Case study:River Quaggy- Chinbrook meadows

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Location: 51° 27' 29.21" N, 0° 0' 56.48" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Social benefits, Water quality
Country	England
Main contact forename
Main contact surname
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site
Partner organisations
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	River Quaggy
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology	Straight, Revetments
Reference morphology	Sinuous
Desired post project morphology
Heavily modified water body	true
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology	Artificially regulated, Quick run-off
Dominant substrate	Bedrock
River corridor land use	Urban
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	0.3
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)	300 m0.3 km <br />30,000 cm <br />
Project started	2002/03/01
Works started
Works completed	2002/10/01
Project completed
Total cost category
Total cost (k€)	100 k€100,000 € <br />
Benefit to cost ratio
Funding sources	Environment Agency

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	Riparian development
Hydromorphology	Quantity & dynamics of flow, Channel pattern/planform
Biology	Invertebrates, Macrophytes
Physico-chemical	Oxygen balance
Other reasons for the project	Landscape enhancement, Flood risk management

Measures

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Structural measures
Bank/bed modifications	Removal of revetments, Introduction of gravels, Planting of native species
Floodplain / River corridor	Removal of embankments, Creation of wetlands, Creation of ponds
Planform / Channel pattern	Introduction of sinuosity
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other	Information provision, Consultation

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	Yes	Yes		Yes		Improvement
Macrophytes	Yes	Yes		Yes		Improvement

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://http://en.wikipedia.org/wiki/Chinbrook Meadows	Wikipedia link

Supplementary Information

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