[talk-au] Proposed deletion of part of the Gwydir River

[Michael James]

There are lots of rivers in Australia that do not always have water in them

The correct tag is intermittent=yes

https://wiki.openstreetmap.org/wiki/Key:intermittent

Thanks Michael


> -----Original Message-----
> From: Warin <61sundowner at gmail.com>
> Sent: Monday, 24 June 2019 8:58 PM
> To: talk-au at openstreetmap.org
> Subject: Re: [talk-au] Proposed deletion of part of the Gwydir River
> 
> On 24/06/19 18:19, cleary wrote:
> > 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.
> >
> > 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).
> >
> > 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.
> >
> > 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.
> >
> > 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.
> >
> > I would appreciate any views on this issue.
> 
> If deleted someone will put it back.
> 
> How about using the 'life cycle' tags?
> 
> disused? abandoned? raised? Disused might be a good fit.. thought with climate
> change? abandoned:waterway=river??
> 
> 
> 
> 
> 
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