Salt Marshes & Intertidal Rivers

Salix have extensive experience of design and implementation of bioengineering works within inter tidal rivers. We co-authored the Environment Agency publication “Estuary Edges: Ecological Design Guidance” together with Mike Wells of Biodiversity By Design, demonstrating our knowledge in this challenging environment. Inter tidal rivers offer a unique challenge for bioengineering solutions due to the water quality, high salinity, the highly variable water levels and long periods of inundation that occurs with the tidal influence. In addition, the nature of the fine alluvial soils in estuaries and the turbulent flows and wave action means that erosion is prevalent where no vegetation occurs. Salix have developed bio engineering techniques to suit these environments and can establish inter tidal plant species, including plants grown from local provenance seed. We can also carry out more traditional methods such as sheet piling. Read our in-depth article on bioengineering techniques applied in the Thames Estuary and how they work with natural processes and plant species in order to provide long term bank stability whilst creating these vital missing habitats.

Rock Mattresses erosion control on Exeter Flood Defence Scheme

High Energy Inter Tidal Solution on the River Exe

Salix’s Ready-filled Rock Mattresses provided a solution to flood protection works needed on the River Exe. This quick and cheap approach provided a stable, nat…

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Royal Wharf intertidal reed bed solution

Intertidal Planting Solution on River Thames

Creating a reed bed on an intertidal part of the Thames river is challenging – but Salix achieved a fantastic result as a consequence of their unique design app…

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River Roding Bank Protection

Salix advised engineers Halcrow on bioengineering methods to stabilise a regraded slope as part of an inter-tidal river enhancement project. The existing vertic…

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River Roding Enhancement

The River Roding is an inter-tidal river and these works were undertaken 100m upstream of the Barking Barrier, Greater London. The works were part of an Environ…

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River Tywi

Salix were awarded a design and build contract to prevent further erosion of a section of the riverbank and reinstate a scour hole threatening a high pressure g…

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Railway Lane, Lewes

The integrity of the existing blockwork facing was deteriorating as a result of the tidal inundation and draw-down cycles together with areas of groundwater see…

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