1. Flood protection in The Netherlands dr. Sybe Schaap,
Flood protection in The Netherlands dr. Sybe Schaap, President Association of Water Autorities Chairman Water Board Groot Salland

2. Netherlands: best protected delta region word wide

3. The Netherlands 26% below sea level
When no dikes/dunes: 66% frequently under water

4. The Netherlands 26% below sea level When no dikes/dunes: 66% frequently under water

5. The Netherlands 26% below sea level When no dikes/dunes: 66% frequently under water

6. Threats - North Sea - Inner Lake: Ysselmeer - Main Rivers: Rhine, Meuse

7. Risks - level country: to 6 m below sea level - dense population: 12 mln below sea level high level of investments - insurance/evacuation impossible Solution: high level of protection = prevention against floods

8. Protection - rings of levees - dams: fixed or flexible

10. Level of protection - 1/1.250 - 1/10.000 - level probably insufficient

11. Organization of water management - Central government. - legal system
Organization of water management - Central government - legal system strategic policy main system Regional Water Authorities

12. Water Authorities in
The Netherlands: 26

13. Lessons from history - often to late: disasters - clever response = reactive attitude : flood from North Sea : flood from River Rhine - challenges for response

14. Response - Protection Ysselmeer (1932) - Delta plan North Sea (1959) - Delta plan main rivers(1995) - Room for Rivers (2004) - New Delta Commission (2007)

15. Protection Ysselmeer

16. Protection Ysselmeer

17. Delta plan North Sea

18. STORMVLOEDKERING OOSTERSCHELDE
Barrier Oosterschelde

19. Maeslant barrier

20. Deltaplan Main Rivers

21. Inflatable barrier Ramspol

22. Inflatable barrier Ramspol

23. Inflatable barrier Ramspol

24. Kampen

25. Flood defence system Kampen (red line)

26. Room for Main Rivers

27. Bypass Kampen

28. Delta Commission - Pro active attitude - Vision until Extraction of new measures - coast defense - threat from rivers - soil subsidence

29. Threat word wide - climate
Threat word wide - climate? - sea level - soil subsidence in urbanized areas (delta’s/coasts) - density of population - New Orleans: wake up call

30. Protection. corporation of:. - public authorities
Protection corporation of: - public authorities - private partners Challenge: creativity