frauke hoss - "multilayered safety: next step in dutch flood risk management"
Post on 16-Apr-2015
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1/26/13
Challenge the future Delft University of Technology
Multilayered Safety Next step in Dutch flood risk management?
Frauke Hoss MSc, Delft University of Technology
2 Multilayered Safety
Content
• Netherlands • Multilayered Safety • Results
3 Multilayered Safety
The Netherlands Area under sea level
4 Multilayered Safety
Local measures
Prevention
Alternative types of
Prevention
Evolution
5 Multilayered Safety
Alternative to Prevention (Multilayered Safety)
3. Crisis Management
2. Spatial Solutions
1. Prevention
6 Multilayered Safety
Prevention Multilayered Safety Layer 1
7 Multilayered Safety
Spatial Solutions Multilayered Safety Layer 2
Source: Environment Canada (http://www.ec.gc.ca)
8 Multilayered Safety
Crisis Management Multilayered Safety Layer 3
9 Multilayered Safety
Multilayered Safety
• Permanent measures • Probability-reducing • Large scale
Prevention
• Permanent measures • Loss-reducing (material
values) • Small scale
Spatial Solutions
• Temporary, organizational measures
• Loss-reducing (fatalities)
Crisis Management
10 Multilayered Safety
Dordrecht Numerical research
11 Multilayered Safety
Dordrecht Individual Risk
12 Multilayered Safety
• Multilayered Safety is a useful concept to organize integrated flood risk management
• Prevention: efficient on large scale, much responsibility for government, major change of environment, maintenance often neglected
• Spatial Solutions: cost-efficient to address local differences in risk, implementation/maintenance difficult to oversee, large role public
• Crisis Management: MUST, large uncertainty, shared responsibility g‘ment/public, organize on smallest scale possible
Sum-up Remember context!
13 Multilayered Safety
Questions?
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