Grizedale Dock Impounding Reservoir

Replacement of a badly corroded outlet valve from the reservoir to prevent the possibility of future failure and consequential flooding. All in the interest of safety (ITIOS).

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The work involved the replacement of an old outlet valve with a new hydraulically operated valve. Installation of the new valve had to be done underwater without draining the reservoir. The valve was installed by divers working at a dpet of 22m along a 50m tunnel. Other works included filling the outlet tunnel with benefil foam and installing protection fencing.


United Utilities


Grizedale Dock IR




22 weeks