The Threave Landscape Restoration Project has ambitions to develop the Threave Nature Reserve and create a species-rich wetland of national significance on the Threave Estate near Castle Douglas, Dumfries and Galloway
As part of this wider restoration project, cbec was commissioned to undertake an assessment of feasible options to restore the wetland and better connect it with the River Dee. Following agreement of the preferred restoration options, cbec was asked to take the preferred option through to detailed design and provided construction supervision for the construction phase of works, which took place in November 2021. Existing conditions and design modelling were undertaken to develop an optimal design of a semi-permanent wetland on the Threave Estate, which inundated at low to moderate flows to encourage biodiversity and wetland ecology. In addition, a flood risk assessment was undertaken, which considered changes to the inundation and flood risk extents as a result of the proposed restoration measures. Outputs included detailed design drawings, a cut and fill analysis and an associated bill of quantities.
The work has since been successfully carried out, with cbec staking out the design and providing construction support during the build. The project was a finalist for RSPB Scotland’s Nature of Scotland Award in 2022.
You can also watch an episode of ITV’s ‘Border Life’ featuring the Threave here.