page_title: Thirlmere Aqueduct
section_title: Aqueduct technical data
hierarchical_section_title: Thirlmere Aqueduct / Aqueduct technical data
caption_attribution_description: English: Lake District Water flows under here. The Thirlmere Aqueduct carries water from the Engmish Lake District to the reservoirs at Audenshaw, a distance of approx. 96 miles . It was constructed by Manchester Corporation Waterworks in phases completed between 1897 and 1925. Carrying approx. 200 million litre per day, it takes about 30 hours for water,which flows under gravity, to travel the length of the system. These structures, which I assume are valve houses, appear at intervals along its length. The journey to Manchester starts here: 19789
context_page_description: The Thirlmere Aqueduct is a 95.9-mile-long pioneering section of water supply system in England, built by the Manchester Corporation Water Works between 1890 and 1925. Often incorrectly thought of as one of the longest tunnels in the world, the aqueduct's tunnel section is not continuous.
  The aqueduct was built to carry approximately 55,000,000 imperial gallons per day of water from Thirlmere Reservoir to Manchester. The construction of the reservoir and aqueduct was authorised by the Manchester Waterworks Act of Parliament. The first phase was completed in 1897 and, for the pipeline sections, subsequent phases were completed in 1925. The first water to arrive in Manchester from the Lake District was marked with an official ceremony on 13 October 1894.
context_section_description: The aqueduct is 95.9 miles long from Thirlmere reservoir to Heaton Park Reservoir 53°32′32″N 2°15′41″W, Prestwich.  Its most common form of construction is cut-and-cover, which consists of a "D" section concrete covered channel, approximately 7.1 feet (2.2 m) wide and between 7.1 feet (2.2 m) and 7.9 feet (2.4 m) high. There are 37 miles (59.5 km) of cut and cover, made up of concrete horseshoe-shaped sections 12 inches (300 mm) thick.  Typically, the conduit has 3 feet (0.91 m) of cover and traverses the contours of hillsides.
  It is the longest gravity-fed aqueduct in the country, with no pumps along its route. The water flows at a speed of 4 miles per hour (6 km/h) and takes just over a day to reach the city. The level of the aqueduct drops by approximately 20 inches per mile (30 cm/km) of its length.
caption: Valve house between the Kellogg's factory and the fire station in Stretford, near Manchester
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