Hi,
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.
Regards,
Kim
On 26/5/23 13:54, Josh Marshall wrote:
I map streams on the regular. Given most of what I map is bike +
running single-track, streams are helpful as a clue to the local
topography.
But I’ve also made relations for all of our local streams and creeks;
go to the Newcastle area and search for Ironbark or Cottage Creek for
instance… it used to just return a single hit on one small section for
almost every creek. My interest here is because much of the area was
uninhabitable swamp until there was a huge effort to put in some
monster drains in the 1890s. And yet it will still occasionally flood
and people complain about council not doing anyway…
Do note, the DCS map can be quite wrong in places… I’m pretty sure a
lot of it was done once and then never updated.
Arguably most streams in Australia are intermittent, I don’t think the
definition is totally locked down, but when they are isolated sections
of standing water in between rain, that is intermittent in my mind.
On 26 May 2023, at 8:00 am, Graeme Fitzpatrick
<graemefi...@gmail.com> wrote:
On Thu, 25 May 2023 at 22:26, Tom Brennan <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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