To people using this tag: please, update and clarify documentation of this tag on OSM wiki. For example it is even unclear whatever it should be expected that it can be applied to canals no longer filled with water.
"used for transportation, waterpower, or irrigation" so filled by water seems intended as implied - but canal that is drained and converted into cycleway also fits "transportation". On the other hand name (at least for me) implies canal where earthwork is present but is no longer filled with water. See http://wiki.openstreetmap.org/wiki/Tag:waterway%3Dderelict_canal and https://github.com/gravitystorm/openstreetmap-carto/issues/1003 _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
