George Leslie Ltd

Key Facts

  • Client: Scottish Water
  • Engineer: AECOM
  • Conditions of contract: NEC Option C
  • Contract value: £475,000
  • Duration of works: July 2012 – September 2012

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Reservoir Working, Water Supply & Pipeline Work

North Supply/Demand Balance Programme Tarbert (Western Isles)

The project involved improving the water supply-demand balance during drought conditions in the Tarbert water supply area of Harris on the Western Isles through the construction of a raised impounding dam at Loch Braigh along with associated pipework, level monitoring equipment, fish pass and access road.

The main construction elements included:

  • Raising the existing dam impounding level by 1m
  • Modification to the existing intake chamber including intake pipe, penstock & scour facility
  • Incorporating a stepped concrete fish pass
  • Level monitoring equipment installation
  • A new 330m long raw water outlet pipe to replace redundant AC pipeline
  • New access road with footpath upgrade

Due to the remote nature of the works and existing steep unstable access track, it was imperative to establish permanent safe access both to undertake the construction works and to provide a permanent safe access route for future maintenance operations.

For the duration of the construction works the existing overland raw water main supplying the service reservoir had to be maintained. Once the works quality samples had passed for the new 330m raw water main, it was put into commission and the redundant existing main was removed.

News updates


The overall project involves the off-site fabrication and installation of a new linkspan structure at Oban Ferry Terminal for client Caledonian Maritime Assets Ltd (CMal).

12th February 2019

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GL return to the Sound of Kerrera

GL making a return visit to the Sound of Kerrera off Oban, to undertake substantial repairs to the breakwater which suffered collision damage following an altercation with a workboat earlier this year.

14th December 2018

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Polmadie Bridge official opening……..

Michael Matheson MSP and Cabinet Secretary for Transport, Infrastructure and Connectivity covered all his portfolios at the official opening of the new Polmadie Footbridge giving pedestrian and cycle transport access,

18th September 2018

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George Leslie Ltd, Blackbyres Road, Barrhead, Glasgow, G78 1DU  |  |  +44 (0)141 881 9131