Conwy Spillway Success

Conwy overtopping winter 2015

In 2009 Team Van Oord installed 9000m2 of Salix’s VMax Shear Stress Turf as part of the Conwy Flood Alleviation Scheme, seven years and many major overtopping events on and it has stood the test well.

Cwmparc River Restoration

Spider machine at Cwmparc

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 biodiversity.

Green Swales on Roadside

A11 SuDS green swales on roadside zero carbon

Soft engineered ‘Green Swale Grass Channel’ attenuates road run-off water, filters suspended solids, and traps hydro carbons and heavy metals, significantly improving water quality.

Rock Rolls – Effective Erosion Control

Rock rolls arrive in bundles with certified lifting straps

Rock Rolls offer flexibility and the fact they arrive on site pre-filled with stone greatly reduces installation time and therefore cost, compared to in-situ filled gabions. Rock rolls and mattresses can also be installed during live flow situations, which is not possible with standard gabions.

Erosion Control on Loch Garry Spillway

VMax P550 turf reinforcement mat showing good vegetation growth

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

Slowing the flow at Cwmparc

Cwmparc and 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 of the concrete channels which brings water down from the mountains at Cwmparc,

Sandwich Flood Alleviation and Spillway Scheme

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

The £21.7 million flood defence scheme involved works on 16 individual reaches of the river and it reduced the risk of tidal flooding to 488 homes and 94 commercial properties in Sandwich. Client – Jackson Civil Engineering working on behalf of the Environment Agency.

Scour Protection at Lhanbryde Spillway

Llanbryde spillway with VMax P550

Following the 2005 £2million Lhanbryde Flood Alleviation Scheme, near Elgin in Moray, in Summer 2014, Salix worked with Royal HaskoningDHV engineers to improve erosion control on the dam’s spillway.

Salix installs new green channel to reduce A11 pollution

Fully biodegradeable HydraCX being sprayed onto the green drainage channel to aid erosion control.

Salix has installed a revolutionary green drainage channel along an 18km stretch of the A11 in Norfolk, between Fiveways and Thetford.

Naturalising a Stream: Bedlinog

Bedlinog coir roll application

Salix reviewed the options for improving water control and biodiversity at Nant Llwynog stream – an old reclaimed tip site close to the village of Bedlinog in the Taff Bargoed Valley.

Salix Rock Rolls Protect Titchwell Marsh

Titchwell Marshes Rock Rolls close up

As part of a series of measures to protect the freshwater habitats at Titchwell Marsh Nature Reserve on the north Norfolk coast,

Salix is now Europe’s largest producer of coir fibre rolls

coconut husks

Working directly with ethical, organic and sustainable suppliers in Sri Lanka, each year Salix imports hundreds of tonnes of compressed coir fibres and turns them into Coir Rolls and Pallets at its Thetford nursery in Norfolk.

River Rhiw Bank Protection

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 2013.

Coir Pallets

Purple Loosestrife flowering within pre-established coir pallets at Salix nursery

Salix produce a wide range of pre-established coir pallets planted with high quality native plant species. Coir pallets are composed from coir fibre which is a sustainable waste product from the husk of the coconut shell.

Coir Rolls

Selection Of Unplanted and Pre-Established 200mm and 300mm Coir Rolls

Coir Rolls are an organic living revetment that provide erosion control and rapid vegetation establishment. Salix have developed a range of specific species mixes for use in all types of water bodies.

VMax³ Shear Stress Turf

Salix have the facilities to contract grow turf using the VMax3 range of  Turf Reinforcement Mats

Salix have the facilities to contract grow turf using the VMax range of Turf Reinforcement Mats (TRMs). VMax C350 or P550 is used as the reinforcement element within the turf giving unprecedented scour protection performance.

Sandwich Flood Alleviation Scheme

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


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 commercial properties in Sandwich.

Medmerry Realignment Scheme

Water vole works EA photo

Medmerry is one of the stretches of coastline most at risk of flooding in southern England. The overall scheme involves building major new sea defences inland and allowing a new intertidal area to form between Selsey and Bracklesham in West Sussex.

BioHaven Innovation

floating island wetlands

Wetlands are an incredibly valuable environment, both to nature and wider society; BioHaven can offer all of the ecosystem services of a healthy functioning wetland but can be placed in an area where it would be impossible to put a constructed or conventional wetland.

Rock’n’Roll!

Rock rolls arrive in bundles with certified lifting straps

Rock Rolls are a robust, flexible and permanent revetment for use around reservoirs, shorelines, lake edges,

Salix appointed Sole UK Distributor for VMax Soil Erosion Range

Installing-VMax-P550-Turf-on-the-Teme

Salix are pleased to announce that We have been appointed as the sole distributors of the VMax® range of soil erosion control products formerly known as North American Green.

Better Banks!

Lewes in Aug 2015

The Environment Agency are responsible for the river bank stability at Railway Lane, Lewes and recognising the integrity of the existing blockwork facing was deteriorating began to look into solutions to this challenge.

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.

Our VMax range of Composite Turf Reinforcement Mats (CTRMs) including VMax C350,

Longham Lakes

Longham lakes

Working for Bournemouth & West Hants Water, Salix were appointed as Main Contractor to undertake 2km of bioengineering works to stabilise the shoreline of a new reservoir.

Foss Dyke Bank Stabilisation

Bank Stabilisation

A rise in pleasure boating on the Foss resulted in severe boat wash. Monitoring revealed that the rate of bank erosion was up to 2.5 metres in a year over a 2km stretch.

Pembroke Commons

Pembroke Commons revegetion river restoration

1 km of new and existing channel was enhanced using bioengineering techniques as part of a flood protection project in the centre of historic Pembroke in West Wales.

Conwy Flood Alleviation and Spillway Scheme

Spillway

Salix supplied 9000m2 of VMax3 Shear stress turf in September 2009. Just 2 months later the area experienced the worst flooding in 25 years of recording with floods exceeding the 1:30 year events of 2004/2005.

River Ebbw Bank Stabilisation

River restoration

Salix worked with consulting geotechnical engineers to provide design and build proposals to stabilise over 800 metres of steep riverbank composed of highly erodible colliery shale.

River Gwenfro

Fully Established Bioengineering Solution Replacing Gabion Design

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 excess of 3.5m/sec.

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 locally harvested willow and Rock Rolls to provide a stable revetment in this cobble bed river.

Dan Y Lan Landfill Slip

Dan y Lan landfill

The finished slope was 36 degrees, 40 metres in height and 60m wide. 250mm depth of topsoil was required, rather than the nominal 50-75mm, as cover for marginally contaminated on site fill material.

Calverton Tip Drainage

Calveton tip drainage

Colliery shale and sandy soils have one thing in common; both are highly susceptible to erosion by flowing water. Both soil types were present on site.

Waverley Colliery Reclamation

C350

A large drainage channel designed to take flows of up to 3m/sec was created to take runoff water from a 741 acre site at Waverley, one of Europe’s biggest collieries.

Pre-filled Rock Roll

Rock rolls provide an instant flexible solution to many scour problems

Rock Rolls are a robust and permanent revetment for use around reservoirs, shorelines, lake edges, streams and river banks. They are cost-effective revetments that are suitable alternatives to rock rip rap and gabions in many scour applications.

Pre-filled Rock Mattresses

Rock Mattress installed Lockwood Reservoir with built in lifting strops

Rock Mattresses are a robust and permanent revetment for use around reservoirs, shorelines, lake edges, streams and river banks. They are cost-effective revetments that are suitable alternatives to rock rip rap and gabions…

Beacon Park

Dredging in front of Lichfield Cathedral

Salix were employed by main contractor Casey to undertake the restoration work to Beacon Pool for Lichfield Council on this Heritage lottery funded project.

Treboeth Cobble Channel

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.

Water Vole Habitat Mitigation

Whole Site Aerial 19.09.13 Copyright of the Environment Agency

Medmerry is one of the stretches of coastline most at risk of flooding in southern England. The overall scheme involves building major new sea defences inland and allowing a new intertidal area to form…

River Tywi

River Tywi Pipeline Protection

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 gas pipeline on the River Tywi.

Worden Park Leyland

Completed drainage channel

Following works within Worden Park to remove a culverted section of Cricket Field Brook that was the cause of flooding to neighbouring residential properties, a long term solution was required…

Railway Lane, Lewes

Before work commenced railway line 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 seepages emanating from the slope profile.