Case study:Mayes Brook River Restoration, Mayesbrook Park, East London

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Location: 51° 32' 37.70" N, 0° 6' 36.91" E

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Project overview

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Status	Complete
Project web site	http://www.therrc.co.uk/sites/default/files/projects/2_mayesbrook.pdf
Themes	Economic aspects, Flood risk management, Habitat and biodiversity, Hydromorphology, Monitoring, Social benefits
Country	England
Main contact forename	Sarah Jane
Main contact surname	Scott
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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This river restoration project was the UK's first climate change park. It transformed a 45ha park in Dagenham in east London to showcase how greenspace can help a community cope with the risk of climate change. The Mayes Brook, which formerly lay in a concrete channel, has been brought out into the park along its 1.6km length. The scheme involved river restoration, increased floodplain storage, numerous sustainable urban drainage areas and a backwater in the middle part of the park. These have contributed to an improvement in the wildlife and recreational value of the park. The landscaping in the middle part of the park has increased flood storage by 1ha to naturally and safely store the anticipated increase in floodwaters expected in future. Modelling shows flood risk has been reduced locally within the park and in neighbouring residential streets. The lifetime value of restoring the site across the 4 ecosystem service categories yields a total of calculated benefits of around £27 million. This is compared to the estimated £3.8 million cost of the whole Mayesbrook Park restoration scheme, including the river restoration works. This produces a lifetime benefit-to-cost ratio of £7 of benefits for every £1 invested.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Mayes Brook WFD water body codes WFD (national) typology WFD water body name 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) Project started 2008 Works started Works completed Project completed Total cost category Total cost (k€) £750k"£" is not declared as a valid unit of measurement for this property. Benefit to cost ratio Funding sources London Borough of Barking and Dagenham, Environment Agency, Thames Rivers Trust, RSA (insurance), Natural England, Greater London Authority, SITA Trust, London Wildlife Trust, Defra 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 Flood risk management Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Deculverting Floodplain / River corridor Floodplain creation, Sustainable urban drainage ponds (SUDs), Creation of backwaters 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