Dataset Direct Download Service (WFS): Limit of the reference flooding zone in the crossing of Ussel (2009) in Corrèze

L_ZI_DIEGE_2009_LIM_L_019 Mapping of flooding areas of the Diege in the crossing of Ussel in Corrèze Municipalities of Saint-Pardoux-le-Vieux, Chaveroche, Ussel, Mestes, Saint-Exupéry-les-Roches Tables of flooded areas according to their frequency (preferential flow zone — raw return 5 to 15 years- and maximum flooding zone by hydrogeomorphology — exceptional raw-) estimated in relation to the valley morphology for the river La Diège. Tables of hazards, water heights and flow velocities obtained by hydraulic modelling (Hac-Ras model) for the section crossing the urban area of Ussel (low, medium and high speeds; water heights < 0.5 m, between 0.5 m and 1 m and > 1 m; low, medium and strong hazard (cerema 2009 study) 1/10000 for the hydrogeomorphological approach and 1/5000 for the hydraulic approach.L_ZI_DIEGE_2009_LIM_L_019 科雷兹省（Corrèze）于塞勒（Ussel）过境段拉迪耶格河（La Diège）泛滥区域分布图，涉及的覆盖市镇包括圣帕尔杜勒维约、沙弗罗什、于塞勒、梅斯特、圣埃克苏佩里莱罗什。 针对拉迪耶格河，基于河谷形态估算得到的按发生频率分类的泛滥区域统计表：其中优先径流区对应原始重现期5至15年的洪水数据，水文地貌学方法划定的最大泛滥区对应极端事件原始数据。 通过水动力建模（Hac-Ras模型）生成的于塞勒城区过境段灾害等级、水深及流速数据表，其中流速分为低、中、高三档；水深划分为小于0.5米、0.5米至1米以及大于1米三类；灾害等级分为低、中、高风险（数据源自法国环境与能源控制署（CEREMA）2009年研究）。 水文地貌学方法的制图比例尺为1:10000，水动力建模方法的制图比例尺为1:5000。