On Thursday 09 May 2019, Joseph Eisenberg wrote: > I discovered that maritime=yes has been used about 100 to 150 times > to tag areas of river estuaries that should be considered part of the > marine environment. > > [...]
I introduced this tag for this purpose to indicate water polygons where mappers insist on closing the coastline outside of them even though they ecologically belong to the maritime domain and would be placed on the wet side of the coastline according to https://wiki.openstreetmap.org/wiki/Proposed_Features/Coastline-River_transit_placement By far the largest example of this is https://www.openstreetmap.org/relation/3474227 But there are countless other cases both with and without the maritime tag. I have essentially stopped trying to maintain this information within OSM and use either heuristics based on the geometries or external data to draw the line between maritime and inland water areas. This is immensely sad for OSMs ability to record even the most basic information about the physical geography of Earth. But it is not really right to just blame mappers for this because the vast majority of data users also just don't care. > But I wonder if it wouldn't be better to make a different tag for the > usage on marine rivers and estuaries? This would make it possible to > keep the tag marine=yes defined for use on administrative boundaries > only. I see no need for that since there are no collisions between the two - maritime boundaries are never geometrically identical to water polygons. The tag maritime=yes is exactly fitting here - this is to indicate a water polygon ecologically belongs to the maritime domain. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging