The Surface Hydrology Lines covering all of Australia from GeoScience Aust is available for use in osm and has a perenniality column On 26 May 2023, at 2:57 pm, Tom Brennan <webs...@ozultimate.com> wrote:
DCS Base and Topo don't distinguish between perennial and non-perennialThat information is available in the NSW Water Theme data eg:https://portal.spatial.nsw.gov.au/portal/home/item.html?id=7b0e959effd749c788d304a4179abf8aThat 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).Though I'd be a bit dubious about some of the things that are classified perennial vs non-perennial. It looks algorithmic, and not entirely internally consistent! Pretty sure I could write a better algorithm.cheersTom----Canyoning? try http://ozultimate.com/canyoningBushwalking? try http://bushwalkingnsw.comOn 26/05/2023 7:56 am, Graeme Fitzpatrick wrote:On Thu, 25 May 2023 at 22:26, Tom Brennan <webs...@ozultimate.com <mailto:webs...@ozultimate.com>> wrote:
I'm looking at adding missing stream data in national parks around
Sydney.
However, how much value is there in bringing in all of the stream data
in say the DCS Base Map vs just the named streams?
I can see for example, the value in bringing in named streams. But
there
are huge numbers of smaller (unnamed) streams.
It's not a bad idea, as it would let anybody needing water in the bush, know that there's a creek over there, & also let you know that if you go this way, you may get wet feet! :-)
But, do DCS Base & Topo differentiate between permanent & intermittent creeks?
Thanks
Graeme
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