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<div class="moz-cite-prefix">On 12/2/23 02:23, Tod Fitch wrote:<br>
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cite="mid:5514B870-9886-49AA-BB93-B0A72E6DD6BC@fitchfamily.org">
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In the deserts of the southwest United States there are features
that could probably use similar help in tagging. In California
they usually have “Dry Lake” in the name (assuming they are
named). At least one in Arizona has “Playa” (Spanish for beach or
shallow) in its name. From your description, they may get water
more often than the “dry swamps” you write about but the tagging
is similarly unclear.
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<div class="">At present the Wilcox Playa in Arizona is tagged
with:
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<div class="">intermittent=yes</div>
<div class="">name=Willcox Playa</div>
<div class="">natural=water</div>
<div class="">note=This area is dry, not water or wetland.</div>
<div class="">type=multipolygon</div>
<div class="">wikidata=Q8003532</div>
<div class="">wikipedia=en:Willcox Playa</div>
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<div class="">While a California example is tagged with:</div>
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<div class="">name=Soda Dry Lake</div>
<div class="">natural=mud</div>
<div class="">wikidata=Q81309</div>
<div class="">wikipedia=en:Soda Lake (San Bernardino County)</div>
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<div class="">This could be an interesting discussion and
maybe we can arrive at tagging that works outside of
Australia as well as accurately describe your dry swamps.</div>
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<p>Australia too has 'dry lakes' the most famous is Lake Eyre,
Relation: Kati Thanda-Lake Eyre (North) (253952)
<a class="moz-txt-link-freetext" href="https://www.openstreetmap.org/relation/253952#map=8/-28.343/137.592">https://www.openstreetmap.org/relation/253952#map=8/-28.343/137.592</a></p>
<p>I'd not describe it as a dry swamp as it lacks plant life due to
the salt that is present when dry and the depth of water when wet.
I describe it as a 'salt lake' and there are many of them in
Australia. Presently tagged <br>
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<p>alt_name = Lake Eyre (North)<br>
ele = -15<br>
intermittent = yes<br>
name = Kati Thanda-Lake Eyre (North)<br>
name:de = Eyresee<br>
name:hu = Eyre-tó<br>
natural = water<br>
old_name = Kati Thanda<br>
salt = yes<br>
water = lake<br>
wikidata = Q179970<br>
wikipedia = en:Lake Eyre<br>
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<p>I think I'd add the tag surface=salt just to drive home the
point. <br>
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<p> I think a 'swamp' (wet or dry) should have plant life. <br>
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<p>Another Australian link
<a class="moz-txt-link-freetext" href="https://wetlandinfo.des.qld.gov.au/resources/static/pdf/resources/fact-sheets/profiles/new-profiles/29113-05-arid-swamps-web.pdf">https://wetlandinfo.des.qld.gov.au/resources/static/pdf/resources/fact-sheets/profiles/new-profiles/29113-05-arid-swamps-web.pdf</a></p>
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cite="mid:5514B870-9886-49AA-BB93-B0A72E6DD6BC@fitchfamily.org">
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<div class="">On Feb 11, 2023, at 2:07 AM, Warin <<a
href="mailto:61sundowner@gmail.com"
class="moz-txt-link-freetext" moz-do-not-send="true">61sundowner@gmail.com</a>>
wrote:</div>
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<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">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.<span class="Apple-converted-space"> </span></p>
<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">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.<span
class="Apple-converted-space"> </span></p>
<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">See<span
class="Apple-converted-space"> </span><a
href="https://theconversation.com/why-a-wetland-might-not-be-wet-103687"
class="moz-txt-link-freetext" style="color: rgb(0,
0, 128); text-decoration: underline;"
moz-do-not-send="true">https://theconversation.com/why-a-wetland-might-not-be-wet-103687</a><span
class="Apple-converted-space"> </span>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’???<span
class="Apple-converted-space"> </span></p>
<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">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… <span
class="Apple-converted-space"> </span><br class="">
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background-color: transparent;" class=""><br class="">
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<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">There are
more in existence but not mapped.<span
class="Apple-converted-space"> </span></p>
<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">Sample<span
class="Apple-converted-space"> </span><a
href="https://www.openstreetmap.org/way/1143825454"
style="color: rgb(0, 0, 128); text-decoration:
underline;" class="" moz-do-not-send="true">https://www.openstreetmap.org/way/</a><a
href="https://www.openstreetmap.org/way/1143851993"
style="color: rgb(0, 0, 128); text-decoration:
underline;" class="" moz-do-not-send="true">1143851993</a></p>
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background-color: transparent;" class=""><br class="">
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<p style="margin-bottom: 0cm; line-height: 14px;
background-color: transparent;" class="">Any thoughts?<span
class="Apple-converted-space"> </span></p>
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