Simple download service (Atom) of the dataset: 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 本数据集为科雷兹省（Corrèze）境内于塞勒（Ussel）河段的迪耶日河（La Diège）洪水淹没范围制图成果，覆盖的行政区划包括圣帕尔杜勒维耶（Saint-Pardoux-le-Vieux）、沙弗罗什（Chaveroche）、于塞勒（Ussel）、梅斯特（Mestes）与圣叙佩里莱罗什（Saint-Exupéry-les-Roches）。 数据集包含两类核心表格：其一为基于河谷地貌条件估算得到的不同重现期淹没范围表格，包含优先漫流区（原始重现期5~15年）以及通过水文地貌学方法提取的极端最大淹没区（原始极端重现期数据）；其二为针对穿越于塞勒城区的河段，借助水力学模型（Hac-Ras model）模拟生成的灾害等级、水深与流速表格，其中流速分为低、中、高三档，水深划分为<0.5米、0.5~1米及>1米三个区间，灾害等级则依据法国环境与能源控制署（CEREMA）2009年的研究成果分为低、中、高三个级别。 水文地貌学分析方法对应的制图比例尺为1:10000，水力学模拟方法对应的制图比例尺为1:5000。