Assessment of check dams’ role in flood hazard mapping in a semi-arid environment

Article

Sepehri, Mehdi, Ildoromi, Ali Reza, Malekinezhad, Hossein, Ghahramani, Afshin, Ekhtesasi, Mohammad Reza, Cao, Chen and Kiani-Harchegani, Mahboobeh. 2019. "Assessment of check dams’ role in flood hazard mapping in a semi-arid environment." Geomatics, Natural Hazards and Risk. 10 (1), pp. 2239-2256. https://doi.org/10.1080/19475705.2019.1692079
Article Title

Assessment of check dams’ role in flood hazard mapping in a semi-arid environment

ERA Journal ID124658
Article CategoryArticle
AuthorsSepehri, Mehdi (Author), Ildoromi, Ali Reza (Author), Malekinezhad, Hossein (Author), Ghahramani, Afshin (Author), Ekhtesasi, Mohammad Reza (Author), Cao, Chen (Author) and Kiani-Harchegani, Mahboobeh (Author)
Journal TitleGeomatics, Natural Hazards and Risk
Journal Citation10 (1), pp. 2239-2256
Number of Pages18
Year2019
Place of PublicationUnited Kingdom
ISSN1947-5705
1947-5713
Digital Object Identifier (DOI)https://doi.org/10.1080/19475705.2019.1692079
Web Address (URL)https://www.tandfonline.com/doi/full/10.1080/19475705.2019.1692079
Abstract

This study aimed to examine flood hazard zoning and assess the role of check dams as effective hydraulic structures in reducing flood hazards. To this end, factors associated with topographic, hydrologic and human characteristics were used to develop indices for flood mapping and assessment. These indices and their components were weighed for flood hazard zoning using two methods: (i) a multi-criterion decision-making model in fuzzy logic and (ii) entropy weight. After preparing the flood hazard map by using the above indices and methods, the characteristics of the change‐point were used to assess the role of the check dams in reducing flood risk. The method was used in the Ilanlu catchment, located in the northwest of Hamadan province, Iran, where it is prone to frequent flood events. The results showed that the area of ‘very low’, ‘low’ and ‘moderate’ flood hazard zones increased from about 2.2% to 7.3%, 8.6% to 19.6% and 22.7% to 31.2% after the construction of check dams, respectively. Moreover, the area of ‘high’ and ‘very high’ flood hazard zones decreased from 39.8% to 29.6%, and 26.7% to 12.2%, respectively.

Keywordsflood hazard, multi-criteria decision-making, fuzzy logic, entropy weight, check dam, change-point
ANZSRC Field of Research 2020370704. Surface water hydrology
410699. Soil sciences not elsewhere classified
379999. Other earth sciences not elsewhere classified
410601. Land capability and soil productivity
Byline AffiliationsYazd University, Iran
Malayer University, Iran
Centre for Sustainable Agricultural Systems
Jilin University, China
Institution of OriginUniversity of Southern Queensland
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Ghahramani, Afshin and Moore, Andrew D.. 2015. "Systemic adaptations to climate change in southern Australian grasslands and livestock: production, profitability, methane emission and ecosystem function." Agricultural Systems. 133, pp. 158-166. https://doi.org/10.1016/j.agsy.2014.11.003
The value of adapting to climate change in Australian wheat farm systems: farm to cross-regional scale
Ghahramani, Afshin, Kokic, Philip N., Moore, Andrew D., Zheng, Bangyou, Chapman, Scott C., Howden, Mark S. and Crimp, Steven J.. 2015. "The value of adapting to climate change in Australian wheat farm systems: farm to cross-regional scale." Agriculture, Ecosystems and Environment. 211, pp. 112-125. https://doi.org/10.1016/j.agee.2015.05.011
Impact of climate changes on existing crop-livestock farming systems
Ghahramani, Afshin and Moore, Andrew D.. 2016. "Impact of climate changes on existing crop-livestock farming systems." Agricultural Systems. 146, pp. 142-155. https://doi.org/10.1016/j.agsy.2016.05.011