[talk-au] Lakes around Mungo National Park

[Warin]

On 22/2/22 09:20, Graeme Fitzpatrick wrote:
>
>
>
> On Mon, 21 Feb 2022 at 17:30, Warin <61sundowner at gmail.com> wrote:
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>     DCS Topo Legend
>     https://raw.githubusercontent.com/mholling/nswtopo-legends/master/nsw.png
>
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> Personally, I think the dry-lake proposal has a lot going for it - 
> maybe we should just start using it? A comment on it's talk page also 
> suggested natural=salt_pan, which isn't bad either.
>
> I also notice on the Topo index that they show both wet & dry swamps - 
> dry swamp may also be an option


Except the Topo map does not map as a wet land/ swamp...

To me a lake would have to have some depth of water in it, not just 
soggy soil .. so I against 'lake' if it never has a water surface now, 
even though they were lakes in the distant path.

Satellite imagery is not consistent across the 'lake' area .. would end 
up being a matrix of surface types.


"A playa is a dry, vegetation-free, flat area at the lowest part of an 
undrained desert basin. It is a location where ephemeral lakes form 
during wet periods, and is underlain by stratified clay, silt, and sand, 
and commonly, soluble salts."


So it is not a playa as defined above by the US Geo Science people...

A 'dry_lake' as defined on the osm wiki "An area of flat, dried-up land 
that is almost always dry, but rarely fills with water creating a very 
shallow lake."


Humm well it does not define 'rare' so I suppose it is as close as were 
are going to get.


As a square peg for a place of round holes  :P

natural/landform=dry_lake -3 uses of this in OSM .. so it will not render.

was:water=lake

name=Lake Mungo


As a matrix of surface types then a multipolugon with each surface type 
as a member ...




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