Case study:Manor Park

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Location: 51° 27' 20.27" N, 0° 0' 10.52" W

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Project overview

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Status	Complete
Project web site
Themes	Flood risk management
Country	England
Main contact forename	Toni
Main contact surname	Scarr
Main contact user ID	User:Ascarr
Contact organisation	Environment Agency
Contact organisation web site	http://www.environment-agency.gov.uk
Partner organisations
Parent multi-site project	Case_study:Quaggy Flood Alleviation Scheme
This is a parent project encompassing the following projects	No

Riverbank Management on the Quaggy, Source: natureconservationlewisham.co.uk

Project summary

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Manor Park was redesigned to tackle the Japanese knotweed on site, rather than dumping it in a hazardous landfill site hundreds of miles away. This invasive species can be a huge problem as it grows very quickly and crowds out all other plants and wildlife if left unmanaged.

Also at Manor Park, wetland areas and wildflower meadows have been created. We’ve updated and improved the play area. And it is now much easier for people to access the river itself

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	Manor Park
WFD water body codes	GB106039023290
WFD (national) typology	Calcareous
WFD water body name	Quaggy
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body	Yes
National/international site designation
Local/regional site designations
Protected species present	No
Invasive species present	Yes
Species of interest	Japanese knotweed (Fallopia japonica)
Dominant hydrology
Dominant substrate
River corridor land use	Urban
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	2008/01/01
Works started
Works completed
Project completed	2012/04/28
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Total cost (k€)
Benefit to cost ratio
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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	Invasive species
Hydromorphology	Width & depth variation
Biology
Physico-chemical	Temperature
Other reasons for the project	Overshaded channel

Measures

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Structural measures
Bank/bed modifications
Floodplain / River corridor	Control of riparian vegetation
Planform / Channel pattern
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Non-structural measures
Management interventions
Social measures (incl. engagement)	Citizen participation in the restoration project, Awareness raising
Other	Participation in works

Monitoring

Hydromorphological quality elements

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quality elements

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

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Image gallery

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Additional links and references

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Supplementary Information

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