HWRM Cards 1st Cycle Hamburg

Technical description: The EC Flood Risk Management Directive aims to reduce risks from floods. The first of three prescribed steps to this objective is the assessment of flood risks. As a result, the risk areas for inland floods and storm surges are published here. The second step is the identification and presentation of hazard and risk maps in the risk areas. The hazard and risk maps cover three flood events each. For inland floods, the frequent event is (marking: H for High) a 10-yearly average event (marking: M for Middle) a 100-year and the rare event (marking: L for Low) a 200-yearly. For the areas endangered by storm surges, the frequent event is a 20-yearly event, the median event, like inland floods, a 100-yearly and the rare event an extreme event in which a rare, extremely high water level (7.30 mNN at St. Pauli level) is assumed and additionally disregarded the effect of flood protection systems. The hazard maps represent the extent of the flood events in the form of expansion and water depths. The risk maps show how the affected areas are used, the location of industrial assets and protected goods, as well as the number of potentially affected inhabitants. In the final step, a flood risk management plan must be drawn up. Legal background: The Flood Risk Management Directive (2007/60/EC of 23.10.2007) regulates the development and publication of flood risk maps. The legal transposition of this EC Directive into national law took place with the amendment of the WHG of 1 March 2010. The data for flood risk management (HWRM) maps of the 1st reporting cycle (2013-2019) are provided here as a WMS presentation service and as a WFS download service.技术说明： 欧盟洪水风险管理指令（EC Flood Risk Management Directive）旨在降低洪水相关风险。为实现该目标，规定的三步实施流程中，第一步为洪水风险评估。据此，本数据集公开内陆洪水与风暴潮的风险区域信息。 第二步为识别并编制风险区域内的灾害与风险地图。每套灾害与风险地图均覆盖三类洪水事件： 针对内陆洪水，高频事件为10年一遇事件（标记为H，即高风险）、中频事件为100年一遇事件（标记为M，即中风险）、低频事件为200年一遇事件（标记为L，即低风险）。针对风暴潮易发区域，高频事件为20年一遇事件；中频事件与内陆洪水一致，为100年一遇事件；低频事件则为极端事件，即假设出现罕见极高水位（圣保罗码头水位达7.30米NN），且暂不考虑防洪系统的防护作用。 灾害地图以淹没范围与水深的形式呈现各类洪水事件的影响区域；风险地图则展示受影响区域的土地利用类型、工业资产与保护对象的分布位置，以及潜在受影响居民数量。 第三步为编制洪水风险管理计划。 法律背景： 《2007年10月23日欧盟第2007/60/EC号洪水风险管理指令》（Flood Risk Management Directive）对洪水风险地图的编制与发布作出规范。该欧盟指令通过2010年3月1日修订的《水管理法》（WHG）完成国内法转化。 本次提供首轮报告周期（2013-2019年）的洪水风险管理（HWRM）地图数据，以Web地图服务（Web Map Service, WMS）展示服务与Web要素服务（Web Feature Service, WFS）下载服务的形式对外提供。