<html><head></head><body>Hello,<br>That seems information a bit too complex to maintain in OSM, don't you think? I have a sense we should map the flood area and the station, but let the ad-hoc services do the flood risk management.<br>Maybe I'm wrong.<br>Yves <br><br><div class="gmail_quote">Le 13 février 2021 23:04:32 GMT+01:00, Andy Townsend <ajt1047@gmail.com> a écrit :<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre dir="auto" class="k9mail">Hello,<br><br>There are a few tags already in use for flood-prone areas (see <br><a href="https://taginfo.openstreetmap.org/search?q=flood">https://taginfo.openstreetmap.org/search?q=flood</a> ), with <br><a href="https://taginfo.openstreetmap.org/tags/flood_prone=yes">https://taginfo.openstreetmap.org/tags/flood_prone=yes</a> being the most <br>common.<br><br>However in the UK and I'm sure in lots of other places there is a <br>network of monitoring stations on rivers, such as here: <br><a href="https://www.openstreetmap.org/node/8373389773">https://www.openstreetmap.org/node/8373389773</a> . There are lots of them:<br><br><a href="https://flood-warning-information.service.gov.uk/river-and-sea-levels?location=york">https://flood-warning-information.service.gov.uk/river-and-sea-levels?location=york</a><br><br>It's possible to estimate when a particular location on a river will be <br>flooded based on the downstream (and to a lesser extent upstream) <br>monitoring station level. Has anyone considered linking these together <br>in any way? So far I've added a note on e.g. <br><a href="https://www.openstreetmap.org/way/37535250">https://www.openstreetmap.org/way/37535250</a> to say "When <br><a href="https://www.openstreetmap.org/node/8373389773">https://www.openstreetmap.org/node/8373389773</a> says 2.7m, flooded here", <br>but some more formal way of saying that would make sense. I can happily <br>invent something, but don't want to do that if an existing tagging <br>already exists.<br><br>Best Regards,<br><br>Andy<hr>Tagging mailing list<br>Tagging@openstreetmap.org<br><a href="https://lists.openstreetmap.org/listinfo/tagging">https://lists.openstreetmap.org/listinfo/tagging</a><br></pre></blockquote></div></body></html>