was marked on maps of the late 19th century. By 1938 the last mill was no longer in use and was demolished in the 1960s. The mill pond has become silted as a result of the poor condition of the dam and sluice, but could form a central part of a conservation area based on Apsley Grange, a large building on the opposite side of the road. Below the mill site, a small brick building once held the pumps used to regulate water levels in the river and pump water to Langwith Colliery. Next the river passes through an arch of a two-arched viaduct built in the 1870s by the Midland Railway. Although passenger traffic ceased in 1964, as part of the Beeching cuts, the line remained open for goods trains, and became part of the Robin Hood Line from Worksop to Nottingham in 1998. The other arch crosses the Whaley Thorns road, under which the river flows immediately afterwards. Passing through Langwith, the river splits into two channels which pass either side of some houses and rejoin at an open space where a stone sign indicates it the site of a sheep dip in 1896. The first of a series of lakes, "The Lake", covering an area of , lies to the east of Nether Langwith, beyond which the flow is augmented by the treated output from Langwith Sewage Treatment Works. Langwith Mill House marks the location of a cotton mill built in 1786. It had four storeys and was one of the largest of its type in the region. It closed in 1848 and was used as a corn mill from 1886. The building is in a poor state of repair, and on the Buildings at Risk Register. The mill house is a Grade II Listed building, and housed a restaurant for a time, but is now empty. Soon the river splits, the northern channel dropping down, while the southern artificial channel maintains its level as it supplied the first of two mills at Cuckney. There have been mills here for several centuries, for a cotton mill was destroyed by fire in 1792. A lake called Cuckney Dam, covering , provided the water to power its replacement, which ceased operation on 12 July 1844. After the machinery had been removed, the Duke of Portland turned the building into a National School. The mill is now part of Cuckney