After passing under Blackstock Road, it is joined by another stream, which rises in Buck Wood, Newfield Green, and flows in a south-westerly direction.A series of streams rise in Leeshall Wood, and combine before joining Meers Brook near the Rollestone recycling centre.The scheme was planned by the city engineer, H Foster, and was designed to reduce flooding of homes in Heeley and Meersbrook, and to carry additional water away from new housing in the Gleadless Valley.The culvert was about 0.75 miles (1.2 km) long, and although it broadly followed the existing line of the river, the bends were ironed out where possible, providing a much straighter course.Like many rivers in the UK, the chemical status changed from good to fail in 2019, due to the presence of polybrominated diphenyl ethers (PBDE), perfluorooctane sulphonate (PFOS) and mercury compounds, none of which had previously been included in the assessment.