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Integration of HEC-RAS and HEC-HMS with GIS in Flood Modeling and Flood Hazard Mapping

Author

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  • İsmail Bilal Peker

    (Department of Civil Engineering, Istanbul University-Cerrahpaşa, Avcılar, Istanbul 34320, Türkiye)

  • Sezar Gülbaz

    (Department of Civil Engineering, Istanbul University-Cerrahpaşa, Avcılar, Istanbul 34320, Türkiye)

  • Vahdettin Demir

    (Department of Civil Engineering, KTO Karatay University, Konya 42020, Türkiye)

  • Osman Orhan

    (Department of Geomatic Engineering, Mersin University, Mersin 33110, Türkiye)

  • Neslihan Beden

    (Department of Meteorological Engineering, Özdemir Bayraktar Faculty of Aeronautics and Astronautics, University of Samsun, Samsun 55000, Türkiye)

Abstract

Floods are among the most devastating disasters in terms of socio-economics and casualties. However, these natural disasters can be managed and their effects can be minimized by flood modeling performed before the occurrence of a flood. In this study, flood modeling was developed for the Göksu River Basin, Mersin, Türkiye. Flood hazard and risk maps were prepared by using GIS, HEC-RAS, and HEC-HMS. In hydraulic modeling, Manning’s n values were obtained from 2018 CORINE data, return period flow rates (Q25, Q50, Q100, Q500) were obtained from HEC-HMS, and the application was carried out on a 5 m resolution digital surface model. In the study area, the water depths could reach up to 10 m, and water speeds were approximately 0.7 m/s. Considering these values and the fact that the study area is an urban area, hazard maps were obtained according to the UK Department for Environment, Food and Rural Affairs (DEFRA) method. The results indicated that possible flood flow rates from Q25 to Q500, from 1191.7 m 3 /s to 1888.3 m 3 /s, were detected in the study area with HEC-HMS. Flooding also occurred under conditions of the Q25 flow rate (from 4288 km 2 to 5767 km 2 ), and the impacted areas were classified as extremely risky by the DEFRA method.

Suggested Citation

  • İsmail Bilal Peker & Sezar Gülbaz & Vahdettin Demir & Osman Orhan & Neslihan Beden, 2024. "Integration of HEC-RAS and HEC-HMS with GIS in Flood Modeling and Flood Hazard Mapping," Sustainability, MDPI, vol. 16(3), pages 1-18, February.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:3:p:1226-:d:1330945
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    References listed on IDEAS

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    1. Mohd Yawar Ali Khan & Mohamed ElKashouty & Ali M. Subyani & Fuqiang Tian, 2022. "Flash Flood Assessment and Management for Sustainable Development Using Geospatial Technology and WMS Models in Abha City, Aseer Region, Saudi Arabia," Sustainability, MDPI, vol. 14(16), pages 1-24, August.
    2. Yun Tang & Arturo S. Leon & M. L. Kavvas, 2020. "Impact of Size and Location of Wetlands on Watershed-Scale Flood Control," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(5), pages 1693-1707, March.
    3. Neslihan Beden & Asli Ulke Keskin, 2021. "Estimation of the local financial costs of flood damage with different methodologies in Unye (Ordu), Turkey," 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(3), pages 2835-2854, September.
    4. Gamze Koç & Annegret H. Thieken, 2018. "The relevance of flood hazards and impacts in Turkey: What can be learned from different disaster loss databases?," 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. 91(1), pages 375-408, March.
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