Case study:Wandle River Restoration Project: Hackbridge

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Location: 51° 22' 37.67" N, 0° 9' 37.40" W

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Project overview

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Status	In progress
Project web site	http://www.wandletrust.org/wp-content/uploads/2014/07/Culvers_Island_Info_for_Website_pdf.pdf
Themes	Habitat and biodiversity, Hydromorphology, Social benefits
Country	England
Main contact forename	Tim
Main contact surname	Longstaff
Main contact user ID	User:JoshRRC
Contact organisation	Wandle Trust
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Project picture

Project summary

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This project is one of four sites in the Wandle River Restoration Project being delivered through the Defra Catchment Restoration Fund. Four weirs were removed and 125m of river narrowed using bioengineering techniques. An island was regraded and a backwater created with 250 tonnes of gravel used to enhance geomorphology and habitat along with 6000 plants planted by volunteers. Designs were developed based on detailed 2D flood modelling undertaken in conjunction with cbec eco-engineering. Practical works were deliverd during summer 2014 with appointed contractors, Cain Bioengineering.

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Lessons learnt

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Challenges: - Very urban nature of the site. Complex flood modelling and design was required. - Multiple underground utilities which had to be identified and avoided during the works. - Many and varied stakeholder needs and opinions.

Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present 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) Project started Works started Works completed Project completed 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications 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