Flooding areas established by hydrogeomorphological methods in Lorraine and on the administrative district of the Rhine-Meuse basin

The dataset contains flood areas established by hydrogeomorphological methods in Lorraine and on the Rhine-Meuse Basin Administrative District

In Lorraine and on the administrative district of the Rhine-Meuse basin, when they were produced.

** Hydrogeomorphological flood: Maximum flooding area defined by the study of fluviatile hydrosystems. The demarcated area includes the minor bed, the major bed and the exceptional major bed of the watercourse. It corresponds to the flooding field of exceptional floods.

VERBATIM:
The flood zone atlas consists of three types of zoning: (the modelled centennial flood,the surface obtained by the hydrogeomorphological method, historical floods. The latter result from different methods and therefore have a different meaning. Any exploitation or representation of these data must be made knowingly with a distinction between the different zonings.

Data produced on the Large Flood Risk Territories (HRT) under the Flood Directive have not been added to previously produced Flood Hazardous Area Atlas (AZI) data. They should be added to supplement the AZI.

DATA QUALITY: The data are an aggregation of different data at various scales. The accuracy of the source data is indicated in the attributes.

本数据集收录了通过水文地貌学方法划定的洛林地区及莱茵-默兹流域行政区内的洪水淹没区域，上述数据集均生成于洛林地区与莱茵-默兹流域行政区范围内。
**水文地貌型洪水（Hydrogeomorphological flood）：** 通过河流水文系统研究划定的最大淹没范围。所划定的区域包含河道的副河槽、主河槽以及极端工况主河槽，对应极端洪水的淹没场域。
VERBATIM：本洪水分区图集包含三类分区：模拟百年一遇洪水区域、水文地貌法划定的淹没范围以及历史洪水区域。后一类分区基于不同方法生成，因此具有不同的物理内涵。对本数据集的任何使用或可视化呈现，均需明确区分各类分区。
根据《洪水指令》生成的大洪水风险区域（Large Flood Risk Territories, HRT）数据，尚未并入此前生成的洪水危险区域图集（Flood Hazardous Area Atlas, AZI）数据集，需补充至该图集以完善其内容。
**数据质量说明：** 本数据集为多尺度多源数据的聚合成果，源数据的精度信息已在属性字段中予以标注。