Case study:Humber Estuary Erosion Protection Programme

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Location: 53° 43' 30.44" N, 0° 18' 22.79" W

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Project overview

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Status	Planned
Project web site	http://www.therrc.co.uk/sites/default/files/projects/46_humber.pdf
Themes
Country	England
Main contact forename	Laur
Main contact surname	Rhodes
Main contact user ID
Contact organisation	Environment Agency
Contact organisation web site	http://www.gov.uk/government/organisations/environment-agency
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 defences around the Humber Estuary are affected by erosive forces as a result of strong currents and wave actio. These erosive forces cause damage to the defences and over time undermine the stability and integrity of the defences. If not addressed these defences are at risk of breaching, potentially causing significant flooding and risk to life. The Humber Estuary Erosion Protection Programme aims to remediate and manage the erosion caused to the defences. The programme is supported by the Defra-approved Humber Flood Risk Management Strategy. Alongside erosion protection works, the project also aims to achieve Water Framework Directive objectives through the design of schemes that deliver benefits to the environment. The Humber Estuary (Map 1) is home to 921,000 people of whom nearly 400,000 are at risk of flooding, as are important industries, 32,500 business and a significant agricultural sector. The area hosts some of the highest value assets and critical infrastructure in the country, including power stations and refineries, the country’s largest port complex, a petrochemicals industry worth £6 billion per year and approximately 115,000ha of high grade agricultural land. There are some 230km of flood defences protecting the area to various standards of protection.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Humber WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body No National/international site designation Local/regional site designations Protected species present No Invasive species present No 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 2017 Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Flood Defence Grant-in-Aid 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 Salt marsh and mudflat restoration 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