Flood hazard mapping of the Welang river, Pasuruan, East Java, Indonesia

E. Hidayah, G. Halik, I. Indarto, D. W. Khaulan
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引用次数: 4

Abstract

The availability of a flood hazard map is beneficial during flood risk reduction. However, there is a lack of high-resolution topographic data, which is a map realization obstacle. Therefore, this study aims to construct flood hazard maps based on hazard levels for various flood return periods. The 2D-hydrodynamic from the Hydrologic Engineering Center's River Analysis System (HEC-RAS) and Digital Surface Models (DSM) from Unmanned Aerial Vehicle (UAV) imagery were used for generating inundation maps. The results showed that simulation of return periods for 2 and 10 years illustrated a 37% increase in flood hazard levels. Furthermore, there was an increased danger level for locations that were exposed to flood inundation. This occurred in housing, some roads, and rice fields. Ultimately, this study mitigates flood hazards through the determination of evacuation directions, urban spatial planning, and informed flood mitigation measures.
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印度尼西亚东爪哇省帕苏鲁安市韦朗河洪水危险性测绘
在减少洪水风险的过程中,洪水危险地图的可用性是有益的。然而,缺乏高分辨率的地形数据,这是地图实现的障碍。因此,本研究旨在根据不同洪水重现期的危害程度构建洪水危害图。水文工程中心河流分析系统(HEC-RAS)的2D流体动力学和无人机(UAV)图像的数字表面模型(DSM)用于生成淹没地图。结果表明,对2年和10年重现期的模拟表明,洪水风险水平增加了37%。此外,受洪水淹没的地区的危险程度也有所增加。这种情况发生在住房、一些道路和稻田中。最终,本研究通过确定疏散方向、城市空间规划和明智的防洪措施来缓解洪水危害。
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来源期刊
CiteScore
2.90
自引率
16.70%
发文量
31
期刊介绍: JAWER’s paradigm-changing (online only) articles provide directly applicable solutions to water engineering problems within the whole hydrosphere (rivers, lakes groundwater, estuaries, coastal and marine waters) covering areas such as: integrated water resources management and catchment hydraulics hydraulic machinery and structures hydraulics applied to water supply, treatment and drainage systems (including outfalls) water quality, security and governance in an engineering context environmental monitoring maritime hydraulics ecohydraulics flood risk modelling and management water related hazards desalination and re-use.
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