DP Flood Hazard High (OpenData)

This derived entity describes land which is potentially susceptible to inundation during an extreme hydrological event (1 in 500 years), which may pose a risk to life or property due to the water velocity and/or inundation depth experienced. The vectorised result has been deliberately output in its unsmoothed form to indicate a low degree of accuracy. This entity is intersected with RatingUnit to enable generation of property condition comments. It is spatially abstracted to an area. Entity Type: Concept.本派生实体描述的是易受500年一遇极端水文事件淹没的土地，此类土地可能因遭遇的水流速度和/或淹没水深，对生命财产构成威胁。本次矢量化成果特意采用未平滑格式输出，以表明其精度较低。本实体与评级单元（RatingUnit）进行空间相交操作，以支持生成房产状况评述内容。该实体在空间上被抽象为面状区域。实体类型：概念（Concept）。