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Framework of Spatial Flood Risk Assessment for a Case Study in Quang Binh Province, Vietnam

机译：越南Quang Binh省案例研究空间洪水风险评估框架

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Vietnam has been extensively affected by floods, suffering heavy losses in human life and property. While the Vietnamese government has focused on structural measures of flood defence such as levees and early warning systems, the country still lacks flood risk assessment methodologies and frameworks at local and national levels. In response to this gap, this study developed a flood risk assessment framework that uses historical flood mark data and a high-resolution digital elevation model to create an inundation map, then combined this map with exposure and vulnerability data to develop a holistic flood risk assessment map. The case study is the October 2010 flood event in Quang Binh province, which caused 74 deaths, 210 injuries, 188,628 flooded properties, 9019 ha of submerged and damaged agricultural land, and widespread damages to canals, levees, and roads. The final flood risk map showed a total inundation area of 64,348 ha, in which 8.3% area of low risk, 16.3% area of medium risk, 12.0% area of high risk, 37.1% area of very high risk, and 26.2% area of extremely high risk. The holistic flood risk assessment map of Quang Binh province is a valuable tool and source for flood preparedness activities at the local scale.
机译：越南一直受到洪水影响的广泛影响，遭受人类生命和财产的重大损失。虽然越南政府专注于堤防和预警系统等防洪结构措施，但该国仍然缺乏地方和国家层面的洪水风险评估方法和框架。在响应这一差距，这项研究开发了一种洪水风险评估框架，使用历史洪水标记数据和高分辨率数字高度模型来创建淹没地图，然后将此地图与曝光和漏洞数据组合以发展整体洪水风险评估地图。案例研究是2010年10月在Quang Binh省的洪水事件，其中造成74人死亡，210名伤害，188,628名淹没的物业，9019公顷的淹没和受损的农业用地，以及对运河，堤坝和道路的广泛损害。最终的洪水风险地图显示了64,348公顷的全部泛期面积，其中风险低8.3％，中等风险面积16.3％，风险高37.1％面积为37.1％的面积和26.2％的面积风险极高。 Quang Binh省的整体洪水风险评估地图是当地规模的洪水准备活动的宝贵工具和来源。

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