Rennes Métropole Hydrographic Network

This layer of polygons makes it possible to represent the surface hydrographic network on Rennes Métropole. Watercourses and bodies of water are mainly represented. This layer is the aggregation of visible and invisible surfaces (hydro_visible field) of the data used for the communal and intercommunal city plan (PVCI). Other available fields include: \- hydro_visible: stream or body of water visible from the sky (true or false); \- type_hydro_name: type of stream or extent of water; \- deno_hydr_name: name of the course or extent of water.该多边形图层可用于表征雷恩都会区（Rennes Métropole）的地表水文网络。本图层主要呈现河道与水体两类核心要素。 本图层由服务于市镇及跨市镇城市规划（PVCI）的数据源聚合生成，其中的水文地表要素通过hydro_visible字段标记为可见或不可见。 其余可用字段如下： - hydro_visible：用于标识河道或水体是否可从空中目视辨识，字段取值为真或假； - type_hydro_name：用于标注河道或水体的类型； - deno_hydr_name：用于标注河道或水体的名称。