HYDRAULIC PUBLIC DOMAIN 0007

Layer of entities: Viewer\_risk\_flood This layer of entities contains different layers of information to reflect the hazards and risks associated with a flood regime in the 3 zones that according to member states have a Significant Potential Flood Risk. For each of the 3 zones there are the following layers of information: · EIMP Ptos: Points of particular importance · Pobl Affect: Affected population · ZI: Unflooded area · Preferred Flow Zone · Public Hydraulic Domain · IAMB Area: Area of environmental interest · AECO Affect: Economic Activity Affected All previous layers, except Preferred Flow Zone and Hydraulic Public Domain, are drawn for a return period of 100 and 500 years. In the Points of special importance, specific conditions are described to parking lots, hotels, health center, archaeological sites, trails, historical complex, etc. Each of the affected points is given a qualification of: Light, Grave, Very Grave. The affected population layer, gives us information on the number of inhabitants that is affected by the flood, and the total population of the municipality, to know the percentage of disease of the municipal population. The Flood Zone gives us the surface that is occupied by water in a one-grown regime for the two periods of return. This layer specifies that, this layer was calculated with the IBER and that the source of the calculations was performed on an MDT with an accuracy of 1 meter per 1 meter of LIDAR (GRAFCAN). The preferred Flow Zone is a layer that draws the polygon that is most often occupied by water when the ravine runs within its channel. The Hydraulic Public Domain is established with a return period of 100 years and with the available infrastructures to stop or reduce the effect of water. Two distinct zones are established: the Public Hydraulic Domain (DPH) and the servitude zone, which are 5 meters from the DPH to each of the two margins of the channel. The Area of Environmental Interest is a layer that indicates the protected areas that will be affected by a flood of the channel, and indicates what type of condition has the possibility of occurring. The Affected Economic Activity divides the affected area into different areas according to the type of activity, such as agriculture, urban, forestry, water bodies, etc. establishing an economic damage estimated in euros for each of them and an area of affection for each of them. All these layers described above are repeated for each of the river ARPSIs, which in the case of La Palma are: the ravine of Las Nieves, the ravine of Las Angustias and the ravine of La Paloma. If you need more information about the elaboration of each of the information layers that appear in this set of layers, see the Danger Maps and Flood Risks memo in the following link: <HTTP://BIT.LY/2MX95QZ>实体图层：Viewer_risk_flood 该实体图层包含多层信息，用以反映成员国划定的3个具有重大潜在洪涝风险区域内，与洪涝情势相关的灾害与风险情况。 针对上述3个区域，分别包含以下信息图层： · EIMP Ptos：重点点位（Points of particular importance） · Pobl Affect：受影响人口（Affected population） · ZI：未淹没区域（Unflooded Area） · Preferred Flow Zone：优选流区 · Public Hydraulic Domain：公共水利域 · IAMB Area：环境关注区域（Area of environmental interest） · AECO Affect：受影响经济活动（Economic Activity Affected） 除优选流区与公共水利域外，上述所有图层均针对100年一遇与500年一遇重现期进行绘制。 在重点点位图层中，针对停车场、酒店、医疗中心、考古遗址、步道、历史建筑群等对象描述了具体受灾情况，每个受影响点位被赋予轻、重、极重三级评定。 受影响人口图层提供了受洪涝影响的居民数量与所属市镇的总人口数据，用以计算市镇人口的受灾占比。 洪涝区域图层提供了两种重现期下，单次洪泛情势中水体覆盖的地表面积。该图层说明，其计算基于IBER模型，且计算数据源采用了分辨率为1米×1米的激光雷达（LIDAR）数字地形模型（MDT，GRAFCAN）。 优选流区图层绘制了当沟道于自身行洪通道内运行时，水体最常覆盖的多边形区域。 公共水利域以100年一遇重现期为基准，并结合可阻滞或减缓洪水影响的现有基础设施进行划定。该区域分为两类：公共水利域（DPH）以及距河道两侧各5米的防护带区域。 环境关注区域图层标注了河道洪涝灾害可能波及的保护区域，并说明了该区域可能发生的受灾类型。 受影响经济活动图层根据活动类型，将受影响区域划分为农业、城镇、林业、水体等不同类别，并为每类区域估算了以欧元计价的经济损失与受灾面积。 上述所有图层均针对每条ARPSI河流重复生成，在拉帕尔马岛的案例中，ARPSI河流包括：拉斯涅维斯沟谷、拉斯安古斯蒂亚斯沟谷与拉帕洛马沟谷。 若需了解本数据集各信息图层的详细制作方法，请参阅以下链接中的《灾害地图与洪涝风险备忘录》：<HTTP://BIT.LY/2MX95QZ>