The Jumbles Reservoir is a heavily modified, high

alkalinity Alkalinity (from ) is the capacity of water to resist Freshwater acidification, acidification. It should not be confused with base (chemistry), basicity, which is an absolute measurement on the pH scale. Alkalinity is the strength of a buffer s ...

, shallow

reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...

North West England North West England is one of nine official regions of England and consists of the ceremonial counties of England, ceremonial counties of Cheshire, Cumbria, Greater Manchester, Lancashire and Merseyside. The North West had a population of 7,4 ...

. It lies in

Jumbles Country Park Jumbles Country Park is a country park in Bolton, Greater Manchester. It lies on the southern edge of the West Pennine Moors. It was opened on 11 March 1971 by Queen Elizabeth II. The park is now owned and managed by United Utilities United U ...

, in the valley of

Bradshaw Brook Bradshaw Brook is a river draining parts of Lancashire and Greater Manchester in Northern England. Starting life as Cadshaw Brook draining a valley named Green Lowe Clough on Turton Moor, the brook feeds the Turton and Entwistle Reservoir and W ...

, partly in the

Metropolitan Borough of Bolton The Metropolitan Borough of Bolton ( ) is a metropolitan borough in Greater Manchester, England, named after its largest town, Bolton, but covering a larger area which includes Blackrod, Farnworth, Horwich, Kearsley, Westhoughton, and part of ...

Greater Manchester Greater Manchester is a ceremonial county in North West England. It borders Lancashire to the north, Derbyshire and West Yorkshire to the east, Cheshire to the south, and Merseyside to the west. Its largest settlement is the city of Manchester. ...

, and partly in

Blackburn with Darwen Blackburn with Darwen is a unitary authority area with borough status in the ceremonial county of Lancashire, North West England. The borough includes the towns of Blackburn and Darwen plus a wider rural area which includes the villages of ...

Lancashire Lancashire ( , ; abbreviated ''Lancs'') is a ceremonial county in North West England. It is bordered by Cumbria to the north, North Yorkshire and West Yorkshire to the east, Greater Manchester and Merseyside to the south, and the Irish Sea to ...

. It was opened on 11 March 1971 by

Queen Elizabeth II Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...

for the then Bolton Corporation Waterworks (since

privatisation Privatization (rendered privatisation in British English) can mean several different things, most commonly referring to moving something from the public sector into the private sector. It is also sometimes used as a synonym for deregulation w ...

the reservoir is now owned by

United Utilities United Utilities Group plc (UU) is the United Kingdom's largest listed water company. It was founded in 1995 as a result of the merger of North West Water and NORWEB. The group manages the regulated water and waste water network in North West En ...

). The reservoir's original purpose was to guarantee water for the Croal- Irwell river system and the associated industries. At the most northernly point of the reservoir is an old disused quarry, (Jumbles Quarry) it is now flooded with water due to the presence of the reservoir therefore making it impossible to tell that it is even there! The name Jumbles appeared during the 19th century, it is a variation of ''dumbles''; a northern term for a ravine like valley with wooded sides down which tumbles a fast flowing stream. This reservoir is also fed from the Wayoh and the Turton and Entwistle reservoirs.

References

External links

Picture of Jumbles Reservoir
{{authority control Drinking water reservoirs in England Geography of the Metropolitan Borough of Bolton Reservoirs in Greater Manchester