[Tagging] mapping qanats

John Sturdy jcg.sturdy at gmail.com
Fri Sep 27 11:00:38 UTC 2013

On Fri, Sep 27, 2013 at 11:18 AM, Matthijs Melissen
<info at matthijsmelissen.nl> wrote:
> According to Wikipedia, qanat's are known under different names in other
> parts of the world (kethara, galerias, foggara, ...). Wouldn't it be
> possible to use a more generic name?
> Also, wouldn't we be able to use waterway=canal, tunnel=yes (or whatever tag
> we use for underground waterways)? Possibly combined with qanat=yes?

Or perhaps waterway=canal, tunnel=yes, canal=qanat?

Or man_made=pipeline, location=underground, type=water?

I think I'd call it a pipeline if the water fills it to the roof of
the tunnel, and a canal if there's air above the water (which seems to
be the case, as Wikipedia mentions air from the tunnels being used for

If anyone's going to map to that level of detail, will "depth" refer
to the draught of the water channel (depth from bottom to top of the
water), or depth of the whole thing below the ground surface?

> That
> would increase the chance of them being rendered on general-purpose maps.


See also http://wiki.openstreetmap.org/wiki/Proposed_features/water_network


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