Re: "volume, elevation and sometimes particular usage" I don't think mappers can know the maximum volume or capacity of a water reservoir or water basin, unless it is written on a public sign somewhere? We can map the surface area, but knowing the average depth or maximum depth is quite difficult, especially when it is not uniform. However for man_made=reservoir_covered and =storage_tank we have capacity=* (in cubic meters?) and content=water/sewage/etc.
It is possible to use ele=* for the elevation of the surface of the water if a mapper has a very good GPS or finds this info on a sign, but this information is also widely available from digital elevation models. The usage is not often tagged yet, since this might be hard for a mapper to know. Currently for landuse=reservoir and water=reservoir this is some use of reservoir_type= - https://wiki.openstreetmap.org/wiki/Key:reservoir_type - with values of water_storage, sewage, tailings, evaporator, tank, salt_pan, wastewater, slurry, irrigation, aquicultura, cooling, etc - though only the first 4 are at all common. basin=* is used with landuse=basin or water=basin to describe the form and function of the basin: - basin <https://wiki.openstreetmap.org/wiki/Key:basin>=infiltration <https://wiki.openstreetmap.org/wiki/Tag:basin%3Dinfiltration> - An infiltration basin <https://en.wikipedia.org/wiki/en:Infiltration_basin> catches storm water and allows it to seep into an aquifer <https://en.wikipedia.org/wiki/en:aquifer>. - basin <https://wiki.openstreetmap.org/wiki/Key:basin>=detention <https://wiki.openstreetmap.org/wiki/Tag:basin%3Ddetention> - A detention basin <https://en.wikipedia.org/wiki/en:Detention_basin> catches storm water and allows it to drain slowly into natural waterways. - basin <https://wiki.openstreetmap.org/wiki/Key:basin>=retention <https://wiki.openstreetmap.org/wiki/Tag:basin%3Dretention> - A retention basin <https://en.wikipedia.org/wiki/en:Retention_basin> catches storm water and retains it, forming an artificial pond. And note that salt ponds (used to evaporate salt from sea-water) are tagged as landuse <https://wiki.openstreetmap.org/wiki/Key:landuse>=salt_pond <https://wiki.openstreetmap.org/wiki/Tag:landuse%3Dsalt_pond> Pools for swimming are leisure <https://wiki.openstreetmap.org/wiki/Key:leisure>=swimming_pool <https://wiki.openstreetmap.org/wiki/Tag:leisure%3Dswimming_pool> I don't see many combinations with usage=* or another tag that might describe how the reservoir or basin is used, so perhaps this could be proposed? -- Joseph Eisenberg On Thu, Dec 17, 2020 at 10:36 AM François Lacombe <fl.infosrese...@gmail.com> wrote: > Hi all > > I'm ashamed to not have enough time to be involved in all discussions > regarding reservoir, ponds, basins and so on... and thank you to make such > a capital topic on the table > I'd be happy with a tagging that separates the structure, the water body > and purpose of a given feature. > > Have a look to Storage chapter in this page (probably lacks many thing, > it's just a start) > https://wiki.openstreetmap.org/wiki/Water_management > > There are at least 5 ways to tag features involved in (potable) water > storage > What if I'm only interested to find "water storage places" with their > volume, elevation and sometimes particular usage? > Waste water retention basins are a supplementary situation like we could > find dozens of them. > Where will this end? > > All discussed features share the "water body" concept (or more generic > fluid-body with substance=water) inside very different structures with even > different purposes. > Why don't we look to describe a generic water body, with a volume, > elevation and usage prior to list every single feature that stores/retain > water? > > This said, it's fine to have many different tags to describe very > different structures (building=*, man_made=*, natural=*...) > As such structures tagging should be separated from the water body they > contain, an uniformed semantic for water bodies would make OSM a yet cooler > place than it already is > > All the best > > François > > > Le jeu. 17 déc. 2020 à 18:46, Brian M. Sperlongano <zelonew...@gmail.com> > a écrit : > >> I knew them as sewage treatment ponds, but apparently there's a name for >> them: >> >> https://en.m.wikipedia.org/wiki/Waste_stabilization_pond >> >> I feel like this a separate class of object that deserves its own tag, >> either within or separate from natural=water, or perhaps even subclassed as >> water=basin+basin=waste? >> >> On Thu, Dec 17, 2020, 12:24 PM Joseph Eisenberg < >> joseph.eisenb...@gmail.com> wrote: >> >>> How should sewage treatment facilities be tagged, then? >>> >>> Isn't sewage 99% water? >>> >>> I think that most sewage treatment facilities in the USA include open >>> settling basins and I would use landuse=basin or water=basin + >>> natural=water for these: https://www.openstreetmap.org/way/420075503 >>> >>> -- Joseph Eisenberg >>> >>> On Thu, Dec 17, 2020 at 1:55 AM Mateusz Konieczny via Tagging < >>> tagging@openstreetmap.org> wrote: >>> >>>> >>>> >>>> >>>> Dec 17, 2020, 08:02 by dieterdre...@gmail.com: >>>> >>>> >>>> >>>> sent from a phone >>>> >>>> On 16. Dec 2020, at 17:52, Joseph Eisenberg <joseph.eisenb...@gmail.com> >>>> wrote: >>>> >>>> You still have to distinguish marine water (outside of the >>>> natural=coastline) from inland waters, and distinguishing rivers from lakes >>>> is very important for proper rendering of many maps. >>>> >>>> >>>> >>>> and it seems landuse=reservoir is used for sewage as well: >>>> https://taginfo.openstreetmap.org/tags/reservoir_type=sewage >>>> >>>> is this appropriate for natural=water? >>>> >>>> No. >>>> >>>> _______________________________________________ >>>> Tagging mailing list >>>> Tagging@openstreetmap.org >>>> https://lists.openstreetmap.org/listinfo/tagging >>>> >>> _______________________________________________ >>> Tagging mailing list >>> Tagging@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/tagging >>> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/tagging >> > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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