Case study:Harrow Lodge Park

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Location: 51° 33' 40.29" N, 0° 12' 36.61" E

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Project overview

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Status	Planned
Project web site
Themes	Fisheries, Habitat and biodiversity
Country	England
Main contact forename	Becca
Main contact surname	O’Shea
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.gov.uk/government/organisations/environment-agency
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

The Ravensbourne before restoration

Project summary

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Flood plain restoration is progressing (NGR: TQ5283586428).
Proposed works:
- Deculverting at downstream end at lakes, removing concrete
- Removal of lido steps
The Ravensbourne has been heavily modified, the downstream section deculverted. It runs through the middle of the park and is the main feature. It’s currently an eyesore and parts of it provide very little habitat for wildlife. The project is listed on the Green Grid list. The GLA support this project and contributed to the funding for the scoping report.

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Thames River basin Roding, Beam and Ingrebourne Subcatchment River name Rom / Beam (from Ravensbourne confluence to Thames) Area category Less than 10 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 1818 m <br />0.018 km <br />1,800 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Suburban Waterbody ID GB106037028100 Other case studies in this subcatchment: Dagenham Washlands Phase 2, Haynes Park Site Edit site Name WFD water body codes GB106037028100 WFD (national) typology WFD water body name Rom / Beam (from Ravensbourne confluence to Thames) 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 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 Edit project background Reach length directly affected (m) 820 m0.82 km <br />82,000 cm <br /> Project started 2008/01/01 Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Green Grid 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Channel pattern/planform, Width & depth variation Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Deculverting, Removing of concrete structures Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information