Threat and risk maps, distribution BHF

Propagation layer for the calculated maximum flow rate/level corresponding to threat maps/risk maps for the areas with significant flood risk according to the Flood Risks Ordinance (SFS 2009:956) 2018. For watercourses there is only a distribution layer for a demarcated area and not the entire watercourse. If an area is identified from the sea and there is also a watercourse or lake in the area, there are also threat maps/risk maps developed for these. For watercourses and lakes, calculations are used for today’s climate while for the sea the calculations have been climate adapted to the end of the century where land elevation is included. The data set is the result of the revision of Stage 2 for Cycle 2 (2019) of the Floods Directive, but also for Stage 2 of Cycle 1 (2013) is also included in the data set and it did not include floods from the sea as they do in the revision of Stage 2 for Cycle 2 (2019). For watercourses, a 2 dimensional hydraulic model has been used to develop the distribution. For the sea, Lake Vänern, Vättern and Lake Mälaren, an analysis of altitude has been used. Which cycle or threat map is in from is shown in the attribute table. More information on the Flood Risks Regulation can be found at: https://www.msb.se/sv/amnesomraden/skydd-mot-olyckor-och-farliga-amnen/naturolyckor-och-klimat/oversvamning/oversvamningsforordningens-tre-steg/本数据集为针对2018年《洪水风险条例》（SFS 2009:956）划定的显著洪水风险区域，匹配对应威胁地图与风险地图的计算最大流量/水位演进图层。针对河道而言，仅设有划定区域的分布图层，而非整条河道的分布图层。若某区域由海洋划定范围，且该区域内同时存在河道或湖泊，则亦针对此类水体生成了对应的威胁地图与风险地图。 针对河道与湖泊，计算基于当前气候情景；而针对海洋区域，计算已适配至本世纪末气候情景，并纳入了陆地高程参数。本数据集为《洪水指令》第二周期（2019年）第二阶段修订的最终成果，同时纳入了第一周期（2013年）第二阶段的相关数据；2013年版本未涵盖海洋洪水相关内容，而2019年第二阶段修订版则补充了此类内容。 针对河道，采用二维水力学模型生成分布图层；针对海洋区域、维纳恩湖（Vänern）、维特恩湖（Vättern）以及梅拉伦湖（Mälaren），则采用高程分析方法。数据所属周期或对应威胁地图的相关信息，可在属性表中查看。 有关《洪水风险条例》的更多信息，可访问以下链接：https://www.msb.se/sv/amnesomraden/skydd-mot-olyckor-och-farliga-amnen/naturolyckor-och-klimat/oversvamning/oversvamningsforordningens-tre-steg/