Case study:North Norfolk Coast

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Location: 52° 58' 15", 0° 31' 21"
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Project overview

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Status Complete
Project web site http://www.therrc.co.uk/sites/default/files/projects/47_northnorfolk.pdf
Themes Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Social benefits, Water quality
Country England
Main contact forename Oliver
Main contact surname Burns
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site http://www.gov.uk/government/organisations/environment-agency
Partner organisations Natural England, National Trust, RSPB, Norfolk Wildlife Trust
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 North Norfolk coast has a high landscape, biodiversity and geodiversity value, with a range of statutory designations. The risk of saline flooding to farmland, freshwater/wet grassland conservation sites and property and infrastructure is managed through a suite of measures including seawalls and natural barriers. A series of schemes have been developed in the past 15 years driven by the Shoreline Management Plan and other initiatives that work with natural processes. Between 2002 and 2015 a series of projects have restored more natural function to around 8km (18%) of the North Norfolk coast (Map 1). These locations showed good resilience to the 2013 storm surge. For example, the now naturally functioning shingle ridge at Cley, although breached in the event, closed naturally within weeks despite initial concerns that it would need artificial manipulation.

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Catchment and subcatchment



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 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

Reach length directly affected (m)
Project started 2002
Works started
Works completed
Project completed
Total cost category
Total cost (k€) £4.4m
"£" is not declared as a valid unit of measurement for this property.
Benefit to cost ratio
Funding sources Defra, Flood Defence Grant-in-Aid, RSPB, EU LIFE Programme, Environment Agency, Natural England, Norfolk Wildlife Trust, Norfolk County Council, East of England Development Agency, Department of Trade and Industry

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

Mitigation of a pressure Flood and coastal erosion protection
Hydromorphology
Biology
Physico-chemical
Other reasons for the project


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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
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Physico-chemical quality elements

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Any other monitoring, e.g. social, economic

Element When monitored Type of monitoring Control site used Result
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Monitoring documents



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Additional links and references

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Supplementary Information

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