Case study:River Wensum Rehabilitation Project - Bintree

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Location: 52° 46' 52.77" N, 0° 57' 38.38" E

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Project overview

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Status	Complete
Project web site
Themes	Flood risk management, Habitat and biodiversity, Hydromorphology, Social benefits, Water quality
Country	England
Main contact forename	Nick
Main contact surname	Elbourne
Main contact user ID	User:NickRRC
Contact organisation	River Restoration Centre
Contact organisation web site	http://www.therrc.co.uk
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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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	Bintree
WFD water body codes	GB105034051100
WFD (national) typology	R19
WFD water body name
Pre-project morphology	Single channel
Reference morphology	Single channel
Desired post project morphology
Heavily modified water body	Yes
National/international site designation	EU - Special Area of Conservation
Local/regional site designations
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology	Groundwater
Dominant substrate	Gravel
River corridor land use	Intensive agriculture
Average bankfull channel width category	2 - 5 m
Average bankfull channel width (m)
Average bankfull channel depth category	0.5 - 2 m
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)	1500 m1.5 km <br />150,000 cm <br />
Project started	2000/08/01
Works started
Works completed
Project completed	2010/10/01
Total cost category	50 - 100 k€
Total cost (k€)	73 k€73,000 € <br />
Benefit to cost ratio
Funding sources

Cost for project phases

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

Reasons for river restoration

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Mitigation of a pressure	Agriculture
Hydromorphology	Channel pattern/planform, Quantity & dynamics of flow, Connection to groundwaters
Biology	Invertebrates
Physico-chemical
Other reasons for the project	Flood risk management, Community demand

Measures

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Structural measures
Bank/bed modifications	bed raising
Floodplain / River corridor
Planform / Channel pattern	channel narrowing
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other	Participation in maintenance

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
	Before measures	After measures	Qualitative	Quantitative
Invertebrates: Taxonomic composition	Yes	Yes

Physico-chemical quality elements

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quality elements

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

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
http://therrc.co.uk/case studies/wensum-%20bintree.pdf	River Restoration Centre Case Study 2009
http://therrc.co.uk/case studies/wensum%20at%20bintree%20final.pdf	River Restoration Centre Case Study 2010

Supplementary Information

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