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Il giorno 26 set 2016, alle ore 00:58, Colin Smale <colin.sm...@xs4all.nl> ha scritto: >> Problems of defining a boundary exist with river banks too. > That is rather obvious - the area which is covered by water can be a > continuum, depending on the conditions at any given moment. > yes, that's why there are recommendations how to deal with it: http://wiki.openstreetmap.org/wiki/Tag:waterway%3Driverbank#Varying_water_level_river cheers, Martin
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