[Tagging] how to tag: water enclosure beneath fountains

Richard Smith rich at haveyougotanypets.com
Mon Oct 1 16:30:45 BST 2012

If this pool of water has the main purpose of feeding the fountain I would
consider this to be a landuse=reservoir for the following reasons:
* Its wiki description fits: "Man made body of stored water. May be covered
or uncovered.")
* It has a well defined, used and even rendered subtag of reservoir_type=*
that could be set to fountain or a similar tag, so it will probably show up
and be visually useful in a number of common renderers straight away.
* As a reservoir does not always have to be full this tag nicely sidesteps
the issue someone raised of whether there is water there or not.
* It can be used to tag over and underground storage areas for
a fountain if the user so wishes.

As Google "define:fountain" as "An ornamental structure in a pool or lake
from which one or more jets of water are pumped into the air." I would
personally tag the whole area of the fountain with the
current amenity=fountain tag and would only tag the sub area of the
fountain the held water (or chocolate) with the reservoir tag.

If the pool of water's main purpose was ornamental with a fountain being
a sub feature (as is often the case in grand houses and gardens where the
are large areas of water with fountains dotted about them) I would be less
tempted to use the reservoir tag and instead only tag the actually spraying
area as fountain and tag the other area as something else pond perhaps or

- Richard

On 1 October 2012 15:29, Ronnie Soak <chaoschaos0909 at googlemail.com> wrote:

> 2012/10/1 Martin Koppenhoefer <dieterdreist at gmail.com>:
> >>
> >> natural=water
> >>
> >> - wiki page doesn't specify, but details, examples and name imply the
> >> use for a natural feature
> >
> >
> > IMHO natural=water is flawed, for several reasons: it is not a
> > geographical feature (that would be natural=lake, etc.), but it is
> > also practically used for all kinds of superficial water (and if one
> > insists on "natural=from mother nature": water is almost always
> > "natural", the rare cases of "artificial" water aren't probably
> > something that will be tagged in OSM). There is an attempt to further
> > specifiy natural=water with a key water=? (where one of the values is
> > reflection_pool IIRR)
> >
> Of course there is no 'artificial' water. But following this logic, we
> can also tag a pedestrian area with natural=cobble_stones.
> It's the enclosure of the water that is man made and mostly even the
> existence of water in that spot.
> I would rather use a man_made=reflection_pool without the natural=*
> addition.
> >
> >
> >> Do you know any other tag fitting small scale, urban, man made
> >> enclosures of water (possibly fed by a fountain or well)?
> >
> >
> > if you want to be generic like this, natual=water is your tag IMHO. If
> > you are interested in a particular feature, additionally tag this
> > (e.g. amenity=fountain, water_well, ...)
> >
> >
> >> Or just keeping it with amenity=fountain mapped as an area? Or tag both?
> >
> >
> > well, a fountain might consist of parts covered with water and others
> > made of rock, metal or s.th. else, and there might even be no water at
> > all (any more), e.g. here is a nice monumental fountain by famous
> > architect Bernini in a small town that was destroyed (and remained
> > ruins since then) in 1799 by the French:
> > http://it.wikipedia.org/wiki/File:Canale_Monterano_Bernini.JPG
> I can't follow you here: You say that natural=water is flawed, that
> there might be fountains without water and that a fountain might
> consist of several materials besides water.
> And still you recommend to tag the whole area as natural=water,
> amenity=fountain?
> Regards,
> Chaos
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