by Jake Dew on December 19, 2012
Project type: Weir removal and habitat restoration
Location: Ravensbury Park, Morden, London
Length: 30m
River: Wandle
Client: The Wandle Trust
Installation date: September 2012
Project Brief
A stepped concrete weir on a side channel of the River Wandle created a complete barrier to fish.
Cain Bio-Engineering reconnected the river by breaking out the concrete weir and stabilising the bed using sweet chestnut post flow attentuators and locally sourced large gravels.
We also replaced the dilapidated oak boarding with a a geotextile revetment which is designed to fully vegetate.
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by Jake Dew on November 13, 2012
Project type: Erosion control
Location: Piddinghoe, Newhaven, East Sussex
Length: 50m brushwood bank protection
River: Ouse
Client: Environment Agency
Installation date: April 2012
Project Brief
The River Ouse has large flood embankments on both banks for the majority of the tidal reach. This project focused on repairing a heavily eroded area of the chalk flood embankment.
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by Jake Dew on October 12, 2012
Project type: Erosion Control
Location: Abbotsbury Swannery, Dorset
Length: 320m
River: Chesil Fleet
Client: Strangways Enterprises
Installation date: 2012
Project Brief
The ancient dry stone wall which had once acted as a breakwater to protect the Swannery had fallen into disrepair. This resulted in frequent tidal inundation and loss of land behind the dilapidated wall. Consequently the bank margins of the decoy pond became heavily eroded which was exacerbated by the wildfowl population. High levels of siltation were recorded within in the decoy pond, and nationally important reed bed habitat was lost.
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by Jake Dew on July 27, 2012
Project type: Erosion Control
Location: Stapleford, Salisbury, Wiltshire
Length: 55m of geotextile revetment
River: Wylye SSSI
Client: Balfour Beatie, Mott MacDonald, Highways Agency
Installation date: October 2011
Project Brief
This project is located on the River Wylye adjacent to the A36 west-bound carriageway. River bank erosion was threatening the stability of the highway.
Cain Bio-Engineering Ltd designed and constructed a geotextile structure to re-claim and stabilise the entire length of affected left bank downstream of the bridge.
Winner of Chartered Institution of Highways and Transportation Award for Sustainability 2012
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by Jake Dew on July 27, 2012
Project type: Mill Leat Bypass
Location: Arborfield
Length: 200m of new bypass channel
River: Lodden
Client: Environment Agency
Installation date: 2011
Project Brief
On the River Lodden at Arborfield, historic mill and weir structures prevented fish passage, and had impounded the river for 4km upstream.
A combination of civil engineering and soft engineering techniques were used to design and build a 200m weir bypass channel to reconnect 25km of the River Loddon.
Runner up prize in the Wild Trout Trust river restoration competition 2011 (professional category)
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by Jake Dew on July 27, 2012
Project type: Mill leat and carrier restoration
Location: Hampshire
Length: 500m
River: Upper Itchen
Client: Private landowner
Installation date: 2011
Project Brief
At this historic milling site, three off-take side carriers provided the opportunity to reconnect a perched mill leat with the main river Itchen. Because of a relatively steep fall from the mill leat down to the main river, the gradient had been previously stabilised using concrete weirs to create amenity impoundments with decorative waterfalls.
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by Cain Bio-Engineering on June 21, 2012
Project: Erosion Control
Project Location: Scots Float
River System: Rother Inter-Tidal Channel
Date of Installation: 2005
Project Brief
The project aims were to reinstate the failing flood embankment on a wide outside meander. Erosion was threatening significant areas of farming land and infrastructure in the tidal flood plain.
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by Cain Bio-Engineering on March 20, 2010
Project: River Restoration
Project Location: Dennet Common – near Hungerford.
River System: River Kennet
Client: Environment Agency & Natural England
Date of Installation: October 2009 – March 1010
Project Brief
“The River Kennet between Marlborough and Woolhampton is designated a Site of Special Scientific Interest. It is a nationally important example of a chalk river which supports an abundance of wildlife. Natural England works with owners and managers of SSSIs and to secure the conservation and enhancement of England’s important wildlife sites.
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by Cain Bio-Engineering on December 9, 2009
Project: Erosion Repair
Project Location: Purton, South Gloucestershire
River System: Sharpness Canal
Client: British Waterways May Gurney
Date of Installation: December 2009
Project Brief
When the re-commissioned sluice on the Sharpness Canal was first activated during the summer floods of 2007 to release excess water into the adjacent Severn Estuary the force of the discharge eroded the adjacent SSSI foreshore and exposed the original Victorian spillway.
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by Cain Bio-Engineering on October 20, 2009
Project: River Restoration
Project Location: East Chisenbury, Wiltshire
River System: River Avon
Client: Wessex Water
Date of Installation: October 2009
Project Brief
In October 2009 Cain Bio-Engineering implemented a 650m river restoration scheme on the upper Hampshire Avon at East Chisenbury in Wiltshire.
This was the second phase of ‘design/build’ work that CBE had undertaken at East Chisenbury for ‘Wessex Chalk Streams Project’, a partnership between the Wiltshire Wildlife Trust, Natural England, the Environment Agency and Wessex Water plc .
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