[Tagging] Feature Proposal - RFC - Tailing ponds

stevea steveaOSM at softworkers.com
Sun Jan 10 02:57:59 UTC 2021

On Jan 9, 2021, at 6:48 PM, Joseph Eisenberg <joseph.eisenberg at gmail.com> wrote:
> This doesn't work well, because landuse=industrial is for a whole industrial area, which might include several tailings ponds and other mining facilities, while a tailings pond is a specific, physical feature which you can delineate by looking at aerial imagery (or visiting and walking around it in person). 
> We should have a tag for the physical feature.
> While I understand that you dislike the use of natural=water or other water-related tags for these ponds, I suspect that they are over 90% water. Consider that sea water is only 96.5% H2O on average, and some natural salt lakes are over 30% salts: these are mapped as natural=water + water=lake + salt=yes - https://en.wikipedia.org/wiki/Hypersaline_lake

I'm of similar mind with Joseph that landuse=industrial isn't ideal here but rather is something I would characterize as applicable to the whole area, like the areas surrounding BOTH a mine (tagged landuse=quarry) and its tailing ponds (however tagged, but not exclusively with landuse=industrial).

I'm of similar mind with Joseph that these are "largely water" and it isn't wrong to say so, although the tag natural=water is jarring, as tailing ponds are anything but natural.  Possibly another tag that has "water" in it as a key or value?  (Please, not natural).

Again, do we now take this discussion (as requested) to the https://wiki.openstreetmap.org/wiki/Talk:Proposed_features/Tailing_pond ?  Seems appropriate, rather than extending this thread in this list.


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