Sandscaping A Sand Motor in the UK? Jaap Flikweert 14 September - PowerPoint PPT Presentation

Sandscaping A Sand Motor in the UK? Jaap Flikweert 14 September 2016 Ir Jaap Flikweert Jaap.flikweert@rhdhv.com @JaapJFlikweert

@zandmotor  NL zandmotor with some background and pictures  Conclusion: inspiration, not copy - paste Zandmotor Photo Joop van Houdt, Rijkswaterstaat Photos Joop van Houdt, Rijkswaterstaat

Zandmotor in the Netherlands Inspirational…  Large scale & innovative  Multi-functional & multi-funding solution  Adaptive  Transformational …but could it work in the UK?  More complex coastlines  Different governance & funding

More complex coastlines  Variable shape Often crinkly  Often steep and deep   Variable sediment From mud to gravel, sometimes on one beach  Beaches only in some areas, and often eroding   Variable coastal processes Tidal range up to 15m  More influence of waves  Swell waves 

Different governance Geography, history and culture: → Coastal management in UK is important, but not a matter of survival Investment decisions:  Based on thorough structured process, to maximise ‘return on investment’  No legal standards or duty to protect See also Vera Vikolainen’s  More difficult to invest in innovation PostDoc work (NatureCoast) Response to coastal squeeze:  Managed realignment, rather than feed the coast

Working with natural processes - England Vision (2005): “More flood and coastal erosion solutions working with natural processes” Political driver (2008): “Establish a programme to achieve greater working with natural processes” National FCERM Strategy (2011): Included in Drivers and Objectives WwNP programme (ongoing): Evidence and mainstreaming

Zandmotor in the Netherlands Inspirational… …but could it work in the UK?

Application in the UK: Sandscaping The Crown Estate working with Royal HaskoningDHV, Arup, Van Oord and HR Wallingford

Application in the UK: Sandscaping

So what is Sandscaping?  Soft coastal management → sand or shingle, or even mud  Design to make use of natural processes → can be more natural & more efficient Large scale  → to influence processes & create economies of scale  Multi-functional = Multi-fundable → reduce risk but also create opportunity

What are we doing?  National: profiling & enabling  High-potential Sites  Work with local parties on local cases → Longlist → Shortlist → Preferred option

High potential sites for Sandscaping Where could it work technically?  Screening with GIS  Local knowledge & expert judgement Where could it be viable?  Fundable from risk reduction  Fundable from opportunity creation (regeneration)  Environmental constraints

Sandscaping (with shingle) in Suffolk Royal HaskoningDHV, 2012 Slaughden: • Confirmed that it can work: 1.2M m 3 for 50 years • Next step: consenting and funding HR Wallingford, 2016

Bacton Gas Terminal, Norfolk Eroding cliffs, longshore interactions Protect Terminal + mitigate negative impacts on villages downdrift → Sandscaping is the preferred solution Protect Terminal + enhance beaches for the villages downdrift Currently finetuning design & EIA → supported by NatureCoast

Wales First sandscaping studies in 2011 Welsh Government’s Coastal Risk Management Programme North Wales, Pwllheli

Penzance Decision pathway strategy One of the options for the next 10 years Drivers: • Support regeneration • Bring sediment to the shoreline • Scale needed to make sediment solution viable

What will it take to make it happen?  Local ownership & drive  Competitive business case  Acceptable uncertainty  Win-Win → Partnership of those who benefit & are willing to pay  Please In My Back Yard

Lessons for elsewhere  It takes a lot of effort…  Essential to understand context  It takes time to introduce innovative approaches  UK more representative for the rest of the world than NL  Appropriate and sensitive use of NL example

Sandscaping A Sand Motor in the UK? Jaap Flikweert 14 September 2016 Ir Jaap Flikweert Jaap.flikweert@rhdhv.com @JaapJFlikweert