Case study:Wyndham Park, Grantham

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Location: 52° 55' 5.49" N, 0° 38' 20.14" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Spatial planning, Urban
Country	England
Main contact forename	Matt
Main contact surname	Parr
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.gov.uk/government/organisations/environment-agency
Partner organisations	South Kesteven District Council
Parent multi-site project	Upper Witham Restoration
This is a parent project encompassing the following projects	No

Project after completition

Project summary

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The 2016 Grantham Urban Rivers and Wetlands Plan, launched in 2016, identified numerous opportunities for river habitat improvements through the town, and Wyndham Park was selected as a pilot project to demonstrate the benefits of urban river restoration to the people of Grantham and to show that projects like this, when carefully designed, do not increase flood risk.

The overall objectives of the Wyndham scheme were to improve the flow, reduce sedimentation and create habitats for river life, including native brown trout and white-clawed crayfish, as wells as insect pollinators. A narrower, more sinuous, 2-stage channel would increase the flow and reduce the accumulation of fine sediment on the river bed.

Monitoring surveys and results

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Trout Redd surveying of the gravels have been very positive with good numbers observed on the gravels installed.

Lessons learnt

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In August 2017 the flood resilience of the project was immediately demonstrated when heavy overnight rain caused the river to rise and temporarily flood the berms. Soon after completion chub were observed on the fresh gravel bed and in winter 2017/18 brown trout redds (spawning scrapes) were located. The access berm was an immediate success and provided the venue for river studies at the World Rivers Day event in September 2017.

Image gallery

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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