I think my problem in particular is determining when it is navigable or not. It's like the difference between seasonal=* (predictable) and intermittent=* (unpredictable), my case is the intermittent one.
The local authority does not publish depth information about the rivers, but publishes vessel draft. Historic depth data from river monitoring stations show that some are navigable most of the time, but can become shallow any month of the year, depending on the amount of rainfall. Over the last 10 years, records of one river reveal depths varying from ~0.5m to ~10m, and both minimum and maximum are reached every month (but the pattern changes year-to-year due to irregular rain). In contrast, the rivers that are continuously navigable, mostly shipping routes, are actively maintained by authorities to ensure the published draft applies at all times. On Fri, Feb 15, 2019 at 4:35 PM Richard Fairhurst <[email protected]> wrote: > > Fernando Trebien wrote: > > motorboat:conditional only works if the periods where the river > > is navigable are predictable, and that usually depends on the > > variable amount of rain on the basin. > > motorboat= is an access tag, so it represents whether a use class is > permitted on that way, not whether it's possible. > > I'd think a variant on depth= would be most appropriate. Something like > depth:summer=0.5-3.0 might indicate that the river depth in summer can > typically vary between 0.5m (i.e. only a canoe at a pinch) and 3m. Defining > "typically" is left as an exercise to the reader. :) > > Richard > > > > -- > Sent from: http://gis.19327.n8.nabble.com/Tagging-f5258744.html > > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging -- Fernando Trebien _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
