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<div style="16px" text-align="left">For me all of the look equally fine.<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">29 May 2019, 15:24 by joseph.eisenberg@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div style="16px" text-align="left">Which of the ways of tagging "irrigation" should be used?<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">"irrigation=yes" works ok, but it hasn't been very popular the last few years<br></div><div style="16px" text-align="left">"service=irrigation" is still most common, but the key is a little odd<br></div><div style="16px" text-align="left">"usage=irrigation" makes sense and is increasing in usage<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">See chart of usage over time:<br></div><div style="16px" text-align="left">https://wiki.openstreetmap.org/wiki/Tag:usage%3Dirrigation#Alternative_tagging<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">I think "usage=irrigation" may be the best option.<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">On 5/29/19, Joseph Eisenberg <joseph.eisenberg@gmail.com> wrote:<br></div><blockquote><blockquote><div style="16px" text-align="left">Not sure about small rock-cut waterways with massive impermeable sides,<br></div><div style="16px" text-align="left">are these ditches or canals or drains?<br></div></blockquote><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">We don't have these in the western USA, but generally our ditches are<br></div><div style="16px" text-align="left">dug out of the soil, so I would be surprised to see a feature tagged<br></div><div style="16px" text-align="left">as waterway=ditch if it were cut from bedrock or lined with stone.<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">I'd think waterway=canal would be appropriate for these if they are<br></div><div style="16px" text-align="left">large enough.<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">One tag that's already used is canal=qanat for "a gently sloping<br></div><div style="16px" text-align="left">underground channel or tunnel constructed to lead water from the<br></div><div style="16px" text-align="left">interior of a hill to a village below", found in the Middle East<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">If there are small irrigation waterways that area lined with stone (or<br></div><div style="16px" text-align="left">concrete etc), we probably need a new tag, since waterway=drain is<br></div><div style="16px" text-align="left">pretty strongly associated with drainage, not irrigation, and<br></div><div style="16px" text-align="left">waterway=canal probably has a minimum width?<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">On 5/29/19, Martin Koppenhoefer <dieterdreist@gmail.com> wrote:<br></div><blockquote><div style="16px" text-align="left"><br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">sent from a phone<br></div><blockquote><div style="16px" text-align="left">On 29. May 2019, at 03:37, Joseph Eisenberg <joseph.eisenberg@gmail.com><br></div><div style="16px" text-align="left">wrote:<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">What, then, should be the distinguishing characteristic between<br></div><div style="16px" text-align="left">waterway=canal and waterway=ditch or =drain? Width or importance or<br></div><div style="16px" text-align="left">navigability, or should we still mention the usage as the main<br></div><div style="16px" text-align="left">difference?<br></div></blockquote><div style="16px" text-align="left"><br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">IIRR ditches were seen without construction like steel or concrete, just<br></div><div style="16px" text-align="left">a<br></div><div style="16px" text-align="left">man made depression to channel water, while drains are required to have<br></div><div style="16px" text-align="left">their borders (and maybe base) constructed.<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">Not sure about small rock-cut waterways with massive impermeable sides,<br></div><div style="16px" text-align="left">are<br></div><div style="16px" text-align="left">these ditches or canals or drains?<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">Stating the usage explicitly might help interpretation of the data, or<br></div><div style="16px" text-align="left">while<br></div><div style="16px" text-align="left">we’re still mapping fragments of an incomplete network, although I would<br></div><div style="16px" text-align="left">have guessed with a more mature mapping this could already be seen from<br></div><div style="16px" text-align="left">looking at the network structure and flow directions?<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">What about the practical, human scale distinction we use for natural<br></div><div style="16px" text-align="left">waterways (can be jumped over), wouldn’t it be equally interesting for<br></div><div style="16px" text-align="left">man<br></div><div style="16px" text-align="left">made waterways?<br></div><div style="16px" text-align="left">Is a canal you can jump over still a canal, or does size somehow come<br></div><div style="16px" text-align="left">into<br></div><div style="16px" text-align="left">the equation? Can there be draining canals, or are these always drains?<br></div><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">Cheers, Martin<br></div><div style="16px" text-align="left">_______________________________________________<br></div><div style="16px" text-align="left">Tagging mailing list<br></div><div style="16px" text-align="left">Tagging@openstreetmap.org<br></div><div style="16px" text-align="left">https://lists.openstreetmap.org/listinfo/tagging<br></div></blockquote></blockquote><div style="16px" text-align="left"><br></div><div style="16px" text-align="left">_______________________________________________<br></div><div style="16px" text-align="left">Tagging mailing list<br></div><div style="16px" text-align="left">Tagging@openstreetmap.org<br></div><div style="16px" text-align="left">https://lists.openstreetmap.org/listinfo/tagging<br></div></blockquote><div style="16px" text-align="left"><br></div> </body>
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