Case study:River Gaywood – Seven Sisters Drain

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Project overview

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Status	Complete
Project web site	http://www.norfolkriverstrust.org/
Themes	Habitat and biodiversity, Social benefits
Country	England
Main contact forename	the
Main contact surname	RRC
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Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Norfolk Rivers Trust, King’s Lynn Internal Drainage Board and the Borough Council have teamed up to improve an abandoned area of King’s Lynn. Seven Sisters Drain, which runs behind the football club has long been abandoned becoming a silted, overgrown dumping ground, being filled with everything from crisp packets to sofas. Together we are working to transform this forgotten corner, clearing the overgrown vegetation and cutting a new channel for the water to move through. This will then be planted with a collection of native plants to improve the water quality and attract insects and amphibians to this new wildlife haven.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present 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 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 Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications 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