[Tagging] Seasonal, intermittent, and ephemeral water tags

Andrew Davidson theswavu at gmail.com
Tue May 29 10:50:15 UTC 2018

On 26/05/18 23:27, Tod Fitch wrote:
> Those definitions match up with my understanding. So something like
> waterway=* (or natural=spring | water )
> presence=perennial | seasonal | intermittent | ephemeral
> If the presence is seasonal, then the existing seasonal=* could be used 
> to describe what times of year the item is normally present.

As well as presence other options for a new tag would be:

*persistence eg:


*permanence eg:


Permanence seems to be the more commonly used term.

I wouldn't include the seasonal value as there is already a seasonal key 
and we should use that.

In effect what I think we need is to generalise the existing stream key:


so it can be used on other water objects (assuming that people would 
think that natural=wetland + stream=ephemeral would look odd--otherwise 
no need for a new key).

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