Case study:Lea Bridge Waterway Wall Improvements

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Location: 51° 33' 44.40" N, 0° 2' 50.32" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	England
Main contact forename	Leela
Main contact surname	O’Dea
Main contact user ID
Contact organisation
Contact organisation web site
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Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Enhance piled structure with hanging basket style gabions specifically designed to fit within the piled recess. Install 20 sandmartin nesting tubes in the wall through bespoke design for the project. The waterway wall needed replacing and there was no option for break out.

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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 London Subcatchment River name Lee (from Tottenham Locks to the Tideway) Area category 1000 - 10000 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 141141 m <br />0.141 km <br />14,100 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Urban Waterbody ID GB106038077852 Other case studies in this subcatchment: Blackhorse Lane Waterfront Park, Dagenham Brook de-silting, Essex Wharf, Hackney Marsh recreation grounds, Hackney Marshes - Wick Field recreation ground, Lee Navigation by Walthamstow Marshes, Springfield Marina, Tottenham Lock Floating Ecosystem 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) 20 m0.02 km <br />2,000 cm <br /> Project started 2010/01/01 Works started Works completed 2010/01/01 Project completed Total cost category 1 - 10 k€ Total cost (k€) Benefit to cost ratio Funding sources British Waterways major works programme 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