Re: [talk-au] Putting streams into OSM
My main area of interest from a stream point of view is the Hawkesbury Catchment, outside the Sydney suburban boundaries. I haven't been involved in any imports so you'll have to excuse my ignorance. Could the dataset be split into say urban/non-urban and the non-urban parts imported? Or do partial imports just create more work? What sort of sanity checks need to be carried out? cheers Tom Canyoning? try http://ozultimate.com/canyoning Bushwalking? try http://bushwalkingnsw.com On 27/05/2023 11:49 am, Andrew Davidson wrote: On 27/5/23 08:39, nwastra nwastra wrote: I should add that I have only used the Surface Hydrology Lines from GeoScience Aust dataset for Qld catchments and as the data is drawn for many different sources across the country the perenniality may be not always be included. I admit I've been too lazy to publish the stuff I'd already done with the GA dataset. Rather than making people do it all again I've finally got round to putting it on GitHub https://github.com/FrakGart/ga_streams I have already imported in the named streams in NSW except for the area around Sydney. Mostly, again, due to laziness. As already pointed out the data all needs to be sanity checked against what's on the ground and that's really hard when it's under a city. The data is organised by AWRC catchment, so for Sydney you are looking at: https://github.com/FrakGart/ga_streams/blob/main/Basin_II/II12.osm.gz which is the Hawkesbury River and https://github.com/FrakGart/ga_streams/blob/main/Basin_II/II13.osm.gz which is Sydney Coast-Georges River You can use overpass turbo to see what is already mapped: https://overpass-turbo.eu/s/1vpu (Hawkesbury River) https://overpass-turbo.eu/s/1vpv (Sydney Coast-Georges River) ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Putting streams into OSM
I hadn't seen that page until Andrew Davidson mentioned it earlier in the thread. But the NSW Water Theme data falls under the DCS Foundational Spatial Data, which is listed as having a waiver, and thus usable... [And I probably should have been more specific with the wording - I knew that CC BY 4 is not generally usable by itself. But was aware that many datasets for NSW have waivers!] cheers Tom Canyoning? try http://ozultimate.com/canyoning Bushwalking? try http://bushwalkingnsw.com On 27/05/2023 5:06 pm, Warin wrote: On 26/5/23 14:51, Tom Brennan wrote: DCS Base and Topo don't distinguish between perennial and non-perennial That information is available in the NSW Water Theme data eg: https://portal.spatial.nsw.gov.au/portal/home/item.html?id=7b0e959effd749c788d304a4179abf8a That data is licensed under CC BY 4, which I think we have permission to use. (I haven't used it, but if allowed, it would make sense rather than tracing individual lines). CC by 4 by it self is not usable for OSM... With an OSM waiver .. it is usable. If the data set to be used is listed as having a waiver here https://wiki.openstreetmap.org/wiki/Australian_Data_Sources#New_South_Wales, then it is usable. (Doting i's and crossing t's so others won't be mislead.) ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Putting streams into OSM
On Fri, 26 May 2023 at 08:42, Tom Brennan wrote: > what's the reason for using relations? Or > is it specifically for the search that you mentioned? A relation can also be linked 1:1 with an item for the waterway in Wikidata, and with the wider web of linked data. -- Andy Mabbett @pigsonthewing http://pigsonthewing.org.uk ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Putting streams into OSM
On 27/5/23 16:48, Graeme Fitzpatrick wrote: On Sat, 27 May 2023 at 16:34, Tom Brennan wrote: But while useful, the question is really whether a full stream import is worthwhile. I would say yes (if it's not too much effort required to do so?) Thanks Graeme I too would 'like' the data. ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Putting streams into OSM
On 26/5/23 14:51, Tom Brennan wrote: DCS Base and Topo don't distinguish between perennial and non-perennial That information is available in the NSW Water Theme data eg: https://portal.spatial.nsw.gov.au/portal/home/item.html?id=7b0e959effd749c788d304a4179abf8a That data is licensed under CC BY 4, which I think we have permission to use. (I haven't used it, but if allowed, it would make sense rather than tracing individual lines). CC by 4 by it self is not usable for OSM... With an OSM waiver .. it is usable. If the data set to be used is listed as having a waiver here https://wiki.openstreetmap.org/wiki/Australian_Data_Sources#New_South_Wales, then it is usable. (Doting i's and crossing t's so others won't be mislead.) ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Putting streams into OSM
On Sat, 27 May 2023 at 16:34, Tom Brennan wrote: > > But while useful, the question is really whether a full stream import is > worthwhile. > I would say yes (if it's not too much effort required to do so?) Thanks Graeme ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Putting streams into OSM
On 26/05/2023 2:10 pm, Kim Oldfield via Talk-au wrote: > I also find streams useful to indicate the surrounding ground is > downhill towards them. Being at the bottom of a valley it is also > fairly obvious when you encounter one in person. > > They are often hard to map from aerial imagery as they may hidden by > tree cover. This is one reason why many are missing from OSM. Adding > more of them would be good. In NSW at least, there are options to map from other than aerial imagery (various DCS sources). There's also the option to generate them from the DEM, which in my experience is more accurate 95%+ of the time. But while useful, the question is really whether a full stream import is worthwhile. cheers Tom Canyoning? try http://ozultimate.com/canyoning Bushwalking? try http://bushwalkingnsw.com ___ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
