2016-06-20 10:48 GMT+02:00 Christoph Hormann <chris_horm...@gmx.de>: > If you want to do something productive you could clean up the frequent > occurences of duplicate and sometimes contradicting tags on member ways > and multipolygon relations for river mapping. One of the problems of > the waterway=riverbank tag is that it was originally meant and is > widely understood to be a way tag while today it should normally be > applied to the multipolygons relation. Cleaning up such ambiguities - > not mechanically as it has been suggested in the past but with > individual verification - using either waterway=riverbank or > natural=water + water=river would be a very good deed. >
I'd like to add to this that on a semantic / natural language level, waterway=riverbank (deliberately ignoring long standing, widespread use and acceptance) would seem to indicate a riverbank, i.e. the bank of a river, or in other words, the area along a river, which will occassionally but not always be flooded. I am at this point not proposing to remap all of these (unless there would be compelling agreement by many mappers), as this is a longstanding, very widespread tag (293.000 occurences, 31.700 of them relations) with supposedly uniform usage, but it should be noted that there are issues with it on a logical level. Cheers, Martin
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