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<div class="moz-cite-prefix">On 25/06/19 10:47, Ian Sergeant wrote:<br>
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<div>I'm with Andrew on this one. It sounds like your research
is likely superior to any other recent survey done in the
area, and we're not wikipedia here - we value ground truth /
original research and it would be a shame it it couldn't be
mirrored in the map.</div>
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<div>Personally, I'd change it to</div>
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<div>waterway=no</div>
<div>note="blah"</div>
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<div>because otherwise an armchair mapper will put it back (and
I would too, guilty as charged). It's ugly and non-standard,
but I'd do it anyway.</div>
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+1<br>
I'd use life cycle tagging <br>
<br>
abandoned/disused/whatever<br>
<br>
disused:waterway=river<br>
note=While present on map, it is not present on the ground - even as
an old river bed? <br>
<br>
I too would be re entering it from the LPI data ... guilty and in
error. Really needs something in OSM to say it is not here. If it
floods then there may be a 'river' .. a seldom seen event? <br>
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<div>Ian.</div>
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<div dir="ltr" class="gmail_attr">On Mon, 24 Jun 2019 at
22:52, Andrew Harvey <<a
href="mailto:andrew.harvey4@gmail.com"
moz-do-not-send="true">andrew.harvey4@gmail.com</a>>
wrote:<br>
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<div dir="ltr">I think you've done a top job detailing the
situation, so I'd go with your findings from on the
ground.
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<div>We're not here to simply mirror the NSW LPI Base Map,
so I wouldn't worry too much about what it says.</div>
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<div dir="ltr" class="gmail_attr">On Mon, 24 Jun 2019 at
18:25, cleary <<a href="mailto:osm@97k.com"
target="_blank" moz-do-not-send="true">osm@97k.com</a>>
wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">In the past, I added
some parts of the Gwydir River to the map using the NSW
LPI Base Map because I could not see a clear waterway on
satellite imagery. Since then, I have visited the area
twice and cannot actually find a river where it is shown
on the map. Much of the "river" is in private property
but public roads cross waterways at various locations.
<br>
<br>
The western end of the Gwydir River seems not to exist
except on the NSW LPI Base Map and maps which have used
it as a source (including OSM).<br>
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As far as I can ascertain, the river used to dissipate
into wetlands and, if there was enough water, the
seepage from the wetlands re-formed into waterways.
However intensive irrigation has resulted in such low
water flow that the wetlands are largely dust and water
seems never to flow beyond them (except perhaps in major
flood events which are relatively rare). Water from the
eastern Gwydir may flow west to the Barwon River via
Carole Creek into Gil Gil Creek, via the Gingham
Watercourse and via the Mehi River. But the so-called
Gwydir River, west of the wetlands, does not appear to
exist except on the LPI Map. And part that of the
waterway that does exist is signposted by the Moree
Plains Shire Council with a different name (Big Leather
Watercourse) at the two places where it crosses public
roads. GNB uses this name for another branch of the
river nearer to Moree but locals, including the local
council, seem to have a different view.<br>
<br>
When visiting the area, I found water to be difficult to
discuss with locals as there are some strong points of
view. Maintaining a river on the map may be a political
imperative for government but is not consistent with
OSM's philosophy of mapping what is actually on the
ground at particular locations.<br>
<br>
After reflection, I think the Gwydir River does not
really exist west of the wetlands and I think it should
be deleted from OSM, even though it is shown on the LPI
Base Map. I propose to delete this section of the river
and follow the local council signposted name for the
more westerly waterway that does actually exist at
Morialta and Watercourse Roads.<br>
<br>
I would appreciate any views on this issue.<br>
<br>
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