George Leslie Ltd

Key Facts

  • Client: SEPA
  • Engineer: Royal Haskoning DHV
  • Conditions of contract: NEC 3: Short Form
  • Contract value: £380,000
  • Duration of works: 5 Months

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General Civil Engineering, Renewables & Environmental

Gottar Water Fish Pass

Gottar Water is a tributary of the River Gryffe which flows through the Quarriers Village development situated between Kilmacolm and Bridge of Weir in Renfrewshire.

The 19th century Victorian concrete weir which had formed a pooled water supply for the original estate’s fire-engine has presented a barrier to upstream fish migration effectively preventing access to 9km of excellent upstream spawning habitat for salmon, sea trout and other migratory river species which have been in evidence immediately downstream of the weir.

The objective of these works was to create passage for migratory fish and involved:

  • Re-establishing the overgrown river-banks
  • Re-grading the river-bed sediment
  • Cutting a 2m wide ‘notch’ in the existing weir and installing a steel baffle-plate nose cone
  • Constructing new, downstream pools with ‘notched’ mini weirs and wing walls

Almost immediately upon completion, salmon were observed migrating upstream, across the new weirs and ladder ponds – with the new structure performing exactly as had been intended.

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