[Tagging] Dangerous waterways tagging

François Lacombe fl.infosreseaux at gmail.com
Tue Jul 24 08:49:42 UTC 2018


Hi Graeme,

2018-07-24 0:12 GMT+02:00 Graeme Fitzpatrick <graemefitz1 at gmail.com>:

>
> On 24 July 2018 at 06:48, François Lacombe <fl.infosreseaux at gmail.com>
> wrote:
>
>>
>> Then what could be the best way to tag it?
>> No existing tag sounds suitable for this, even the idea of a single
>> "permanence" key.
>>
>
> I think intermittent would still be correct, because the water is only
> sometimes there?
>

No because water always flows, look at the left picture on the danger sign.
It's just that sometimes, hydroelectric operator releases big amount of
water wich completely and quickly flood the river bed.


> Saw reference to https://wiki.openstreetmap.org/wiki/Tag:waterway%3Driverb
> ank#Varying_water_level_river which also suggests use of a
> flood_prone=yes tag, which may also work, possibly together with a
> max_depth tag?
>

flood_prone could be a solution, but it's currently intended for monsoon or
snow melt moments, not for few hours or minutes of human controlled
flooding.

All the best

François
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