[Tagging] Evaporation ponds
joseph.eisenberg at gmail.com
Thu Jan 14 06:04:15 UTC 2021
I like basin=evaporation - it certainly seems to fit in with
basin=retention/detention/infiltration, as long as we clarify that
landuse=salt_pond is already the "de facto" tag for sea salt evaporation
ponds (aka salt pans, salterns), since these have a rather different
-- Joseph Eisenberg
On Wed, Jan 13, 2021 at 9:27 PM Brian M. Sperlongano <zelonewolf at gmail.com>
> I have been investigating the objects that are currently tagged
> reservoir_type=evaporator to understand how those features fit in our
> emerging definition of "reservoir". This is a small category at present
> (442 objects), and they seems to fit into the following categories:
> 1. Possible tailings ponds mis-tagged as evaporation reservoirs
> 2. Industrial ponds associated with chemical production (potash is a
> common example)
> 3. Basins associated with water purification
> 4. Man-made rectangular/polygonal bodies of water with unclear usage
> I've compiled a list of examples for inspection.
> Presumably, the purpose of an evaporator pond/basin is to evaporate water
> from a solution, leaving behind a precipitate which is harvested. The most
> obvious usage is a salt pond, which already has its own dedicated tag in
> The question is two-fold:
> 1. Would we consider any of these features to be "reservoirs"?
> 2. If evaporation ponds are NOT reservoirs, how should they be tagged?
> It seems that we need new tags. The options that come to mind are
> basin=evaporation (combined with either landuse=basin or
> natural=water+water=basin). Note that the "landuse=basin" version is quite
> reasonable here if there is a wet->dry->harvest cycle.
> The other option is new tagging under the man_made=* key, similar to what
> we did with the tailings ponds proposal.
> If new tagging is created for evaporator, I would suggest also that the
> key resource=* be used to tag the specific precipitate that the evaporation
> pond is being used to extract.
>  https://wiki.openstreetmap.org/wiki/Proposed_features/Reservoir
>  https://wiki.openstreetmap.org/wiki/Proposed_features/Tailings_pond
> Tagging mailing list
> Tagging at openstreetmap.org
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