SLIDE 1 Sandscaping
A Sand Motor in the UK?
Jaap Flikweert 14 September 2016
Ir Jaap Flikweert
Jaap.flikweert@rhdhv.com @JaapJFlikweert
SLIDE 2 @zandmotor
- NL zandmotor with some background and pictures
- Conclusion: inspiration, not copy - paste
Photos Joop van Houdt, Rijkswaterstaat
Zandmotor
Photo Joop van Houdt, Rijkswaterstaat
SLIDE 3
Inspirational…
Large scale & innovative Multi-functional & multi-funding solution Adaptive Transformational
…but could it work in the UK?
More complex coastlines Different governance & funding
Zandmotor in the Netherlands
SLIDE 4 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
More complex coastlines
SLIDE 5 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 More difficult to invest in innovation
Response to coastal squeeze:
Managed realignment, rather than feed the coast
Different governance
See also Vera Vikolainen’s PostDoc work (NatureCoast)
SLIDE 6
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
SLIDE 7
Inspirational… …but could it work in the UK?
Zandmotor in the Netherlands
SLIDE 8
Application in the UK: Sandscaping
The Crown Estate working with Royal HaskoningDHV, Arup, Van Oord and HR Wallingford
SLIDE 9
Application in the UK: Sandscaping
SLIDE 10 So what is Sandscaping?
→ sand or shingle, or even mud
- Design to make use of natural processes
→ can be more natural & more efficient
→ to influence processes & create economies of scale
- Multi-functional = Multi-fundable
→ reduce risk but also create opportunity
SLIDE 11
What are we doing?
National: profiling & enabling High-potential Sites Work with local parties on local cases
→ Longlist → Shortlist → Preferred option
SLIDE 12 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
SLIDE 13 Sandscaping (with shingle) in Suffolk
Royal HaskoningDHV, 2012
Slaughden:
- Confirmed that it can work:
1.2M m3 for 50 years
- Next step: consenting and funding
HR Wallingford, 2016
SLIDE 14
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
SLIDE 15
Wales
First sandscaping studies in 2011 Welsh Government’s Coastal Risk Management Programme North Wales, Pwllheli
SLIDE 16 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
SLIDE 17 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
SLIDE 18 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
SLIDE 19 Sandscaping
A Sand Motor in the UK?
Jaap Flikweert 14 September 2016
Ir Jaap Flikweert
Jaap.flikweert@rhdhv.com @JaapJFlikweert
