Turton and Entwistle Reservoir
Encyclopedia
Turton and Entwistle Reservoir is a water reservoir in the town of Edgworth
, Lancashire
. The reservoir's existence is due to the Entwistle Dam. When constructed in 1832 the Entwistle Dam was the highest in Britain; it rises 108 feet from the base. The reservoir contains almost 750 thousand imperial gallons (roughly 3,400,000 litres) and, with the Wayoh Reservoir
just below, satisfies around 50% of Bolton
's need for drinking water.
Entwistle Dam was designed by Thomas Ashworth, a local land surveyor, overseen by Jesse Hartley, the Liverpool Docks engineer. Other works were by Joseph Jackson, an engineer and surveyor from Bolton. It was built for the Commissioners of the Turton and Entwistle
Reservoir, a group of local mill owners who obtained an enabling Act of Parliament in 1832 to regulate the supply of water in Bradshaw Brook for water power for the finishing textiles.
Records suggest it was built entirely of puddle clay with no distinct core. Earth dams usually have a waterproof cutoff under their earthworks designed to stop seepage under the dam but it is doubtful whether there was any such a cutoff at Entwistle. The reservoir has a rock-cut outlet tunnel driven through the valley side rather than a culvert or pipeline and a siphon draw-off pipe. The dam is 108 ft high and 110 metres long at the crest. The present overflow channel and valve tower were added by the Bolton Corporation Water Works who took over the reservoir in 1864.
Edgworth
Edgworth is a small village within the Blackburn with Darwen borough of Lancashire, England. It is north east of North Turton between Broadhead Brook on the west and Quarlton Brook in the south east...
, Lancashire
Lancashire
Lancashire is a non-metropolitan county of historic origin in the North West of England. It takes its name from the city of Lancaster, and is sometimes known as the County of Lancaster. Although Lancaster is still considered to be the county town, Lancashire County Council is based in Preston...
. The reservoir's existence is due to the Entwistle Dam. When constructed in 1832 the Entwistle Dam was the highest in Britain; it rises 108 feet from the base. The reservoir contains almost 750 thousand imperial gallons (roughly 3,400,000 litres) and, with the Wayoh Reservoir
Wayoh Reservoir
Wayoh Reservoir is a water reservoir in the town of Edgworth, Lancashire, England. It was completed on 28 April 1876 to supply water to Bolton. Wayoh, together with the Turton and Entwistle Reservoir, make up 50% of Bolton's drinking water....
just below, satisfies around 50% of Bolton
Bolton
Bolton is a town in Greater Manchester, in the North West of England. Close to the West Pennine Moors, it is north west of the city of Manchester. Bolton is surrounded by several smaller towns and villages which together form the Metropolitan Borough of Bolton, of which Bolton is the...
's need for drinking water.
Entwistle Dam was designed by Thomas Ashworth, a local land surveyor, overseen by Jesse Hartley, the Liverpool Docks engineer. Other works were by Joseph Jackson, an engineer and surveyor from Bolton. It was built for the Commissioners of the Turton and Entwistle
Entwistle, Lancashire
Entwistle is a village in the Blackburn with Darwen unitary authority in Lancashire in the north west of England.Its name derives from the Old English ened and twisla which means a river fork frequented by ducks. The name was recorded as Hennetwisel in 1212, Ennetwysel in 1276 and Entwissell in 1311...
Reservoir, a group of local mill owners who obtained an enabling Act of Parliament in 1832 to regulate the supply of water in Bradshaw Brook for water power for the finishing textiles.
Records suggest it was built entirely of puddle clay with no distinct core. Earth dams usually have a waterproof cutoff under their earthworks designed to stop seepage under the dam but it is doubtful whether there was any such a cutoff at Entwistle. The reservoir has a rock-cut outlet tunnel driven through the valley side rather than a culvert or pipeline and a siphon draw-off pipe. The dam is 108 ft high and 110 metres long at the crest. The present overflow channel and valve tower were added by the Bolton Corporation Water Works who took over the reservoir in 1864.