• Description

    Cottage at Tunstall Reservoir, Wolsingham, Co. Durham. I'm not sure why this cottage had a bell attached to it's chimney. Maybe it used to be a school, although a very small one. The other thought was a warning bell, as this cottage stood at the end of the Dam wall. Maybe someone knows the answer to this. ? TUNSTALL RESERVOIR, is situated in the North Pennines near Wolsingham. It was created for the Weardale and Shildon District Waterworks Company. The construction of the Dam was between 1873 and 1879. An earth embankment dam was built across the valley of Waskerley Beck. It measures 1020ft long and 82ft high and was constructed with a puddle clay core. This extended upward from the cut-off trench excavated into the rock foundation on the hillside. A seven foot diameter draw-off tunnel in one abutment controls reservoir elevation In 1876 a partially filled reservoir was found to be leaking water through fissures in the rock to downstream of the cut-off trench. Thomas Hawksley , a supervising engineer extended the cut -off with brickwork and concrete, but this failed to stop the leakage. Hawksley then adopted a novel technique of pumping cement grout into holes bored in rock below the trench alignment. This treatment was used on other leaking dams and was successful. This became a normal practice for construction and remediation at dams and water resource projects. Later in 1902 Tunstall passed to the Weardale and Consett Water Company then to the Durham Water Board in 1920. It is now owned by Northumbrian Water following privatisation. The reservoir treatment works located immediately below the dam wall used to be supplied with water from the reservoir , but with the opening of a new treatment works at Wearhead this became abandoned. The reservoir is now only used to maintain minimum regulatory flows on the River Wear, in support of raw water abstractions further downstream at Chester-Le-Street. TUNSTALL FISHERY uses the southern part of the Reservoir for both Boat and Bank Fishing
  • Owner

  • Source

    Flickr (Flickr)
  • License

    What does this mean? All Rights Reserved (Seek permission to reuse)
  • Further information

    Resource type: Image
    Added by: Simon Cotterill
    Last modified: 7 years, 3 months ago
    Viewed: 797 times
    Picture Taken: Unknown
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