Case study:Hightown Sand Dune Restoration

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Location: 53° 31' 37.65" N, 3° 4' 13.59" W

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Project overview

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Status	In progress
Project web site	http://www.therrc.co.uk/sites/default/files/projects/59_hightown.pdf
Themes	Flood risk management, Habitat and biodiversity, Monitoring, Social benefits
Country	England
Main contact forename	Graham
Main contact surname	Lymbery
Main contact user ID
Contact organisation	Sefton Metropolitan Borough Council
Contact organisation web site	http://www.sefton.gov.uk/
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The sand dunes at Hightown north of Liverpool (Photo 1 and Map 1) were eroding at a rate of 0.5–1m per year. The structure protecting Blundellsands Sailing Club had less than a 10 year life span remaining, and 125 properties and the sailing club were at risk from coastal erosion. Using Section 106 money, a scheme was developed to buy more time by reinstating the dunes to the position they were in 30 years ago. Prior to the project this section of coast was losing, on average, 1,000m3 of sand a year. Post project it is losing the same amount, so by moving 28,000m3 of sand 28 years of time has been bought back.

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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