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Flood hazard assessment and mapping in semi-arid piedmont areas: a case study in Beni Mellal, Morocco

Author

Listed:
  • Gabriela Werren

    (University of Lausanne)

  • Emmanuel Reynard

    (University of Lausanne)

  • Stuart N. Lane

    (University of Lausanne)

  • Daniela Balin

    (University of Lausanne)

Abstract

Flood hazard assessment and mapping is challenging in semi-arid ungauged basins because of the lack of data, the rapid runoff response, climatic variability, and the difficulties of modelling hydraulic processes, such as on piedmont alluvial fans. This study combines hydrological and hydraulic modelling with hydro-geomorphic knowledge gathered during post-flood campaigns in order to determine realistic flood hazard scenarios for a piedmont urban area in Morocco. Partial calibration of the hydrological and hydraulic models is performed using field-estimated peak discharge values and mapped flood extents for known flood events. The calibrated models are then applied to lower frequency–higher magnitude flood scenarios. Finally, a flood hazard map is designed using the Swiss hazard assessment and mapping procedures.

Suggested Citation

  • Gabriela Werren & Emmanuel Reynard & Stuart N. Lane & Daniela Balin, 2016. "Flood hazard assessment and mapping in semi-arid piedmont areas: a case study in Beni Mellal, Morocco," 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. 81(1), pages 481-511, March.
    • Handle: RePEc:spr:nathaz:v:81:y:2016:i:1:d:10.1007_s11069-015-2092-0
    DOI: 10.1007/s11069-015-2092-0
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    References listed on IDEAS

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    1. Yang Hong & Robert Adler & Andrew Negri & George Huffman, 2007. "Flood and landslide applications of near real-time satellite rainfall products," 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. 43(2), pages 285-294, November.
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    Cited by:

    1. Noura Dahri & Habib Abida, 2022. "Hydrologic modeling and flood hydrograph reconstitution under an arid climate condition: case of Gabes Watershed, South-Eastern Tunisia," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(8), pages 10289-10308, August.
    2. Yu Duan & Junnan Xiong & Weiming Cheng & Nan Wang & Yi Li & Yufeng He & Jun Liu & Wen He & Gang Yang, 2022. "Flood vulnerability assessment using the triangular fuzzy number-based analytic hierarchy process and support vector machine model for the Belt and Road region," 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. 110(1), pages 269-294, January.

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