SUDS & Drainage Channels

The key, limiting factor on using vegetation to line drainage channels is high velocity flow conditions and the duration of the flood event. Under long duration flow events, vegetation can fail and severe erosion can occur under relatively low velocities.

Salix specialise in designing and implementing “Reinforced Vegetative” channel linings where traditionally rock or concrete revetments were the only option.

With a high performance reinforcing geomat and suitable species selection, vegetative linings can be used in very high-energy situations.

Research from the USA has quantified the performance of reinforced vegetation and as a result, these techniques can be confidently applied on spillways and channels with velocities up to 7 m/s.


Case Studies

Swales over-sprayed with TerrAffix-G and HydraCX week 5 grasses starting to establish
News

Large Green Swale Project

This large roadside project involved creating 28km of green engineered roadside swales on 14km of dual carriageway. Six weeks after treatment we had significant…

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Jack Keys laying Rock Mattresses in river bed for erosion control
Solution

Our Rock Products are the (Jack’s) Key to Preventing Erosion

Jack’s Keys needed a rapid response to scour and erosion problems. Our pre-filled Rock Mattresses and Rock Rolls were the answer, our Menzi Muck Spider machine…

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‘Rock Mattress as scour apron for headwall
News

SuDS Scour Aprons & Spillways – The New Sensitive Approach

Rock Mattress as scour apron for headwall In 2017 we were commissioned by Aspire Defence for our specialist knowledge in erosion control. A large scale series o…

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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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A perfect green roof covered in poppies
News

A Down To Earth Green Roof Solution

Creating a green roof on a 43° pitch using our HydraCX and native wildflower seed

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SuDS slow flow drainage channel
Solution

Erosion Control at SuDS project

Rock Rolls and Rock Mattresses are both easy to put into place, prevent erosion and can withstand high flows whilst allowing for the natural establishment of pl…

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Flood Alleviation and SuDS management at Witton Gilbert
News

Residential Flood Defence Scheme at Witton Gilbert

The decision was made to use Rock Rolls & Rock Mattresses at this residential flood alleviation scheme because of ease, cost and environmental benefits

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Eronet c125 will ensure that the soil behind the Coir Rolls and Pallets does not get washed away whilst plants establish
News

The Avenue, Erosion Control & Habitat Creation Within SuDS on Old Contaminated Land

Salix have been appointed as specialist contractors to deal with the erosion control and habitat creation within a SuDS for a mix of housing and business parks…

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Solution

Naturalising a Stream at Bedlinog

Constant flooding and erosion had been causing some serious problems for Merthyr Tydfil Council who manage an old reclaimed tip site, close to the village of Be…

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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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Cleanleach demonstration
News

Leachate Recycling at HTA Conference

As part of its work to help develop the new European-funded Cleanleach leachate purification system, Salix River & Wetlands Services is attending the HTA’s Plan…

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A11 drainage channels vegetating
Solution

Green Swales on Roadside

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

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News

Salix installs new green channel to reduce A11 pollution

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

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News

Salix to showcase innovative phosphorus removal techniques

Phosphorus is one of the most common parameters causing a watercourse to fail water quality standards set out under the Water Framework Directive. 

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East Tullos map
News

New wetland habitats at East Tullos Burn

Salix has worked with Aberdeen City Council, cbec and Walking-the-Talk to restore the East Tullos Burn in St Fittick’s Park, Torry, transforming it from a strai…

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News

Olympic Odyssey for Salix

Olympic Park Wetland 2012 We are delighted to finally unveil our role in making the Olympic Park a reality, from our initial involvement way back in 2008, right…

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Solution

Pembroke Commons

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 W…

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Solution

Calverton 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.

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C350
Solution

Waverley Colliery Reclamation

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 colli…

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Completed drainage channel
Solution

Worden Park Leyland

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…

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