Debdale Lock And Associated Weir, And Cave

Debdale Lock and Associated Weir, and Cave

This is a group of canal structures at Debdale forming part of the Staffordshire and Worcestershire Canal, which opened to traffic in 1772 and was designed by James Brindley (1716–72).

The lock is a narrow lock built to Brindley's design around 1770. The lock chamber is rock-cut and brick-faced with a replacement engineering brick coping. The eastern (upper) wooden gate has a timber balance beam and ground paddle gears. The western (lower) end is denoted by a pair of wooden lock gates with gate paddles and timber balance beams. The rock cliff face adjacent to both lock gates has been roughly quarried to accommodate the moving balance beams. The surfaces adjacent to the balance beams are of modern brick, but original sandstone surfaces may survive below. A small upright pillar situated a short distance to the south of the lock may be a mile post or bollard, with rubbing marks formed by ropes visible on its surface.

The circular weir was also built to Brindley's design around 1770 and serves as an overflow device for ensuring the canal water levels remain stable. It is surrounded by a nearly circular brick wall with half-round coping, probably added in the 19th century. This wall surrounds an overflow channel leading underground from the canal. Water from the channel cascades over a low brick-built wall and two overspills into a central plunge hole which is covered by a modern protective metal cage.

An artificial cave was cut into the north-facing sandstone cliff adjacent to Debdale Lock around 1770. Access is provided by a round-arched doorway which retains a rock-cut door frame slot. The interior measures approximately 9 metres long by 3 metres wide with a roof up to 2.5 metres high. A stone-cut bench leads around the entire edge of the cave, rising up to 0.5 metres high. The cave walls retain tool marks formed during the rough dressing of its surface.

The Staffordshire and Worcestershire Canal was designed by one of the most prominent 18th-century canal engineers, James Brindley, and was fully opened to traffic in May 1772. It formed part of a grand scheme to link Hull, Liverpool and Bristol by connecting the Rivers Mersey, Trent and Severn. The canal is 75 kilometres long, has 43 locks and runs from Great Heywood, where it meets the Trent and Mersey Canal, to Stourport, where it joins the River Severn. The canal was a commercial success and remained in active use until the closure of the Stourport power station in 1949. In 1963 the canal was classified under the Transport Act as a cruiseway and remains a popular recreational resource.

A footbridge of around 1772 to a design by James Brindley, with brick and sandstone abutments, modern timber deck and parapet rails, is associated with the site but is not of special interest.