Case study:Firs Farm Wetlands

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Location: 51° 37' 41.59" N, 0° 5' 12.88" W

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Project overview

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Status	In progress
Project web site
Themes	Environmental flows and water resources, Flood risk management, Habitat and biodiversity, Monitoring, Social benefits, Water quality, Urban
Country	England
Main contact forename	Ian
Main contact surname	Russell
Main contact user ID
Contact organisation	London Borough of Enfield
Contact organisation web site	http://enfield.gov.uk/
Partner organisations	Environment Agency, Thames Water, Greater London Authority, Thames 21, Friends of Firs Farm
Parent multi-site project	Case_study:Rewilding Enfield's Urban Rivers
This is a parent project encompassing the following projects	No

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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 Pymmes Brook (Salmons Brook to Lee, includes Part of Lee Navigation B) Area category 10 - 100 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 2626 m <br />0.026 km <br />2,600 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Urban Waterbody ID GB106038027910 Other case studies in this subcatchment: Pymmes Park Wetlands Site Edit site Name Firs Farm Wetlands WFD water body codes UKGB106038027910 WFD (national) typology WFD water body name Pymmes Brook (Salmons Brook to Lee, includes Part of Lee Navigation B) Pre-project morphology Closed culvert Reference morphology Desired post project morphology Heavily modified water body Yes National/international site designation Local/regional site designations Protected species present No Invasive species present No Species of interest Dominant hydrology Surface Water Runoff, fluvial Dominant substrate Clay, Gravel River corridor land use Parklands, Grassland 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 Works started Works completed Project completed 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 Flood risk management, Poor Water Quality Hydromorphology Quantity & dynamics of flow Biology Physico-chemical Oxygen balance, Nutrient concentrations, PH, Biological Oxygen Demand, Total Suspended Solids, Heavy Metals, Hydrocarbons Other reasons for the project Improve Public Space, Improve Linkages, Improve Health and Wellbeing of local park users Measures Edit Measures Structural measures Bank/bed modifications Deculverting, wetland creation, ponds and pools inside the wetland, creation of a new floodplain parallel to the river Floodplain / River corridor Creation of wetlands, Creation of wet woodland, Creation of pond, Creation of side channel, Deculverting, Extensive planting, Sustainable urban drainage ponds (SUDs) Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) education; public amenity and perception, Community involvement, Work with schools and communities 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