Urban flash flood poses significant hazards on urbanised area, in particular to buildings and infrastructure due to its fast occurrence and high magnitude in financial loss. Risk assessment of the flash flood identify the critically flood-prone areas and provide assistance in improving the resiliency of mitigation plans. In this study, we developed an assessment of flood susceptibility, vulnerability, the impact of socio-economic, and integrated flash flood index based on the historical data of flood events recorded in Kuala Lumpur. Data of rainfall characteristics, inundated location, and areas are extracted from the reports of flood events from the year 2005-2015. Each event is then segregated according to the place of incidence, providing point-based recurrence of flood at each identified location. Indicators of assessment include frequency and month of occurrence, rainfall characteristics (of intensity, duration, and depth), and land use categories. A total of 137 (point) locations have been identified, where each location is colour-coded based on a 5-point rating scale. The point-based flood-prone locations are validated with the watershed based of 50-ARI rainfall modelling, providing comprehensive hotspot maps. Developed interactive colour-coded flood prone maps facilitate relevant agencies for improved coordination in flash flood mitigation, response and early warning.

由于城市山洪泛滥的快速发生和严重的经济损失，它对城市化地区尤其是建筑物和基础设施构成了重大危害。山洪暴发的风险评估可确定洪灾多发地区，并为提高缓解计划的适应性提供帮助。在这项研究中，我们根据在吉隆坡记录的洪水事件的历史数据，对洪水的敏感性，脆弱性，社会经济的影响以及综合性洪水指数进行了评估。降雨特征，淹没位置和面积的数据摘自2005-2015年洪水事件的报告。然后，根据事件发生的地点对每个事件进行隔离，从而在每个确定的位置提供基于点的洪水重复发生。评估指标包括发生的频率和月份，降雨特征（强度，持续时间和深度）以及土地利用类别。总共确定了137个（点）位置，其中每个位置均基于5点等级标度进行了颜色编码。基于点的易发洪水地点已通过基于50 ARI降雨模型的分水岭进行了验证，可提供全面的热点地图。制定的交互式彩色编码洪水易发图有助于有关机构在减轻洪水，响应和预警方面进行更好的协调。基于点的易发洪水地点已通过基于50 ARI降雨模型的分水岭进行了验证，可提供全面的热点地图。开发的交互式彩色编码洪水易发图有助于相关机构在减轻洪水，响应和预警方面进行更好的协调。基于点的洪水易发地点已通过基于50 ARI降雨模型的分水岭进行了验证，可提供全面的热点地图。制定的交互式彩色编码洪水易发图有助于有关机构在减轻洪水，响应和预警方面进行更好的协调。