The effect of interactions between failure mechanisms on the reliability of flood defenses

Structural reliability analysis often considers failure mechanisms as correlated but non-interacting processes. Interacting failure mechanisms affect each others performance, and thereby the system reliability. We describe such interactions in the context of flood defenses, and analyze under which conditions such interactions have a large impact...

Framework for assessing the performance of flood adaptation innovations using a risk-based approach

The application of risk-based approaches for the design of flood infrastructure has become increasingly common in flood management. This approach, based on risk reduction and reliability, is used to assess the performance of conventional interventions (e.g., flood defences and dams) and to support decisions regarding their implementation....

Overstromingsbenadering regionale keringen: Management samenvatting

Influence of load interdependencies of flood defences on probabilities and risks at the Bovenrijn/IJssel area, The Netherlands

In the Netherlands, flood risk analysis is usually carried out for a location, without considering potential flood defence failures in upstream areas. This may result in significant over- or underestimation of flood risks. The effect of upstream failures on failure probabilities and flood risks in other areas is called load interdependence of...

Effectiveness and reliability analysis of emergency measures for flood prevention

During flood events emergency measures are used to prevent breaches in flood defences. However, there is still limited insight in their reliability and effectiveness. The objective of this paper is to develop a method to determine the reliability and effectiveness of emergency measures for flood defences. The investigation is focused on measures...

Effectiveness and reliability of emergency measures for flood prevention

Floods in the summer of 2013 in Central Europe demonstrated once again that floods account for a large part of damage and loss of life caused by natural disasters. During flood threats emergency measures, such as sand bags and big bags, are often applied to strengthen the flood defences and attempt to prevent breaches. Although these measures...

Economic implications of multi-layer safety projects for flood protection

Recent experience of large-scale water disasters such as Hurricane Katrina in 2005 and the Great Eastern Japan Earthquake and Tsunami in 2011 has reminded mankind that disasters cannot be ruledout. Unprecedented low-probability events can happen even in the most well monitored areas, causing major social-economic disruption. Failing to prepare...

Werken aan een veilige delta

De recente overstromingen in het buitenland (New Orleans, Thailand, Japan en New York) laten zien hoe groot de maatschappelijke ontwrichting na een overstroming is en wat het belang van een goed waterkeringssysteem is. Hoewel Nederland één van de best beveiligde delta’s in de wereld is, voldoet een derde van onze hoofdwaterkeringen niet aan onze...

Coastal defence cost estimates: Case study of the Netherlands, New Orleans and Vietnam

This study is part of a global study on the costs of adaptation to the effects of climate change. It adds information from three specific case studies (the Netherland, New Orleans and Vietnam) to the global study. The case study areas are comparable by type of coast; all are low-lying deltaic coastal areas. This study investigates the unit cost...

Toekomst voor het Nederlandse Polderconcept

Naar aanleiding van ons onderzoek geven we de volgende aanbevelingen aan de Deltacommissie: 1. De financi effecten van het aanpassen van waterkeringen zijn bepaald bij specifiek klimaatscenario. We bevelen aan om deze effecten ook kwantitatief in beeld te brengen voor andere scenarios. 2. Voor maatschappelijke acceptatie van het versterken van...

Schade door overstroming: Ervaringen uit New Orleans

Korte samenvatting van de overstromingen door hurricane Katrina in augustus 2005 in New Orleans en omgeving. Beschrijving van de effecten op het gebied en de bewoners, kwantitatieve inschatting van de gevolgend, en wat we hieruit voor Nederland kunnen leren. Uitgave met ondersteuning van het Ministerie van Economische Zaken.

Cost benefit analysis and flood damage mitigation in the Netherlands