[Tagging] New description of waterway=pressurised

Nita Rae Sanders cosmicrae at gmail.com
Mon Jun 3 20:27:36 UTC 2019

Here is one possible example of what you seem to be describing … way 84255726

Within Florida's Oleno State Part, the Santa Fe River vanishes into a
sinkhole. It then reappears at River Rise Preserve State Park. the
route, as depicted in the way (a mile +/-), is the presumed
subterranean path. The way is tagged as tunnel=yes, which seems odd,
yet descriptive (but as a tunnel, it would be natural and not

On 6/3/19, François Lacombe <fl.infosreseaux at gmail.com> wrote:
> Hi Joseph,
> Le sam. 1 juin 2019 à 12:07, Joseph Eisenberg <joseph.eisenberg at gmail.com>
> a écrit :
>> Are there currently any natural siphons tagged as waterway=pressurised in
>> the database?
>> How would a mapper know that a natural siphon exists?
> As some mapper may be speleologists, like other mapper can be climber or
> any activity requiring special skills, we may take advantage of their
> experience and welcome their contribution to document what they saw
> underground
> If you have to dive to progress in a cave, it's surely because of siphons I
> guess.
> Wouldnt they be tagged as waterway=river or =stream based on those
>> definitions?
> No, both stream and river are free flow whereas a siphon is a pipe flow
> waterway.
> I'm not against a better word than pressurised, especially to keep a line
> between natural and man made structures.
> As previous mail stated that, you should write a proposal and vote it to
> make waterway=pressurised dedicated to man made structures and a new term
> for natural siphons.
> All the best
> François

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