Darja Tretjakova MANAGING FLOOD RISK IN INTERNATIONAL HARBOURS

Darja Tretjakova MANAGING FLOOD RISK IN INTERNATIONAL HARBOURS

Outline Origins and reasons Methodology Results Conclusions 2

Why this research? Increasing flood risk: CC, socio-economic development Port vulnerable to extreme flood events (KvK) Rotterdam Adaptation Strategy (2014) No legal standards: What risk is acceptable? What are other ports doing with this risk? 3

Research question How do the international ports deal with flood risk now and how will they deal with it in the future? 4

Ports 5

DPSIR model Driver: Climate change Pressure: Sea level rise State: Low elevation level Response: Adaptive building Impact: Increased chance of floods 6

Economic and spatial development Climate change DPSIR model Drivers Pressures State Impact Sea level rise Growth of ports Spatial development Flood safety Elevation Storm surge barriers Other barriers Present policy Spatial planning Spatial planning Nature Types of functions Vulnerability of infrastructure Vulnerability of utility services Present policy Organisation Role division in port management Emergency services Liability for damages Chance of flooding Reccurence period Extent and depth Flow velocity Consequences Barrier closure Environmental damage - Soil pollution - Damage to nature Economic damage - Buildings - Infrastructure - Failure port services - Failure utility services - Impediment ships - Damage to customers and suppliers Casualties Societal disruption Response Physical protection - Building barriers - Elevation increase - Adaptive building - Modyfying or replacing buildings and infrastructure Risk communication Crisis communication Evacuation plans Insurance Policy development - Spatial planning - Flood safety - Adaptation strategies 7

Economic and spatial development Climate change DPSIR model Drivers Pressures State Impact Sea level rise Growth of ports Spatial development Flood safety Elevation Storm surge barriers Other barriers Present policy Spatial planning Spatial planning Nature Types of functions Vulnerability of infrastructure Vulnerability of utility services Present policy Organisation Role division in port management Emergency services Liability for damages Chance of flooding Reccurence period Extent and depth Flow velocity Consequences Barrier closure Environmental damage - Soil pollution - Damage to nature Economic damage - Buildings - Infrastructure - Failure port services - Failure utility services - Impediment ships - Damage to customers and suppliers Casualties Societal disruption Response Physical protection - Building barriers - Elevation increase - Adaptive building - Modyfying or replacing buildings and infrastructure Risk communication Crisis communication Evacuation plans Insurance Policy development - Spatial planning - Flood safety - Adaptation strategies 8

Chance of flooding Rotterdam 1/10.000-1/4.000 London 1/1.000-1/100 Hamburg 1/500 New York 1/100 Melbourne 1/100 Ho Chi Minh 1/30 9

Impacts of flooding Economic damage Damage to facilities Failure of port services Environmental damage Casualties Societal disruption Failure of utility services Failure of services to hinterland 10

Response physical protection High elevation levels Bron: Bobbink TU Delft i.o.v. gemeente Rotterdam Rotterdam, Melbourne Storm surge barriers Rotterdam, London Other physical protection Hamburg (74 polders) 11

Response Climate adaptation in policy Rotterdam on all levels Municipality: Minimal elevation levels, Rotterdam Adaptation Strategy Province: Casualty methodology National: Delta program Rijnmond-Drechtsteden Other cities not on all levels Attention for the port is still lacking everywhere 12

Conclusions (1) No quantitative study on port vulnerability yet conducted There is a general lack of attention for ports in adaptation strategies Ports take flood risk into account differently Adaptation gets more attention, different priorities, no implementation yet Companies are liable for flood damage, sometimes insurance is available Indirectly ports benefit from other measures 13

Conclusions (2) No large-scale adaptation plans on short term, there is no urgency to reduce flood risk. On long term the ports will consider large scale adaptation options. 14

More information: www.rotterdamclimateinitiative.nl Darja Tretjakova dasha.tretjakova@wur.nl 15