Ok, it looks like enough people feel that a very small artificial water body, like a decorative pond in a residential garden, shouldn't be tagged as water=reservoir or water=basin, so we need a replacement.
I can see the logic behind that, if a reservoir is thought to be larger and must have a dam on one side, and a basin is artificially graded. A small koi pond or decorative pool isn't exactly the same. The current problem with water=pond is that many are completely natural features, but almost all other values of water=* are clearly natural (or semi-natural), or clearly artificial, so water=pond is losing this information which otherwise should be conveyed by the key water=*. Since it is unlikely that we could check 1 million water=pond features quickly, it's not reasonable to redefine the meaning of this tag, but we can create a new tag or several replacement tags which are more specific, and encourage use of those instead. But we need to have a clear description which will translate into other languages and cultures. For example, in Papua Indonesia, most Trans-New Guinea languages use 1 word for all types of "water", including rivers, streams, lakes, and the sea, so they won't see a difference between a "lake" and a "pond" unless you clearly describe it. There are already several other more specific tags for small artificial water bodies, in use: (https://taginfo.openstreetmap.org/keys/?key=water#values) - water=reflecting_pool - "A reflecting pool: a water feature found in gardens, parks, and at memorial sites. It usually consists of a shallow pool of water, undisturbed by fountain jets, for a calm reflective surface." - water=moat - A deep, wide defensive ditch, normally filled with water, surrounding a fortified habitation. - water=wastewater - A clarifier/settling basin of a wastewater treatment plant. - water=fountain - water=fishpond And as mentioned before, there are water=reservoir (A reservoir <https://en.wikipedia.org/wiki/Reservoir> or an artificial lake is used to store water. ) and water=basin (An area of land artificially graded to hold water.) So perhaps we could create a new tag water=natural_pond for small, natural or semi-natural lakes which are currently tagged as water=pond, and water=artificial_pond or water=man_made_pond for the majority of water=pond features which are clearly not natural, such as ponds in gardens. -- Joseph Eisenberg On Tue, Nov 10, 2020 at 1:59 AM Andy Mabbett <a...@pigsonthewing.org.uk> wrote: > > On Tue, 10 Nov 2020 at 05:26, Joseph Eisenberg > <joseph.eisenb...@gmail.com> wrote: > > > I think the best option is to deprecate water=pond and suggest using water=lake for > > natural lakes, even small ones, and use water=reservoir or water=basin (or > > landuse=reservoir or =basin if you prefer) for the artificial ones.
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