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Flood risk management in Flanders: from flood risk objectives to appropriate measures through state assessment
Verbeke, S.; Devroede, N. (2017). Flood risk management in Flanders: from flood risk objectives to appropriate measures through state assessment. Houille blanche 4(4): 20-25. https://hdl.handle.net/10.1051/lhb/2017027
In: La Houille Blanche. Société Hydrotechnique de France: Grenoble. ISSN 0018-6368; e-ISSN 1958-5551, more
Peer reviewed article  

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Keyword
    Policies > Water policy
Author keywords
    flood directive; Flood risk management

Authors  Top 
  • Verbeke, S., more
  • Devroede, N.

Abstract
    In compliance with the EU Flood Directive to reduce flood risk, flood risk management objectives are indispensable for the delineation of necessary measures. In Flanders, flood risk management objectives are part of the environmental objectives which are judicially integrated by the Decree on Integrated Water Policy. Appropriate objectives were derived by supporting studies and extensive consultation on a local, regional and policy level. Under a general flood risk objective sub-objectives are formulated for different aspects: water management and safety, shipping, ecology, and water supply. By developing a risk matrix, it is possible to assess the current state of flood risk and to judge where action is needed to decrease the risk. Three different states of flood risk are distinguished: a) acceptable risk, where no action is needed, b) intermediate risk where the risk should be reduced by cost efficient actions, and c) unacceptable risk, where action is necessary. For each particular aspect, the severity of the consequences of flooding is assessed by quantifiable indicators, such as economic risk, people at risk and ecological flood tolerance. The framework also allows evaluating the effects of the implemented measures and the autonomous development such as climate change and land use change. This approach gives a quantifiable assessment of state, and enables a prioritization of flood risk measures for the reduction of flood risk in a cost efficient and sustainable way.

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