[talk-au] How to tag reaches (segments of a waterway)?

Andrew Harvey andrew.harvey4 at gmail.com
Sat Apr 9 09:22:49 BST 2011

I would like to map some named reaches ("straight portion of a stream
or river, as from one turn to another;") part of a major river.

The river (e.g.
) currently has both a riverbank area drawn, and a way down the middle
of the river. To make things even more complicated, the way running
down the middle of the river has both waterway tags and administrative
boundary tags.

I'm thinking the ideal way to map this (reaches + river + admin
boundary) would be split the way into segments for each reach, tag
each segment as waterway=reach, name=Foo Reach, then collect up the
river segments into a relation which contains waterway=river, name=Bar
River, and just leave the riverbank area as is. Not sure what to do
with the admin boundary tags though.

I'm not sure what's best though. Any thoughts? Thanks.

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