[Tagging] "Feature Proposal - RFC - Qanat"

[Joseph Eisenberg]

> Most existing uses of man_made=qanat by the way are in combination with
waterway=canal.

Thank you for mentioning this. There are only 5 ways with man_made=qanat,
without waterway=* - https://overpass-turbo.eu/s/Viq

I will update the proposal page with this information.

So there is no debate about whether or not to tag these features with
waterway=canal.

We are deciding whether or not the additional tag should be man_made=qanat
or canal=qanat.

Since waterway=canal is currently used for all kinds of irrigation canals
and aqueducts, it makes sense to consider these irrigation features to be a
type of canal.

I have previously considered whether or not it might be sensible to create
a whole new value of waterway=* for aqueducts and irrigation canals, but
that does not seem to solve any particular problems: irrigation canals can
be as narrow as 20 cm or as wide as 20 meters, as can aqueducts used for
drinking water, so tagging usage=irrigation and width=*, while using the
existing main tag, is probably reasonable.

– Joseph Eisenberg

On Sat, Jun 20, 2020 at 5:17 AM Christoph Hormann <osm at imagico.de> wrote:

>
> I think this is a good idea.  Both in the sense of establishing a distinct
> tagging for it that does not engross qanats with other types of underground
> waterways and in the sense of using a non-English and non-European term
> where the most descriptive and clear term comes from a non-European
> language.  We have other cases of such tags in OSM but still in a proposal
> process which is dominantly discussed in English this is rare and kind of a
> litmus test for how culturally diverse tagging in OSM can be and if the
> cultural geography of non-European regions can be mapped in the
> classifications used locally just as we are used to doing it in Europe and
> North America.
>
> Most existing uses of man_made=qanat by the way are in combination with
> waterway=canal.
>
> --
> Christoph Hormann
> http://www.imagico.de/
>
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20200620/193f26b6/attachment.htm>