[Tagging] dry swamps

[Warin]

The ‘dry swamp’ has no apparent way to tag it. These will not be found 
in Europe, just as you don’t find deserts there.

They have occasional water, not seasonal, not yearly but, say, between 5 
to 20 years they have water. As such they do not satisfy the OSM swamp 
definitions at all.

See https://theconversation.com/why-a-wetland-might-not-be-wet-103687 
for more on their characteristics, at least in Australia. OSM has access 
to a imagery source in Australia that maps them, so OSM has a legal 
source for them. What is needed is a tag for them, say, 
‘natural=dry_swamp’???

There are ~ 4,000 of these ‘natural=mud’ mapped so far that are in fact 
‘dry swamps’. Note that the tag natural=mud  wiki says “This tag should 
not be used for areas with intermittent water cover which are water 
covered or completely dry most of the time.” So this tagging is 
incorrect as they are dry most of the time…


There are more in existence but not mapped.

Sample https://www.openstreetmap.org/way/ 
<https://www.openstreetmap.org/way/1143825454>1143851993 
<https://www.openstreetmap.org/way/1143851993>


Any thoughts?
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