For me all of the look equally fine.
29 May 2019, 15:24 by joseph.eisenb...@gmail.com: > Which of the ways of tagging "irrigation" should be used? > > "irrigation=yes" works ok, but it hasn't been very popular the last few years > "service=irrigation" is still most common, but the key is a little odd > "usage=irrigation" makes sense and is increasing in usage > > See chart of usage over time: > https://wiki.openstreetmap.org/wiki/Tag:usage%3Dirrigation#Alternative_tagging > > I think "usage=irrigation" may be the best option. > > On 5/29/19, Joseph Eisenberg <joseph.eisenb...@gmail.com> wrote: > >>> Not sure about small rock-cut waterways with massive impermeable sides, >>> are these ditches or canals or drains? >>> >> >> We don't have these in the western USA, but generally our ditches are >> dug out of the soil, so I would be surprised to see a feature tagged >> as waterway=ditch if it were cut from bedrock or lined with stone. >> >> I'd think waterway=canal would be appropriate for these if they are >> large enough. >> >> One tag that's already used is canal=qanat for "a gently sloping >> underground channel or tunnel constructed to lead water from the >> interior of a hill to a village below", found in the Middle East >> >> If there are small irrigation waterways that area lined with stone (or >> concrete etc), we probably need a new tag, since waterway=drain is >> pretty strongly associated with drainage, not irrigation, and >> waterway=canal probably has a minimum width? >> >> >> On 5/29/19, Martin Koppenhoefer <dieterdre...@gmail.com> wrote: >> >>> >>> >>> sent from a phone >>> >>>> On 29. May 2019, at 03:37, Joseph Eisenberg <joseph.eisenb...@gmail.com> >>>> wrote: >>>> >>>> What, then, should be the distinguishing characteristic between >>>> waterway=canal and waterway=ditch or =drain? Width or importance or >>>> navigability, or should we still mention the usage as the main >>>> difference? >>>> >>> >>> >>> IIRR ditches were seen without construction like steel or concrete, just >>> a >>> man made depression to channel water, while drains are required to have >>> their borders (and maybe base) constructed. >>> >>> Not sure about small rock-cut waterways with massive impermeable sides, >>> are >>> these ditches or canals or drains? >>> >>> Stating the usage explicitly might help interpretation of the data, or >>> while >>> we’re still mapping fragments of an incomplete network, although I would >>> have guessed with a more mature mapping this could already be seen from >>> looking at the network structure and flow directions? >>> >>> What about the practical, human scale distinction we use for natural >>> waterways (can be jumped over), wouldn’t it be equally interesting for >>> man >>> made waterways? >>> Is a canal you can jump over still a canal, or does size somehow come >>> into >>> the equation? Can there be draining canals, or are these always drains? >>> >>> Cheers, Martin >>> _______________________________________________ >>> Tagging mailing list >>> Tagging@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/tagging >>> > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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