Case study:Restoring Brent Rivers and Communities

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Location: 51° 33' 47.34" N, 0° 15' 39.59" W
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Project overview

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Status Complete
Project web site http://https://www.thames21.org.uk/brent-rivers-and-communities/
Themes Habitat and biodiversity, Hydromorphology, Social benefits, Urban
Country England
Main contact forename Carolina
Main contact surname Pinto
Main contact user ID User:Carolfp10
Contact organisation Thames 21
Contact organisation web site http://www.thames21.org.uk
Partner organisations Greggs Foundation, Brent Council, The Rivers Trust
This is a parent project
encompassing the following
projects
Volunteer Photographing river Brent at Quainton Street Open Space

Project summary

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The Restoring Brent Rivers and Communities project engaged local people in areas of high social deprivation in Barnet, Brent, Ealing and Harrow. Together we restored and improved sections of the river habitats with the aim to also increase community well-being. We increased access to the river and its paths, collaborating with local communities on practical river repair workshops, celebrating and sharing successes.

We aimed at the rewilding of sections of the river Brent by creating new wetlands, planting native aquatic plants, removing wooden toe-board and helping the river meander more naturally in its channel.

Monitoring surveys and results

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Lessons learnt

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Image gallery


LW Deflectors.JPG
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Large wood Installation.JPEG
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Catchment and subcatchment

Catchment

River basin district Thames
River basin London

Subcatchment

River name Brent (below Silk stream down to the Thames)
Area category 100 - 1000 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 130130 m <br />0.13 km <br />13,000 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Suburban
Waterbody ID GB106039023590



Site

Name Quainton Street Open Space
WFD water body codes GB106039023590
WFD (national) typology
WFD water body name Brent (below Silk stream down to the Thames)
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body Yes
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

Reach length directly affected (m) 550550 m <br />0.55 km <br />55,000 cm <br />
Project started 2019/01/01
Works started 2020/09/01
Works completed 2021/03/15
Project completed 2022/03/31
Total cost category 50 - 100 k€
Total cost (k€)
Benefit to cost ratio
Funding sources Greggs Foundation and GLA

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 Urbanisation
Hydromorphology Channel pattern/planform
Biology Fish: Abundance, Fish: Species composition, Invertebrates: Abundance, Invertebrates: Diversity
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications Removal of bank reinforcements
Floodplain / River corridor Restoration of pond, Maintenance of riparian vegetation
Planform / Channel pattern
Other
Non-structural measures
Management interventions Litter picking
Social measures (incl. engagement) Community Education, Community Events, Community Litter-picking work, Community involvement
Other


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
[[]] No No No No No

Biological quality elements

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

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

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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