High Energy Rivers

Higher energy rivers can often be stabilised using bioengineering techniques. Salix have unparalleled experience in the design and implementation of these systems.

Traditional engineering solutions have called upon hard revetments such as sheet piling, blockstone or gabion baskets, all of which can have a detrimental impact on river and riparian habitat.

If hard engineering solutions are required, some form of bioengineering solution, such as reinforced vegetation or brush willow can often be incorporated to mitigate the ecological impact of the revetment.

Salix have the in house capabilities to provide both hard and soft engineering revetments. 


Case Studies

2T AquaRockbags 18 months post installation
Solution

Scour Prevented by AquaRockBags

AquaRockBags® were installed by the local council highways team to prevent a road subsiding due to scour and erosion caused by the adjacent watercourse.​ AquaRo…

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AquaRockBags going in river bank restoration works
Solution

Yearl Weir

As an ecologically sensitive site the use of traditional hard engineered bank protection was not an option and Salix’s bioengineered designs were favoured.

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AquaRockBags used as erosion control
News

AquaRockBag launch

Salix’s AquaRockBag is an ecologically sensitive method of erosion control. Working with natural processes to provide erosion control & habitat biodiversity

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Exeter FAS Rock Mattresses fully vegetated naturally
Solution

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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willow stakes taking well on the River Cleddau
News

The advantages of Salix Bioengineering Solutions V Blockstone on two Welsh Rivers – Case Study Evidence

Eight years on and vegetative erosion control is a massive success on the River Cleddau as an alternative to blockstone.

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Porter Brook - an oasis for wildlife
Solution

Flooding and erosion prevention in Sheffield

When a flashy stream was unearthed in Sheffield Salix were brought in as specialist experts in erosion management by the Wild Trout Trust. The Porter Brook was…

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Coir Rolls pre-established with native plants providing erosion control at Porter Brook
News

Flashy Floods in Car Park Solved

Rock Rolls and pre-planted Coir Rolls & Pallets were used to prevent erosion whilst creating a lovely habitat in Sheffield City centre where a culverted stream…

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Well established pre-planted Coir Rolls after a significant flood event
Solution

River Bank Erosion Management at Wisley Golf Course

Extreme river bank erosion rectified by regrading the river bank and using Coir Rolls and Coir Pallets, preventing erosion naturally

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VMax C350 and Bionet protect the soils both above and under the water
News

Bringing Biodiversity to Hydro Plant in Pershore

VMax C350 & Eronet are used on this hydro project to protect the inlet channel and surrounding soils from erosion, working with nature for natural solutions

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Tregaron July 2016
Solution

Flood Alleviation at Tregaron

The aim of the project was to protect around 100 houses and businesses that had been subjected to increased flood threats. Constant flooding was a problem with…

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Rock Rolls and Coir Rolls at Stourport
News

Tough Green Alternatives to Hard Engineering

Contractors, Consultants and Researchers are praising our Rock Rolls and Rock Mattresses for their proven ability to offer sustainable cost effective solutions…

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Rock-Rolls-on-the-River-Washford
Solution

River Washford Roadwater Erosion Protection

The increasing frequency of flood events on the River Washford required the existing system to be replaced and improved.

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Spider machine at Cwmparc
Solution

Cwmparc River Restoration

Salix worked with Natural Resources Wales at Cwmparc in the Rhondda Valley to renaturalise the water courses in order to reduce flood risk and increase biodiver…

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Solution

River Dulais, Rhosmaen Llandeilo

Salix’s River Dulais project demonstrating the use of large woody debris (LWD) is now ten years old and has been is included in the manual of River Restoration…

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Pre-established coir rolls and pallets
News

Bridging the Ecological and Engineering Gap

Bridging the ecological and engineering gap with our effective bio-engineering solutions

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VMax-C350-and-P550-erosion-control-in-CIWEM
News

Turf Reinforcement Erosion Mats in CIWEM

Our Technical Director, David Holland, has been in the most recent edition of CIWEM’sThe Environment Magazine talking about the value of our 3D reinforced turf…

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VMax P550 turf reinforcement mat showing good vegetation growth
News

Erosion Control on Loch Garry Spillway

Tensar VMax P550 is designed for use as erosion control on steep slopes, high-flow channels, spillways, and shorelines.

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Cwmparc and the spider in action
News

Slowing the flow at Cwmparc

Cwmparc with the spider in action With funding from the Welsh Government’s Nature Fund, we supported Rhondda Cynon Taf Council in taking steps to naturalise one…

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One Year Later. Note the Reed Canary Grass (Phalaris arundinacea)
Solution

Darwen Bank Stabilisation

A 120 metre reach of river had been subject to ongoing bank instability issues. A gas pipeline set in the bank was dangerously close to being exposed and bank r…

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Solution

River Rhiw Bank Protection

Salix were awarded the contract and began works to carry out 300 metres of riverbank protection to protect this existing exposed high pressure gas pipe in March…

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Rock mattress tie in detail at hydraulic jump zone with Vmax C350
News

Sandwich Flood Alleviation Scheme

The £21.7 million flood defence scheme involves works on 16 individual reaches of the River Stour and will reduce the risk of tidal flooding to 488 homes and 94…

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News

Roadwater Erosion Protection

The River Washford runs through the village of Roadwater near Minehead, Somerset. The catchment creates a flashy river which floods parts of the village in larg…

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Living-Root-Wad-Revetment
News

10th Anniversary River Dulais Project

Live Willow Root Wad Installation Tenth Anniversary of Salix’s Project on The River Dulais, Rhosmaen, Llandeilo. Salix’s River Dulais project demonstrating the…

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River Teme 4 machines placing fill
News

Tough Test on The Teme

The River Teme is a sensitive SSSI and SAC river and over 150 metres of severe bank erosion was threatening a National Grid pipeline. Salix were the lead Design…

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B5106 looking towards Llanrwst floods
News

Spillways Surge Ahead!

B5106 looking towards Llanrwst floods Salix have extensive experience of spillway protection offering advice to engineers involved in this area of expertise. Ou…

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Rescuing the River Rhiw
News

Rescuing the River Rhiw

The River Rhiw, Mid Wales was the scene of some rapid intervention by Salix’s Specialist Contracting team lead by Technical Director,David Holland. Our client W…

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Solution

Afon Gwydol Embankment

Works were required to repair an eroding railway embankment adjacent to the river. This resulted in the embankment encroaching into the river, causing erosion p…

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News

Rhodri Tames The Tywi!

We have been working hard on the River Tywi project and thanks to the efforts of our Site Agent Rhodri Henry (above image, on the right) work has progressed wel…

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Balancing-the-Brooks at Birmingham University
News

Balancing the Brooks!

Bank post flooding event showing no erosion or damage The saying “a picture paints a thousand words” could not be more accurately applied than to a current Sali…

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River-Tywi-Looking-downstream
News

Salix on the River Tywi

Client – Wales & West Utilities Salix have been awarded a design and build contract on the River Tywi in Carmarthen. Various bioengineering techniques will…

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Ecclesbourne
News

River Ecclesbourne

Client – Environment Agency Pilot scheme for catchment restoration of the River Ecclesbourne, that forms part of the Water Framework Directive aim to return riv…

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Solution

River Ebbw Bank Stabilisation

Salix worked with consulting geotechnical engineers to provide design and build proposals to stabilise over 800 metres of steep riverbank composed of highly ero…

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Fully Established Bioengineering Solution Replacing Gabion Design
Solution

River Gwenfro

A private developer had back gardens adjacent to a river that when in flood created severe scour issues. Initial river modelling indicated flow velocities in ex…

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Solution

River Pipeline Crossing

Salix were invited to submit a bioengineering solution to solve an erosion issue at a pipeline crossing in West Wales. The solution used a combination of locall…

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Solution

Treboeth Cobble Channel

A new development had slope stability issues due to an adjacent cobble bed watercourse badly eroding the soils and downcutting the bed within the channel.

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River Teme Restoration
Solution

River Teme Restoration

The River Teme is a sensitive SSSI and SAC river and over 150 metres of severe bank erosion was threatening a National Grid pipeline.

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