Case study:Ashlone Wharf FCRM scheme

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Location: 51° 28' 17.57" N, 0° 13' 22.45" W

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Project overview

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Status	In progress
Project web site
Themes	Fisheries, Flood risk management, Habitat and biodiversity
Country	England
Main contact forename	Dave
Main contact surname	Webb
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.gov.uk/government/organisations/environment-agency
Partner organisations	London Borough of Hammersmith & Fulham
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Planned objectives:
• Potential to improve conveyance and reduce sedimentation and improve the ecology of the Beverley Brook.
• Potential to undertake river restoration in areas where the Beverley Brook has previously been re-sectioned or modified, and where it currently flows through areas of open space.
• Potential to remove areas of old or redundant bank protection/structures and re-naturalise the channel banks.
• Potential to undertake habitat creation or enhancement works.

Objectives carried out (2012):
Flood and coastal risk management scheme to repair tidal sluice incorporating fish pass and reedbed.

At the lower section of Beverley Brook the flow is diverted into a series of culvert which outfall into the Thames and only 20% of the flow continues down the main channel. As a result the flows are low and there is a lot of siltation and lack of inchannel processes. Drivers: Biodiversity Action Plan, Water Framework Directive.

Monitoring surveys and results

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Lessons learnt

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Improvement of structural operability enables review of operation regimes to minimise the requirement for further improvement works. Whilst replacement of existing structures is not a sustainable measure, the operating regime that follows increases the long term condition of the river and structure.

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 Thames River basin London Subcatchment River name Beverley Brook (Motspur Park to Thames) and Pyl Brook at West Barnes Area category 1000 - 10000 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 172172 m <br />0.172 km <br />17,200 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Suburban Waterbody ID GB106039022850 Other case studies in this subcatchment: Anton Crescent Wetlands Regeneration, Barn Elms Sports Ground, Barn Elms Wetland Centre, South West London, Barnes Common, Barnes Common improvements, Beverley Brook Flow control structures, Beverley Brook d/s of Rock’s Lane, Beverley Park, Cuddington Park, Horne Way Weir... further results Site Edit site Name WFD water body codes GB106039022850 WFD (national) typology WFD water body name Beverley Brook (Motspur Park to Thames) and Pyl Brook at West Barnes 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) 100 m0.1 km <br />10,000 cm <br /> Project started 2011/05/01 Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Environment Agency: Flood and coastal risk management 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 Modify structures to improve fish passage Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Installation of a fish pass 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