Old Hay Brook
It is formed from the Redcar Brook, Blacka Dike and another stream, which rise on moors to the south of Sheffield, and is joined by Needham's Dyke near Totley Grange.Water from the river was used to power mills processing lead, corn and paper from at least the 17th century, which were later used for grinding scythes as the Sheffield metal industry expanded.The river rises as a series of streams on a gritstone ridge some 6 or 7 miles (10 or 11 km) to the south-west of central Sheffield.The combined stream runs to the south of the Totley Brook estate, and then crosses over the tunnel entrance cutting in an aqueduct.[2] The channel is heavily engineered near the railway, passing over a series of stepped weirs, constructed of bricks, on either side of the aqueduct.