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Exploring Options for Flood Risk Management with Special Focus on Retention Reservoirs

Author

Listed:
  • Nejc Bezak

    (Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

  • Martina Kovačević

    (Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia)

  • Gregor Johnen

    (Faculty of Civil Engineering, University of Duisburg-Essen, 45141 Essen, Germany)

  • Klaudija Lebar

    (Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

  • Vesna Zupanc

    (Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia)

  • Andrej Vidmar

    (Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

  • Simon Rusjan

    (Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia)

Abstract

Floods are among the most frequent and deadliest natural disasters, and the magnitude and frequency of floods is expected to increase. Therefore, the effects of different flood risk management options need to be evaluated. In this study, afforestation, permeable concrete implementation, and the use of dry and wet retention reservoirs were tested as possible options for urban flood risk reduction in a case study involving the Glinščica river catchment (Slovenia). Additionally, the effect of dry and wet reservoirs was investigated at a larger (catchment) scale. Results showed that in the case of afforestation and permeable concrete, large areas are required to achieve notable peak discharge reduction (from a catchment scale point of view). The costs related to the implementation of such measures could be relatively high, and may become even higher than the potential benefits related to the multifunctionality and multi-purpose opportunities of such measures. On the other hand, dry and wet retention reservoirs could provide more significant peak discharge reductions; if appropriate locations are available, such reservoirs could be implemented at acceptable costs for decision makers. However, the results of this study show that reservoir effects quickly reduce with scale. This means that while these measures can have significant local effects, they may have only a minor impact at larger scales. We found that this was also the case for the afforestation and permeable concrete.

Suggested Citation

  • Nejc Bezak & Martina Kovačević & Gregor Johnen & Klaudija Lebar & Vesna Zupanc & Andrej Vidmar & Simon Rusjan, 2021. "Exploring Options for Flood Risk Management with Special Focus on Retention Reservoirs," Sustainability, MDPI, vol. 13(18), pages 1-20, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:18:p:10099-:d:632078
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    References listed on IDEAS

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    1. Chiara Vallebona & Elisa Pellegrino & Paolo Frumento & Enrico Bonari, 2015. "Temporal trends in extreme rainfall intensity and erosivity in the Mediterranean region: a case study in southern Tuscany, Italy," Climatic Change, Springer, vol. 128(1), pages 139-151, January.
    2. Yun Bai & Nejc Bezak & Klaudija Sapač & Mateja Klun & Jin Zhang, 2019. "Short-Term Streamflow Forecasting Using the Feature-Enhanced Regression Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 33(14), pages 4783-4797, November.
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    Cited by:

    1. Rapeepat Techarungruengsakul & Anongrit Kangrang, 2022. "Application of Harris Hawks Optimization with Reservoir Simulation Model Considering Hedging Rule for Network Reservoir System," Sustainability, MDPI, vol. 14(9), pages 1-21, April.
    2. Maksymilian Połomski & Mirosław Wiatkowski, 2023. "Impounding Reservoirs, Benefits and Risks: A Review of Environmental and Technical Aspects of Construction and Operation," Sustainability, MDPI, vol. 15(22), pages 1-23, November.

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