Keynote Dynamic Dunes Congress 2015: Joost Veer - Coastal management in The Netherlands

1. Coastal Management in the Netherlands
Four decades of learning
JoostVeer@rijnland.net

2. Why are we here?

3. ’70s
escarpments,
erosion

4. ’70s
Narrow
beaches

5. ’80s

6. ’80s

7. 1990

8. Marram grass,
reed and willow
branches

9. Foreshore nourishment

10. Beach nourishment

11. Why manage? safety standards for flood
protection
<-100m ->

16. Dune
reinforcement

17. Reference coastline (1990)
• Sand nourishments on beach and foreshore
• Adding a lot of sand to achieve a dynamic equilibrium
• Coastline retreat was stopped
• Further loss of land prevented.
• Morphological changes: foredune development, locally
narrow beaches due to dune growth
• Difficult to manage,

18. Local blowout at Wassenaar : monitoring morphological changes

19. Present
day

20. Present
day

21. Present
day

23. Present day
• Less storm damage (fewer storms?)
• Predominantly limited to foredunes
• System (sand volumes) restores itself -> cheap, but
unpredictable and difficult tot manage
• Will it last?
• can we benefit even more from the dynamic processes?
• How does it really work?