Nearby are two mill ponds left over from industrial activity in the vale. The ponds were fed from the river above a weir (destroyed in floods in the 1960s, all that remains is the sluice gate) on the upstream side of the viaduct, and provided both power and processing water to Reddish Vale Print Works, a calico printing works dating from before 1800. The works had ceased printing by 1975, and have now been demolished and the land turned into a butterfly park. The ponds are now used for angling, and attract herons and a variety of ducks. Most of the race has been filled in, but a short length carries Denton Brook down to the river. Denton Brook (and a small tributary) marks the traditional boundary between Reddish and Denton. The manorial corn mill (one of several to be known as Reddish Mill) was sited over the brook and was demolished in about 1860 when the ponds were extended.