> I would not want to request to be able to distinguish high and low water in > order to be able to map administrative boundaries
But since the administrative boundary is defined by the "Baseline" or low water springs tide line, that's what should be mapped. Certainly it is incorrect to add the administrative boundary tags to the same way as the coastline (or add these ways to a boundary relation) if the administrative boundary is defined differently - and it almost always is. If mappers do not have a good source for administrative boundaries, they should not be mapped. Usually these need to be imported from an official source, since they are politically-defined, not based on the actual, physical shoreline. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging