Case study:River Avon Stream project

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Location: 50° 48' 39.60" N, 1° 48' 32.40" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Monitoring, Water quality
Country	England
Main contact forename	Jenny
Main contact surname	Wheldon
Main contact user ID
Contact organisation	Natural England
Contact organisation web site
Partner organisations
This is a parent project encompassing the following projects	River Avon at East Chisenbury

Avon at Amesbury, post-restoration works in 2009

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district South West River basin Hampshire Avon Subcatchment River name Hampshire Avon (Lower) Area category 1000 - 10000 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 152152 m <br />0.152 km <br />15,200 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Improved grassland Waterbody ID GB108043015840 Other case studies in this subcatchment: Salisbury Avon Restoration Project, Salmonid, coarse fish and wetland bird habitat and flood plain linkage project, Hampshire Avon, Strategic Framework for Restoration of the River Avon (SFfRRA) Site Edit site Name River Avon WFD water body codes GB108043015840 WFD (national) typology WFD water body name Hampshire Avon (Lower) Pre-project morphology Single channel, Straight, Embanked Reference morphology Sinuous, Pool-riffle Desired post project morphology Heavily modified water body Yes National/international site designation EU - Special Area of Conservation Local/regional site designations Protected species present No Invasive species present No Species of interest Dominant hydrology Quick run-off Dominant substrate Bedrock River corridor land use Urban, Extensive agriculture Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) Average bankfull channel depth category 5 - 10 m 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 2002/12/01 Works started Works completed Project completed Total cost category Total cost (k€) 1000 k€1,000,000 € <br /> Benefit to cost ratio Funding sources European Commission LIFE-Nature programme, Heritage Lottery Fund (HLF). 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 Reservoir impoundment Hydromorphology Channel pattern/planform, Width & depth variation, Quantity & dynamics of flow Biology Fish: Abundance, Invertebrates, Macrophytes Physico-chemical Other reasons for the project Bank erosion, Habitat enhancement Measures Edit Measures Structural measures Bank/bed modifications Planting, Depth variation, Soft erosion solutions, Weir removal Floodplain / River corridor Creation of wetland, Connection to wider floodplain Planform / Channel pattern Adding sinuosity Other Non-structural measures Management interventions Social measures (incl. engagement) Other Consultation, Participation in design 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 Fish: Abundance Yes Yes Awaiting results Invertebrates Yes Yes Awaiting results Macrophytes Yes Yes Awaiting results 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