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Resilient Urban Flood Management: A Multi-Objective Assessment of Mitigation Strategies

Author

Listed:
  • Stefan Reinstaller

    (Institute of Urban Water Management and Landscape Water Engineering, Graz University of Technology, 8010 Graz, Austria)

  • Fabian Funke

    (University of Innsbruck, Department of Infrastructure, Unit of Environmental Engineering, Technikerstrasse 13, 6020 Innsbruck, Austria)

  • Albert Willhelm König

    (Institute of Urban Water Management and Landscape Water Engineering, Graz University of Technology, 8010 Graz, Austria)

  • Markus Pichler

    (Institute of Urban Water Management and Landscape Water Engineering, Graz University of Technology, 8010 Graz, Austria)

  • Manfred Kleidorfer

    (University of Innsbruck, Department of Infrastructure, Unit of Environmental Engineering, Technikerstrasse 13, 6020 Innsbruck, Austria)

  • Dirk Muschalla

    (Institute of Urban Water Management and Landscape Water Engineering, Graz University of Technology, 8010 Graz, Austria)

Abstract

This study employs a comprehensive multi-objective efficiency index (EI) to assess urban flood mitigation strategies. The EI enables the simple interpretation of a mitigation strategy’s efficiency with a value range between −1 (low efficiency) and 1 (high efficiency), which represents a practical communication tool for decision makers, engineers, and researchers. This was tested at the study site of Feldbach (Austria) with an integrated 1D–2D urban flood model and a distributed hydrological model. A total of 112 scenarios were analysed for six mitigation strategies, which were built from three future challenge scenarios, two observed heavy storm events, and two hydrological pre-conditions. For the given study site, the analysis identifies mitigation strategies implemented in rural boundary areas as the most effective. A novel aspect of this study is the consideration of the urban water balance change, highlighting its impact on the EI. The analysis highlights the importance of analysing each relevant process separately to determine the EI in order to understand why a mitigation strategy is more or less efficient.

Suggested Citation

  • Stefan Reinstaller & Fabian Funke & Albert Willhelm König & Markus Pichler & Manfred Kleidorfer & Dirk Muschalla, 2024. "Resilient Urban Flood Management: A Multi-Objective Assessment of Mitigation Strategies," Sustainability, MDPI, vol. 16(10), pages 1-24, May.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:10:p:4123-:d:1394639
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    References listed on IDEAS

    as
    1. Wenchao Qi & Chao Ma & Hongshi Xu & Zifan Chen & Kai Zhao & Hao Han, 2021. "A review on applications of urban flood models in flood mitigation strategies," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 108(1), pages 31-62, August.
    2. Carlos Martínez & Arlex Sanchez & Beheshtah Toloh & Zoran Vojinovic, 2018. "Multi-objective Evaluation of Urban Drainage Networks Using a 1D/2D Flood Inundation Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 32(13), pages 4329-4343, October.
    3. Ralf Nordbeck & Reinhard Steurer & Lukas Löschner, 2019. "The future orientation of Austria’s flood policies: from flood control to anticipatory flood risk management," Journal of Environmental Planning and Management, Taylor & Francis Journals, vol. 62(11), pages 1864-1885, September.
    4. Yuk San Liew & Safari Mat Desa & Md. Nasir Md. Noh & Mou Leong Tan & Nor Azazi Zakaria & Chun Kiat Chang, 2021. "Assessing the Effectiveness of Mitigation Strategies for Flood Risk Reduction in the Segamat River Basin, Malaysia," Sustainability, MDPI, vol. 13(6), pages 1-23, March.
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