Sebastiaan N. Jonkman, Leslie Mooyaart, Mathijs van Ledden, Kasper Stoeten, Peter de Vries, Kasper Lendering, Ad van der Toorn, Arno Willems, William J Merrell


The Houston - Galveston area is at significant risk from hurricane induced storm surges. This paper summarizes ongoing studies on flood risk reduction for the region. Firstly, based on a simplified probabilistic hurricane surge model , the return periods of surges within the bay have been estimated. This model framework can be used to assess the effectiveness of several risk reduction interventions. Sketch- and conceptual designs have been made of a storm surge barrier in the Bolivar Roads, that would be part of the Ike Dike coastal protection concept. Such a storm surge barrier would consist of two parts, an environmental section for flow requirements (consisting of caissons with vertical gates) and a navigation section of the barrier (consisting of a barge gate), which would allow unhindered passage of navigation during normal conditions. Future questions and challenges for flood risk reduction in the Bay are identified.


storm surge barrier, hurricanes, probabilistic analysis, flood risk, coastal protection, flood defences

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