> On May 26, 2018, at 12:02 AM, Warin <61sundow...@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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