Case study:Sandscaping

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Location: 51° 59' 29.41" N, 4° 20' 21.54" E

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Project overview

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Status	Complete
Project web site	http://www.therrc.co.uk//sites/default/files/files/riverwiki/65_sandengine.pdf
Themes	Economic aspects, Flood risk management, Habitat and biodiversity, Monitoring, Social benefits
Country	Netherlands
Main contact forename	Jaap
Main contact surname	Flikweert
Main contact user ID
Contact organisation	Royal HaskoningDHV
Contact organisation web site	http://www.royalhaskoningdhv.com/
Partner organisations	Rijkswaterstaat, Province of Zuid-Holland, The Crown Estate, Van Oord, HR Wallingford, Arup
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Sandscaping is an innovative coastal management approach, inspired by the Dutch Zandmotor (Sand Engine) (Photo 1 and Map 1)). It involves placing a large volume of sediment to benefit one location, designing it so that natural processes move the sediment to other places where it is needed. In the right place and if designed well, the large volume and concentrated placement can reduce costs, while the scale and dynamic nature can generate benefits for amenity, tourism and habitats. A partnership of organisations has been exploring the implementation of Sandscaping in the UK. There is a long list of high potential sites currently being developed with local partners (Map 2). The Dutch Zandmotor is a nourishment of 21.5 million m3, intended to last for 20 years. Monitoring over the first 5 years shows it is likely to function longer, up to 30 years. Economies of scale reduced the cost per m3 by about 50% from normal scale nourishments. In addition, the Zandmotor has become the most popular location for kite surfing in the Netherlands.

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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€) £60m"£" is not declared as a valid unit of measurement for this property. Benefit to cost ratio Funding sources Rijkswaterstaat, Province of Zuid-Holland 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 and coastal erosion protection Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Sandscaping 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