Case study:Mill Road Weir

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Location: 51° 26' 35.67" N, 0° 21' 25.84" W

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Project overview

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Status	Planned
Project web site
Themes	Fisheries, Flood risk management, Habitat and biodiversity
Country	England
Main contact forename	Melanie
Main contact surname	Challis
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 Richmond upon Thames, FORCE: Friends of the River Crane Environment
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Removal or modification of Mill Road Weir, in conjunction with the weir on the associated side loop, to improve flows both on the main channel and side loop which could improve a significant length of river. Benefit in terms of fish passage. Improvement in flow for the benefit of aquatic plants such as ranunculus, and to allow for scour of gravels for the benefit of fish and invertebrates. Planting marginal vegetation.

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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 Crane (including part of the Yeading Brook) Area category 10 - 100 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 5151 m <br />0.051 km <br />5,100 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Suburban Waterbody ID GB106039023030 Other case studies in this subcatchment: Big Yellow, Crane Park, Cranford Park Phase 2, Hospital Bridge Road, Re-connecting Meanders at Cranebank on the River Crane, The Mid River Crane - Aquatic Refuge Identification Plan Site Edit site Name WFD water body codes GB106039023030 WFD (national) typology WFD water body name Crane (including part of the Yeading Brook) 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 2008/01/01 Works started Works completed Project completed Total cost category 50 - 100 k€ Total cost (k€) Benefit to cost ratio Funding sources FRM Capital Budget 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 Quantity & dynamics of flow, Substrate conditions, Width & depth variation Biology Fish, Invertebrates, Macrophytes 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