Case study:Platt Brook Restoration

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Location: 52° 28' 4", -1° 46' 18"
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Project overview

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Status Complete
Project web site http://www.bbcwildlife.org.uk/nia/projects/platt-brook-restoration-project
Themes Social benefits, Water quality, Urban
Country England
Main contact forename Will
Main contact surname Groves
Main contact user ID User:Wgroves
Contact organisation Environment Agency
Contact organisation web site http://www.environment-agency.gov.uk
Partner organisations Birmingham City Council, Environment Agency, Birmingham and Black Country NIA
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Project picture

Project summary

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The project aims were to improve the aesthetics, water quality and biodiversity of the Platt Brook in Sheldon, Birmingham. The focus of the project was a section of the brook flowing through public land surrounded by high density housing.

Before the project, the brook was much neglected and suffered from silt build up, flytipping and pollution from misconnections and other sewer misuse.

During the restoration works silt was removed and its banks were pulled back to recreate a more natural river channel. It is hoped that the scheme will help the brook to self-cleanse and re-oxygenate, providing much needed urban habitat for wildlife and making the brook more accessible for people.

The project was delivered in 2013.

Since the end of the project the brook has been adopted by a community based WatersideCare group - http://www.keepbritaintidy.org/watersidecare/689

This project was delivered by the Birmingham Brooks Partnership and is a sister project to the Short Heath Brook project - http://restorerivers.eu/wiki/index.php?title=Case_study%3AShort_Heath_Brook_Project

Engagement with local community leading to adoption by WatersideCare group.

Monitoring surveys and results

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Water quality monitoring is showing improvements in dissolved oxygen since the restoration work - see DO chart below.

Invertebrate monitoring undertaken in Spring 2012 before works commenced gave a very low BWMP score of 7/200. Biological sampling will be repeated in Spring/Summer 2014.

Changes in public opinion of the brook prior to and after the restoration scheme have also been recorded - see survey results below.

Lessons learnt

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Image gallery


Platt Brook before restoration
Platt Brook bed before restoration
Platt Brook bed after restoration
Platt Brook Dissolved Oxygen results
Platt Brook restoration resident survey
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Catchment and subcatchment

Catchment

River basin district Severn
River basin Shropshire Middle Severn

Subcatchment

River name Platt Bk - source to conf R Tern
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 194
194 m
0.194 km
19,400 cm
Dominant geology Siliceous
Ecoregion Great Britain
Dominant land cover Arable and Horticulture
Waterbody ID GB109054050210



Site

Name
WFD water body codes GB109054050210
WFD (national) typology
WFD water body name Platt Bk - source to conf R Tern
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

Reach length directly affected (m)
Project started
Works started
Works completed
Project completed
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Total cost (k€)
Benefit to cost ratio
Funding sources

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
Hydromorphology
Biology
Physico-chemical This watercourse has been subject to sources of urban diffuse pollution such as from misconnections and fly-tipping.
Other reasons for the project The project aimed to improve the look of and access to the watercourse for the benefit of the local community.


Measures

Structural measures
Bank/bed modifications Restoring gravel bed
Floodplain / River corridor
Planform / Channel pattern Meandering channel
Other Removal of accumulated debris and silt.
Non-structural measures
Management interventions
Social measures (incl. engagement) Community involvement
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
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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