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Hi<br>
<br>
This is another one of those discussion which comes up every year or
so.<br>
<br>
The perception of danger is subjective; which never fits well within
OSM. <br>
<br>
Waterways are not dangerous in themselves. They are inanimate
objects. They don't jump out & attack you as you walk by. It's
the naive way people interact with them which causes injury.<br>
<br>
If there's a sign indicating danger, tag that.<br>
<br>
Cheers<br>
DaveF<br>
<br>
<div class="moz-cite-prefix">On 23/07/2018 21:48, François Lacombe
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAG0ygLf4NCmR_X-z47oS2C5BZx9gqSd-QkgDuQP_c-QO0tgtOA@mail.gmail.com">
<div dir="ltr">
<div>Hi,</div>
<div><br>
</div>
<div>As the discussion about intermittent/seasonal/... on
waterways goes on, there is another thing to map: how
waterways banks can be dangerous due to sudden rise or lower
water level.</div>
<div>It is actually related to what we intend to map with
intermittent or seasonal.</div>
<div><br>
</div>
<div>For example in France, we often find such warning signs:</div>
<div><a href="https://imgur.com/a/QUxuPem"
moz-do-not-send="true">https://imgur.com/a/QUxuPem</a></div>
<div><br>
</div>
<div>Precise sections of streams or rivers are marked as
dangerous even in good weather.</div>
<div>It is stronger than simple intermittence or seasonality
because of industrial activities running upstream (mainly
hydroelectric power generation or dam operation).</div>
<div>Nevertheless, I didn't find any global database or public
information displaying data about such particular flooding
situations. OSM can be one of this kind.<br>
</div>
<div><br>
</div>
<div>Here is a public display next to a power plant in French
Alps (with a nice piece of OSM without attribution)</div>
<div><a href="https://imgur.com/a/TLhZcgE"
moz-do-not-send="true">https://imgur.com/a/TLhZcgE</a><br>
</div>
<div><br>
</div>
<div>Then what could be the best way to tag it?<br>
</div>
<div>No existing tag sounds suitable for this, even the idea of
a single "permanence" key.</div>
<div><br>
</div>
<div>All the best</div>
<div><br>
</div>
<div>François</div>
</div>
<br>
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<br>
<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
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