[talk-au] Putting streams into OSM

[Josh Marshall]

OMG... I am drooling looking at what you've done here. Just switched the
0212 in your overpass query for 0210 (Hunter River) and zoomed into the
Newcastle region... and voilá: https://overpass-turbo.eu/s/1vuY

Was this the changeset that did your GA import for my area:
https://www.openstreetmap.org/changeset/102326974 ? I think all my changes
since then have been building on that. My context here: I like random
exploration, and a someday goal is paddleboarding the local catchment.
(I've already run or ridden a fair bit of it, watercraft required now...)

Back to my overpass link: The blue now tells me which ways are missing a
relation... I don't think I need to do one for every stream, but there's a
few major ones I've missed. And this raises some questions for me...

Where do things sit with putting tags on the relation vs on the individual
ways? Intermittent= and waterway= obviously change from way to way and so
go on them, but name, destination, wikidata, etc? Feels like that should be
all on the relation, but renderers may not use that? (Asking pragmatically,
I'm well-aware of not mapping for rendering. But it does annoy me when you
search for some feature that is obviously part of a greater whole, and
there's no indication from a returned way that such is the case.)

Thanks.


On Sat, 27 May 2023 at 11:53, Andrew Davidson <theswavu at gmail.com> 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)
>
>
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