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Bottoms Reservoir (Derbyshire)

Derbyshire geography stubsReservoirs in DerbyshireReservoirs of the Peak DistrictUse British English from August 2020Works by John Frederick Bateman
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Bottoms Reservoir is a man-made lake in Longdendale in north Derbyshire, England. It was constructed between 1865 and 1877, by John Frederick Bateman as part of the Longdendale Chain of reservoirs to supply water from the River Etherow to the urban areas of Greater Manchester. The upper reservoirs supplied the drinking water, while Bottoms and Vale House reservoirs regulated the flow downstream for the benefit of local water-powered mills. The reservoir was obliged to release ten million gallons a day. To ensure this, a gauging basin 40 feet (12 m) in diameter was built. The drinking water flowed through the Mottram Tunnel to the Godley covered reservoir.The Peak District Boundary Walk runs along the south-western side of the reservoir and over the dam.

Excerpt from the Wikipedia article Bottoms Reservoir (Derbyshire) (License: CC BY-SA 3.0, Authors, Images).

Bottoms Reservoir (Derbyshire)
Padfield Main Road, High Peak

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N 53.469 ° E -1.961 °
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Padfield Main Road
SK13 1EZ High Peak
England, United Kingdom
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Valehouse Reservoir
Valehouse Reservoir

Valehouse (or Vale House) Reservoir is a man-made lake in Longdendale in north Derbyshire, England. It was built between 1865 and 1869 as part of the Longdendale Chain of reservoirs, which was built to supply water from the River Etherow to the urban areas of Greater Manchester, while maintaining a constant flow into the river. The upper reservoirs supply the drinking water, while Vale House and Bottoms are compensation reservoirs which guarantee the flow of water to water-powered mills downstream. Valehouse, with a crest elevation of 503 metres (1,650 ft), is too low to supply water under gravity to the Mottram Tunnel, so could not be used as an impounding reservoir. Today 45 megalitres of compensation water are released each day into the River Etherow. Vale House Mill was purchased by Manchester Corporation in 1864, but a few villagers remained in the village of Vale House until 1868. In 1869 the hamlet was flooded out. The village was substantial, having an estimated population of 600 houses and 100 cottages. There was a gasworks and a school house for 24-30 scholars. Vale House Mill was the first spinning and weaving mill in Longdendale; it was built in 1775 by Samuel Oldknow. In 1864, it was owned by William Hobbs and Co. It had two carding rooms, nine spinning rooms, three weaving rooms and two Blowing Rooms. It had 15,416 spindles and 326 power looms. Vale House residents worshipped at the Ebenezer Methodist Chapel in Tintwistle (built in 1830), which was above the reservoir.The chimney at Vale House Mill survived the construction of the reservoir and became known as the "Whispering Chimney" as it produced ghostly noises during strong winds. It was demolished in 1887 at the request of the Manchester to Sheffield Railway Company, who feared for the stability of their trains when all the passengers crowded over to one side of a carriage to see the chimney protruding from the waters of the reservoir. The puddle trench was dug to a depth of 35 feet (11 m) to a layer of lower millstone grit, which rested on limestone shales, and a good watertight seal was easily achieved. It was stated in a statutory report, under the Reservoir Safety Act 1975, dated 12 June 1984, that all five reservoirs could be over-topped during a Probable Maximum Flood, so major works were undertaken. The retention level was raised by 3.81 m (12.5 ft), the embankment crest by 1.8 m (5 ft 11 in), and the wave wall was rebuilt. An 80-metre (260 ft) wide auxiliary spillway was constructed, two new 900-millimetre (35 in) butterfly valves installed and existing valves descaled and motorised. The 11 kV overhead powerline was routed in a new embankment crest duct.

Arnfield Reservoir
Arnfield Reservoir

Arnfield Reservoir is a man-made lake in Longdendale in north Derbyshire, England. It was constructed in 1854 as part of the Longdendale chain to supply water from the River Etherow to the urban areas of Greater Manchester. Unlike the other reservoirs in the chain, Arnfield and Hollingworth Reservoir are not in the Etherow valley but lie in the valley of tributary brooks to the north and above (Arnfield lies around 1 mile from Bottoms Reservoir in the Longdendale Chain). From Arnfield the water is extracted to pass through the Mottram Tunnel to Godley.The Manchester Corporation Waterworks Act 1847 gave permission for the construction of the Woodhead, Arnfield and Hollingworth Reservoirs and an aqueduct to convey waters to a service reservoir at Godley. The Manchester Corporation Waterworks Act 1848 allowed the construction of Torside and Rhodeswood Reservoirs, and an aqueduct to convey the water to the Arnfield reservoir. The earthen embankment is 17 metres (56 ft) high and the five sections total 953 m (3,127 ft) in length. It was constructed of local clay; a masonry overflow weir protects the reservoir from overtopping. Beneath it lay the trapezoidal Longdendale aqueduct that followed the contour to take water from the reservoirs to the Godley reservoir. Until the 1960s, water was treated by passing it through straining frames at Godley. In the 1960s, a more sophisticated system of treatment was employed. Treatment plants were built at Arnfield and Godley. At Arnfield, lime, ferric sulphate and polyelectrolyte are added to the water in mixing chambers. This flocculating agent binds together the impurities, which sink and are removed in sedimentation tanks. At Godley, lime is added to remove manganese, and the water is filtered and chlorinated and fed into the distribution network.Also in the 1960s, part of the Longdendale aqueduct was replaced with 1,200 mm (47 in) diameter pipes. In 1990, the Hollingworth Reservoir (now part of Swallows Wood nature reserve) was decommissioned and levelled and waters from the Ogden Brook fed into Arnfield. In 2004, two sections of the embankment were strengthened.