Objective to develop river restoration scheme that benefitted ecology and flood risk. cbec led the design work from prioritisation through to implementation stages. The designs were supported by various physical assessments, including hydrodynamic/sediment transport modelling. Final implemented designs included remeandering canalised reaches, embankment/weir removal and 'leaky log jams'.
A full 'process restoration' approach was employed, to reinstate geomorphic and ecological processes. Gravel augmentation, large wood material addition and the removal of flood embankments were used to reduce constraints to natural processes. Hamish developed the final designs for the site, managing the project from inception through post-construction monitoring.
Aim to design restoration/enhancement measures on River Nar, Norfolk. This included detailed geomorphic and topographic surveys to appraise potential restoration options and develop detailed designs of the favoured option. Subsequent hydrodynamic modelling was used to develop the final designs and site supervision of the implementation process was provided.
The objective was to produce a stable design for a day-lighted culverted channel. The initial channel constructed prior to our involvement was very unstable with up to 2m incision. We surveyed the channel, modelled a design flow and produced a stable step-pool design.
The objective was to reinstate natural geomorphic processes in a 1.7km reach of the River Cree by partial removal a of a series of weirs. Modelling of the reach confirmed that the proposed modifications to the weirs would produce a more natural sediment transport regime and a more natural and diverse channel morphology.