[Tagging] Seasonal, intermittent, and ephemeral water tags

Tod Fitch tod at fitchdesign.com
Sat May 26 13:27:27 UTC 2018


> On May 26, 2018, at 12:02 AM, Warin <61sundowner at gmail.com> wrote:
> 
> My take  for water bodies:
> 
> Perennial: I expect to find water here at any time. Exceptions: drought
> 
> Seasonal: I expect to find water here on a yearly cycle, usually for months. Exceptions: drought
> 
> Intermittent: I don't expect to find water here. Exceptions: heavy rainfall or snow melt. The water could be here for some time .. up to 2 months. 
> 
> Ephemeral: I don't expect to find water here. Exceptions: heavy rainfall or snow melt. The water can only be here for a short time .. less than a week, usually a day or less.
> 

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.


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