Case study:France Farm (Phase 1) A 9

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Location: 51° 18' 7.22" N, 1° 48' 48.04" W

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Project overview

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Status	Complete
Project web site	http://www.environment-agency.gov.uk/homeandleisure/wildlife/119594.aspx
Themes	Environmental flows and water resources, Fisheries, Habitat and biodiversity, Hydromorphology
Country	England
Main contact forename	Mike
Main contact surname	Porter
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.environment-agency.gov.uk
Partner organisations	Natural England
Parent multi-site project	Case_study:Strategic Framework for Restoration of the River Avon (SFfRRA)
This is a parent project encompassing the following projects	No

Project picture

Project summary

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This reach is located at France Farm and is 907m in length. The reach includes France Farm hatch, which consist of 2 hatch boards (recently replaced), and causes a major barrier to fish migration and the impoundment extends upstream for around 1km. There is also a stocked fishing pond which is maintained by an offtake from the impounded upstream river. The project involved lowering the level of an existing online pond which allowed for the full and permenant opening of all the hatches on the main river. The proposed works on the main river upstream of the structre will be delayed until observations of any geomorphological change on the river.

Monitoring surveys and results

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No monitoring was undertaken. Observation of morphological change upstream of the opened hatches to determine level of future in channel works required.

Lessons learnt

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River before hatches opened

River after hatches opened

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 (West) Area category 10 - 100 km² Area (km2) Maximum altitude category 200 - 500 m Maximum altitude (m) 202202 m <br />0.202 km <br />20,200 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Arable and Horticulture Waterbody ID GB108043022370 Other case studies in this subcatchment: Charlton St Peter A 8 Site Edit site Name WFD water body codes GB108043022370 WFD (national) typology WFD water body name 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 2013/09/01 Works started Works completed Project completed 2013/10/01 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 Hydromorphology Biology hatches acting as a barrier to fish migration Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern opening up of hatches to reconnect reaches of the river 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