The risk analysis of levee systems: a comparison of international best practices

Abstract

Abstract.A risk analysis of a levee system estimates the overall level of flood risk associated with the levee system, according to a series of loading conditions, the levee performance and the vulnerability to flooding of assets in the protected area. This process, which requires the identification and examination of all the components that determine the risk of flooding in a system, includes different steps. Among these steps, µlevee system failure analysis ¶, µflood consequences analysis ¶ and µrisk attribution ¶ have benefitted from the most important advances of recent research projects. This paper presents a critical analysis of the latest methods to conduct levee system failure analysis, flood consequences analysis and risk attribution. It shows how these methods can contribute to improving the efficiency of the risk analysis process and therefore the design and management of levee systems.

Reducing flood risk by effective use of flood‐peak polders: A case study of the Tisza River

“…In case of more fragile dike sections a lower water level already poses risk. These approaches, usually applied in advanced assessment environments overviewed by Tourment et al (2016), require a spatially comprehensive and detail-extensive information base of the dike infrastructure that is not available in Hungary. Location specific dike quality information of the failure segments was incorporated in the ÁKK risk mapping methodology to modify the overflow heights of the dike sections at each of the failure segments.…”