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

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Location: 51° 32' 38", 0° 6' 37"
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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



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)
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Average bankfull channel depth (m)
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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

Mitigation of a pressure Flood risk management
Hydromorphology
Biology
Physico-chemical
Other reasons for the project


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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
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Physico-chemical quality elements

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Any other monitoring, e.g. social, economic

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative


Monitoring documents



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Additional links and references

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Supplementary Information

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