[Tagging] Feature Proposal - RFC - waterway=tidal_channel

François Lacombe fl.infosreseaux at gmail.com
Sat Jul 6 15:26:22 UTC 2019


Le sam. 6 juil. 2019 à 16:39, Joseph Eisenberg <joseph.eisenberg at gmail.com>
a écrit :

>
> I don't know if the tag "direction=both" is used commonly with
> waterways. There's no wiki page to describe this tag, and the page
> Key:direction doesn't mention direction=both, though it's used 20,000
> times. More common is to add the tag "tidal=yes" to river estuaries
> which are clearly affected by the tides, though this does not
> necessary require reversal of water flow direction.
>

It seems there was communication issues during past proposals.
flow_direction was introduced by sinks proposal in 2017 :
https://wiki.openstreetmap.org/wiki/Tag:flow_direction%3Dboth
direction=both was mentioned in waterway=pressurised proposal to solve
situations when water goes down and can be pumped back in water pumped
power plants
https://wiki.openstreetmap.org/wiki/Talk:Proposed_features/Hydropower_water_supplies#Pumped_storage_power_plants
Sounds like flow_direction is more suitable to deal with water flows

Apart from this issue, tidal=yes isn't the best option (recent discussions
had show that yes/no only tags should be completed with more representative
values)
What about flow_direction=tidal ?

All the best

François
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