[Tagging] Tagging sewage treatment basins

Thu Dec 17 19:12:37 UTC 2020

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.infosreseaux at 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 <zelonewolf at 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.eisenberg at 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 at openstreetmap.org> wrote:
>>>
>>>>
>>>>
>>>>
>>>> Dec 17, 2020, 08:02 by dieterdreist at gmail.com:
>>>>
>>>>
>>>>
>>>> sent from a phone
>>>>
>>>> On 16. Dec 2020, at 17:52, Joseph Eisenberg <joseph.eisenberg at 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.
>>>>
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