Case study:Strategic Framework for Restoration of the River Avon (SFfRRA)

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Location: 51° 3' 40.21" N, 1° 47' 37.44" W

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Project overview

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Status	In progress
Project web site	http://www.hampshireavoncatchmentpartnership.org.uk/projects
Themes	Environmental flows and water resources, Fisheries, Flood risk management, Habitat and biodiversity, Hydromorphology, Water quality
Country	England
Main contact forename	Mike
Main contact surname	Porter
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.gov.uk/government/organisations/environment-agency
Partner organisations	Natural England, Wessex Water, Wiltshire Fishery Association, Wessex Chalk Streams Project, Wessex Chalk Streams and Rivers Trust
This is a parent project encompassing the following projects	Charlton St Peter A 8, France Farm (Phase 1) A 9, Gunville Phase I, Longstreet A 91a, West Amesbury

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Project summary

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In 2009 the Strategic Framework for the Restoration of the River Avon (SFfRRA) was developed in partnership with Natural England, Wessex Water, the Wiltshire Fisheries Association and the Wessex Chalk Streams Project. The SFfRRA is the guide for the restoration of the Hampshire Avon and has identified options for restoration.

The Strategic Restoration of the River Avon (SRRA) was put in place by the SFfRRA, with the ultimate goal of moving towards a more naturally-functioning system that is able to adjust and respond to changes without constant management.

The Strategic Framework for Restoration of the River Avon (SFfRRA) aims to provide a plan for the physical restoration of the whole river throughout the designated length of the River Avon System and River Till SSSIs. SFfRRA is one of a number of projects and strategies that seek to address specific issues within the river and its catchment. This review and survey of the geomorphological pressures seeks to identify the nature and scale of the physical changes and the impacts that they potentially have on ecological condition.

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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: River Avon Stream project, Salisbury Avon Restoration Project, Salmonid, coarse fish and wetland bird habitat and flood plain linkage project, Hampshire Avon Site Edit site Name WFD water body codes GB108043015840 WFD (national) typology WFD water body name Hampshire Avon (Lower) 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 2009/01/01 Works started Works completed Project completed 2022/01/01 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 Historic flood alleviation, Barriers to fish migration, Urbanisation, Land drainage Hydromorphology Width & depth variation, Channel pattern/planform Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Weir removal/modification for easement of fish passage, Bed raising, Creation of berms, Embankment lowering Floodplain / River corridor Fencing, Tree planting Planform / Channel pattern Re-meandering, Channel narrowing, Introducing large woody debris, Adding sinuosity, Enhancing flow diversity, Re-instatement of old course 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 http://www.wiltshirewildlife.org/what-we-do/Avon Wiltshire Wildlife Trust - Restoration Directory for River Avon Supplementary Information Edit Supplementary Information