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.

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Image gallery

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Weir prior to works

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this 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 Edit 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 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 Works started Works completed Project completed Total cost category 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 Edit reasons for restoration Mitigation of a pressure Barriers to fish migration Hydromorphology Biology Fish Physico-chemical Other reasons for the project Measures Edit 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 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