[Tagging] Start of a river

[Stephan Knauss]

how about extending the waterway relation with a member role which can 
indicate either the "spring" or the "source" in case of a "creation" of 
a river by multiple tributary rivers?

Not sure how it would best be called. Source? Origin? Confluence? Is 
there a specific hdyrology term for this?

Wikipedia might indicate that "source" is the right word to use.

https://en.wikipedia.org/wiki/Confluence

https://en.wikipedia.org/wiki/River_source

If this is also suitable for a spring, then changing the role spring to 
source would do the trick.

https://wiki.openstreetmap.org/wiki/Relation:waterway

While you update the wiki: I feel the "tributary" role also deserves to 
be documented in the wiki page. It is used nearly 7.000 times.

Stephan


On 26.02.2017 09:41, Dave Swarthout wrote:
> That's interesting. I wonder if the tagging of tourism=attraction is
> totally appropriate but surely a waterway=source tag is. Presumably the
> mapper was trying to indicate that the source of that stream is where
> that node is.
>
> I'm going to start using the tag myself and let data consumers figure it
> out if they wish. After a while I'll consider adding it to the Wiki.
> There are a few instances of the tag in use already.
>
> On Feb 26, 2017 2:23 PM, "Martin Koppenhoefer" <dieterdreist at gmail.com
> <mailto:dieterdreist at gmail.com>> wrote:
>     The point where it starts doesn't (yet) have any meaningful tags,
>     just a property disguised as a
>     feature: http://www.openstreetmap.org/node/135500355