On Sunday 24 January 2016, Andy Mabbett wrote: > > > Mires fed by > > groundwater or water inflow from the outside are usually not bogs. > > See: > > > > https://en.wikipedia.org/wiki/Mire > > That's contradicted by: > > https://en.wikipedia.org/wiki/Bog
Well - I don't want to pass judgement here on the articles - I only provided the link because it contains a well readable description of the differences. That being said the bog article is quite clearly not a shining example of quality in Wikipedia. The established values for wetland=* in OSM are mostly based on wetland classification schemes common in North America which generally make the distinction between bogs and fens as indicated. You can find this for example on: http://www.water.ncsu.edu/watershedss/info/wetlands/types3.html http://www.epa.gov/wetlands/wetlands-classification-and-types http://www.env.gov.yk.ca/animals-habitat/documents/canadian_wetland_classification_system.pdf which is of course somewhat biased towards the types of wetland common in the region. There would be no problem in using more precise tags more clearly distinguishing the nuances in wetland types. There is already some limited use of wetland=string_bog/palsa_bog/raised_bog. Current tag use indicates severe underuse of wetland=fen and overuse of wetland=bog. Probably more than half of what is tagged wetland=bog is actually incorrect. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
