Case study:The Taw River Improvement Project (TRIP)

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Location: 51° 4' 37.97" N, 4° 9' 59.63" W

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Project overview

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Status	In progress
Project web site
Themes	Fisheries, Flood risk management, Habitat and biodiversity, Land use management - agriculture, Water quality
Country	England
Main contact forename	Laurence
Main contact surname	Couldrick
Main contact user ID
Contact organisation	North Devon Biosphere Reserve, Westcountry Rivers Trust
Contact organisation web site	http://www.wrt.org.uk/
Partner organisations	Farming and Wildlife Group South West, Devon Wildlife Trust, Silvanus
This is a parent project encompassing the following projects

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Project summary

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TRIP is a partnership project that will use CRF funds to manage restoration work to deliver habitat improvements in the Taw catchment. The partnership, led by the Westcountry Rivers Trust, has been carrying out river restoration and addressing the causes of Water Framework Directive issues together for many years. The outcomes of the project are the following: Water quality management – More con-sistent supply of better water quality; Improved biodiversity - increased hab-itat biodiversity and renaturalisation; Social - Improved leisure environment for angling and recreation; Economic - Improved fisheries and spawning for commercial stocks; Flood attenuation and management - Increased wetted and wooded areas; Counteract climate change - Carbon sequestration through wetland sinks.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Site

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Name	Taw river catchment
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body	No
National/international site designation
Local/regional site designations
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use	Intensive agriculture (arable)
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)
Project started
Works started
Works completed
Project completed
Total cost category	1000 - 5000 k€
Total cost (k€)	23322,332 k€ <br />2,332,000 € <br />
Benefit to cost ratio
Funding sources	Catchment Restoration Funds

Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure	Barriers to fish migration, Flood risk management
Hydromorphology	Continuity for organisms, Structure & condition of riparian zones
Biology	Fish
Physico-chemical	Nutrient concentrations
Other reasons for the project	Economic, Social, Climate change mitigation

Measures

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Structural measures
Bank/bed modifications	Marginal planting, Gravel augmentation
Floodplain / River corridor	Creation of a flood expansion area
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)	Improved leisure environment for angling and recreation
Other	Participation in works

Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Physico-chemical quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Any other monitoring, e.g. social, economic

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Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Monitoring documents

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Image gallery

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Additional documents and videos

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Additional links and references

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Link	Description

Supplementary Information

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