On 17/2/23 12:13, Matija Nalis wrote:
On Sat, 11 Feb 2023 21:07:22 +1100, Warin <61sundow...@gmail.com> wrote:
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.
I see few options. If it happens more regularly, map as:
- If it happens more regularly, map as: natural=wetland + intermittent=yes
there even exist few cases of "wetland=dry", so you may add that (or
something similar) too.
Yes, I know that "natural=wetland" tag talks about "seasonal", but note the "intermittent=yes" changes the meaning of
the main tag significantly. There are even things which are normally
(without intermittent tag) ALWAYS full of water
(like rivers and lakes), but intermittent=yes changes what they are:
https://wiki.openstreetmap.org/wiki/Key:intermittent
- if they very rarely (if ever) become waterlogged, mark them whatever they are currently (or most of the time).
After all, you wouldn't mark say Fukushima as wetland, because due to its
location and climate it is prone
to tsunami and flood disasters.
So, if there are trees, mark as natural=forest. If grass, landcover=grass. If no vegetation then natural=desert. etc.
Add human readable description=* mentioning the rare floods when it becomes
swamp.
Some deserts have vegetation. And they are still deserts even with
vegetation. Some deserts are not sand, and they are still deserts. It is
not the land cover that make a desert.
Dry/arid/ephemeral swamps are still dry/arid/ephemeral swamps even when
they are dry. It is not the vegetation alone that makes a
dry/arid/ephemeral swamp.
- see what other similar features in the region use, and copy/paste that.
In one part I have previously tagged one of them, thinking it was a rare
thing I used a square peg in a round hole... but 4,000 of them in one
state of Australia, with more of them in other parts of Australia and
yet more in other parts of the world I think that means there should be
suitable tags for them not some stop gap tagging.
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