Case study:Clayton Vale

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Location: 53° 29' 30.04" N, 2° 10' 36.62" W
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Project overview

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Status In progress
Project web site
Themes Flood risk management, Habitat and biodiversity, Hydromorphology, Social benefits, Urban
Country England
Main contact forename Oliver
Main contact surname Southgate
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site
Partner organisations
Parent multi-site project

Case_study:River Irwell Restoration Project

This is a parent project
encompassing the following
projects
No
weir removal within Clayton Vale

Project summary

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Manchester City Council identified that the Clayton Vale portion of the study area (east of Bank Bridge Road) was occupied by a historical landfill site, which was used for the disposal of ash cinders from the Stuart Street Power Station and as a municipal landfill. Consultants Atkins are in the process of undertaking ground investigations to determine leachate, groundwater and soil contamination including waste characterisation testing to determine the status of these materials and to allow an effective remediation strategy to be developed for the any river channel/corridor restoration works and to prevent the creation of new pollutant linkages or the exacerbation of existing ones, in upstream demonstration area.

It will be a huge achievement if we can restore this most heavily degraded section of waterbody, but the aspiration is to create a safe riverine environment for all, reconnect and integrate the river corridor back with the adjoining greenspace and public parks, and restore the river so that it is capable of supporting diverse aquatic fauna once more.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Weir prior to works
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Catchment and subcatchment

Catchment

River basin district North West
River basin Irwell

Subcatchment

River name River Medlock (Lumb Brook to Irwell)
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 121121 m <br />0.121 km <br />12,100 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Urban
Waterbody ID GB112069061152



Other case studies in this subcatchment: Philips Park, River Irwell Restoration Project


Site

Name
WFD water body codes GB112069061152
WFD (national) typology
WFD water body name River Medlock (Lumb Brook to Irwell)
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
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Project background

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Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
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Monitoring



Reasons for river restoration

Mitigation of a pressure Barriers to fish migration
Hydromorphology
Biology Fish
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications Weir removal
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents



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Supplementary Information

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