Case study:Dagenham Washlands Phase 2

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Location: 51° 31' 49.30" N, 0° 9' 55.58" E

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Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Flood risk management, Habitat and biodiversity, Social benefits
Country	England
Main contact forename	Richard
Main contact surname	Hellier
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

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Project summary

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Realignment of the Wantz through the floodplain in the open space away from the existing flood embankment and creation of more natural banks and profile along the River Beam where space allows. Introduction of meanders and backwaters will increase habitat and add interest to the park for the local community. Some wetlands have recently been created in the area as part of the Washland FAS project.
More detail on size: 58ha & 12ha of new BAP, 150m re-meandering (Wantz), 600m reprofiling and 300m in channel features (Beam). The Wantz Stream has been straightened and runs towards the edge of the space rather than being the visual focal point. Realignment would provide opportunities for wetland creation. The wetlands created as part of the washlands FAS scheme will help to inform the creation of any new habitats.

Monitoring surveys and results

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Pre-project data
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Lessons learnt

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The project won the CIWEM (Chartered Institute of Water and Environment Management) Living Wetland Award 2011 - the project showed what can be achieved when public, private and community groups work together. The project has helped to enhance biodiversity (12 hectares of new habitats have been created), improve flood storage capacity and provide a community resource.

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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: Harrow Lodge Park, Haynes Park 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) 300 m0.3 km <br />30,000 cm <br /> Project started 2008/01/01 Works started Works completed 2011/01/01 Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources European Regional Development Fund Grant, EA, Veoila, Play England grant, Home and Communities Agency Parklands endowment, London Boroughs of Bark&Dag and Havering, Design for London, Access to Nature Grant See Main 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 Riparian development Hydromorphology Channel pattern/planform Biology Physico-chemical Other reasons for the project Community demand 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