On Friday 07 September 2018, Joseph Eisenberg wrote: > But I am uncertain what to do with the waterway=river in the case of > tidal channels and the complex connections between rivers in these > mangrove areas. A search of taginfo did not find an alternative tag, > although river=tidal is in use. I think there should still be a > waterway midline for the large tidal channels in the mangroves which > can be used by boats or even ships, to help navigation software. > (Many of these channels were actually created by flowing river water; > the rivers in this area meander strongly and often change the > location of the mouth, as can be seen by comparing the current > situation to 100 year old Dutch maps)
There is no requirement of river lines to end at the coastline - plenty of situations where this is not the case and the documentation also explicitly mentions the possibility: https://www.openstreetmap.org/way/5005576 https://www.openstreetmap.org/way/487506679 https://www.openstreetmap.org/way/550322860 This only applies for the seaward continuation of a river, for a tidal channel without any significant freshwater inflow waterway=river would be wrong - like here: https://www.openstreetmap.org/way/401730961 https://www.openstreetmap.org/way/401730966 https://www.openstreetmap.org/way/570038402 This - just like polygon mapping of similar features: https://www.openstreetmap.org/way/559890030 https://www.openstreetmap.org/way/559890031 https://www.openstreetmap.org/way/425143314 https://www.openstreetmap.org/way/425186522 https://www.openstreetmap.org/way/291218813 can be considered label placement mapping without any real verifiable meaning. If you want to map such things with a geometry other than a node you should first create a verifiable definition of the geometry (which seems hard) - otherwise you always end up with this kind of label drawing. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
