Specific watersheds - Metropolis - State of the Places Version 2019

‘Specific water catchment area’ means the area bounded by a contour called a ridge line, within which the precipitated water flows and ends up directly reaching the body of water without passing through another body of water. The creation rules to be taken into account are: A/ Case of a water body non-artificial watercourse - The outlets upstream and downstream of the body of water stream, - There is no inclusion of another body of water in the specific catchment area. B/ Case of a body of water artificial watercourse: it does not have a specific catchment area. C/ Case of a body of water body of water - Artificial or not, it must have a specific watershed, - In the case of a gravel pit: We will resume its perimeter as a specific watershed. The topographic watershed will be reused if the available information is sufficiently detailed. D/ Case of a coastal water body - The specific catchment area corresponds to the body of coastal water enriched by its topographical catchment area (e.g. any coastal watercourses not identified as waterbody watercourses, etc.) with the exception of what belongs to another waterbody. The entire national administrative territory is covered by specific water body catchment areas. A specific catchment area may not contain a body of continental surface water in the following cases: - Coastal watercourses of the hydrographic reference system not identified as watercourse bodies, - Watershed heads going abroad, - Endoreic zone: This one will be defined only by taking the outline of the endoréic zone. Layers shall be disseminated in a format compliant with the SANDRE Data Dictionary of the Water Body Repository, version 1.4.