On 9/5/2016 4:34 AM, Greg Wickham wrote:
In Saudi Arabia a wadi is a mostly dry riverbed that carries water
very infrequently (maybe a couple of times year).
Within most sandy bottomed wadi’s is at least one track (typically 4wd).
The exact location of the track within the wadi will change due to
occasional flooding events.
I’ve read the discussion summary at
http://wiki.openstreetmap.org/wiki/Talk:Tag:waterway%3Dwadi
<http://wiki.openstreetmap.org/wiki/Talk:Tag:waterway=wadi> but
I’m still not clear exactly how to tag this feature?
It seems:
- waterway=wadi
- intermittent=yes
is ok.
But how to indicate can be vehicle track?
Is it ok to mark a track in the “rough” vicinity (i.e.: the track path
will change between flooding events)?
Should the wadi “line” be marked in the centre between the edges?
Would these tags be ok for a: “sandy bottomed wadi; 4wd only"
waterway = wadi
intermittent = yes
highway = track
tracktype = grade4
4wd_only = yes
surface = unpaved
Suggestions welcome.
In an ideal world;
the wadi would be a way along the lowest path - where water would first
flow.
the track would be a separate way
For less work a mapper would combine these into one way ... that makes
rendering harder.
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