I have a topic started at Belgium forum about tagging waterways, and
found a link about 'Flanders classification-system' ->
https://forum.openstreetmap.org/viewtopic.php?pid=659424#p659424
Also, me thinks ; 'keep it simple' ... meaning ; all things, and also
waterways can have a wikidata-code-number ->
https://www.wikidata.org/wiki/Wikidata:Main_Page
which links to wikipedia (and other links), and there, on wikipedia can
one find/define then a broad description of that waterway(or other
'thing') .
Also, we, on OSM , have often to choose between ;
'very small' waterway = *ditch* (or some tag it as 'drain' ) *width < 1
meter *
'small waterway' = *stream width 1 - 3 meter*
'big(ger) waterway = *river width > 3 meter*
that's my thinking about ->
the commonly accepted rule for OpenStreetMap is that a stream can be
jumped across by an active, able-bodied person
<http://wiki.openstreetmap.org/wiki/Tag:waterway%3Dstream>
<http://wiki.openstreetmap.org/wiki/Tag:waterway%3Dstream>
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