sandscaping in bacton, north norfolk - flood and coast...sandscaping in bacton, north norfolk...
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Sandscaping in Bacton, North Norfolk
Protecting critical infrastructure and
benefitting communities
Flood & Coast29 March 2017
Jaap Flikweert CEng FCIWEM C.WEM
[email protected] @JaapJFlikweert
Flood & Coast 2017- Sandscaping in Bacton
@zandmotor
NL zandmotor with some background and pictures
Conclusion: inspiration, not copy - paste
Photos Joop van Houdt, Rijkswaterstaat
Zandmotor:Built in 2011
Size: 21.5m m3
Cost: £60m
Design life: 20 years
Photo Joop van Houdt, Rijkswaterstaat
Flood & Coast 2017- Sandscaping in Bacton
Inspirational…
Large scale & innovative nature
Multi-functional & multi-funding solution
Adaptive
Transformational
…But could it work in the UK?
More complex coastlines
Different governance & funding
NL to UK
Flood & Coast 2017- Sandscaping in Bacton
Application in the UK: Sandscaping
National: profiling & enabling
High-potential Sites
Work with local parties
on local cases
Flood & Coast 2017- Sandscaping in Bacton
So what is Sandscaping?
Soft coastal management
Design to make use of natural processes
Large scale
Multi-functional = Multi-fundable
Can work if:
Coastal processes are suitable
Locally owned & wanted
Competitive business case
Flood & Coast 2017- Sandscaping in Bacton
Bacton to Walcott
Norfolk Coast
Eroding coast
SMP
Gas Terminal
~1/3 of UK’s Gas Supply
Four private operators
Villages
Residential community
Caravan parks
Very aware of coastal risk
Reproduced from Ordnance Survey Maps with the permission of the Controller
of HM Stationary Office. Crown copyright reserved Licence AL.100026380
Bacton Gas
Terminal
Mundesley
Bacton Village
Walcott
Contains OS data © Crown copyright and database right 2017
Picture: Mike Page
Flood & Coast 2017- Sandscaping in Bacton
Story of the project
Two starting points:
Sandscaping pre-feasibility study
for NNDC
Cliff erosion in December 2013 storm
Study for Terminal Companies: Sandy solution preferred
and possible
Exploring a combined approach: from mitigating impacts
to generating benefits
Delay failure of coastal defences
→ Buy time for adaptation
Improve community viability – but in context of change
Flood & Coast 2017- Sandscaping in Bacton
Making it happen
Partnership Bacton Terminal Companies
North Norfolk District Council
Support from the Environment Agency & Input from The Crown Estate
Funding Terminal companies pay for their own protection
Good case for FCERM Grant in Aid: Additional B> Additional C
NNDC, Local Levy, EA WwNP funding
Potentially LEP, H2020 and others
Project-specific dredging area?
Flood & Coast 2017- Sandscaping in Bacton
Design process
Iterative finetuning
Modelling
Various tools: 2D Area, 1D longshore, 1D cross-shore, 2D horizontal
Expertise (incl. HR Wallingford, Deltares / NL Zandmotor, local
knowledge)
Contractor engagement
Informal ECI with all relevant contractors
Optimise design & develop relationships
Environmental Impact Assessment
Constraints, but also opportunities
Flood & Coast 2017- Sandscaping in Bacton
What will it look like?
1.5-2.5 million m3 of sediment
Terminal:
Very high protection level
Renourishment interval ~20 years
Villages:
Higher beaches & Slower erosion →
Time for adaptation
Dry beach & a special place
Flood & Coast 2017- Sandscaping in Bacton
Next steps
Design & Consents
Securing funding
Procurement → Construction expected in 2018
Monitoring and research:
For functional performance and impacts
For knowledge development
Flood & Coast 2017- Sandscaping in Bacton
Conclusions
Sandscaping: translating NL Zandmotor to UK context
Expecting to implement in Bacton in 2018
Template for making it happen elsewhere:
partnership, design approach
Maximise value of this first UK implementation
Sandscaping in Bacton, North Norfolk
Protecting critical infrastructure and
benefitting communities
Flood & Coast29 March 2017
Jaap Flikweert CEng FCIWEM C.WEM
[email protected] @JaapJFlikweert