Case study:Manor Park

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Location: 51° 27' 20", -0° 0' 11"
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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

Catchment

River basin district Thames
River basin London

Subcatchment

River name Quaggy
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 135
135 m
0.135 km
13,500 cm
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Suburban
Waterbody ID GB106039023290



Other case studies in this subcatchment: Colfes School, Lidl, Manor House Gardens, Manor House Gardens Gauging Station, Mottingham Farm, Quaggy Flood Alleviation Scheme, Quaggy channel improvements, River Quaggy- Chinbrook meadows, Sutcliffe Park, Sydenham Cottages Nature Reserve


Site

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

Reach length directly affected (m)
Project started 2008/01/01
Works started
Works completed
Project completed 2012/04/28
Total cost category
Total cost (k€)
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
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring



Reasons for river restoration

Mitigation of a pressure Invasive species
Hydromorphology Width & depth variation
Biology
Physico-chemical Temperature
Other reasons for the project Overshaded channel


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor Vegetation management
Planform / Channel pattern
Other
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

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

Biological quality elements

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

Physico-chemical 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

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


Monitoring documents



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Supplementary Information

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