabilise the erosion and reduce the amount of sediment in the river, which will help boost the numbers of wild brown trout and grayling," said Gareth Pedley, Environment Agency fisheries technical officer.
"This is one of a number of steps we are taking throughout the year to improve the Derwent for both fish and for people."
The River Derwent is 66 miles long and is a tributary of the River Trent.