[talk-au] import of state borders?

Ian Sergeant inas66+osm at gmail.com
Thu Aug 30 00:47:52 BST 2012


It looks like we've finished the NSW/Victoria border.  There are
probably a couple of bits I'll go back to and touch up, but otherwise
looking good.

So, what's next to complete the national/state borders?

Ian.

On 27 August 2012 18:10, Michael Krämer <ohrosm at gmail.com> wrote:
> 2012/8/27 Ian Sergeant <inas66+osm at gmail.com>
>>
>> The first real divergence I've come across is here, where the ABS
>> border follows the northern anabranch, but it seems clear from AGRI
>> that the southern watercourse is now the one with the most flow.   I'd
>> like to declare this land as part of NSW.
>>
>>
>> http://agri.openstreetmap.org/?zoom=16&lat=-36.0233&lon=146.67105&layers=B00
>
>
> Sounds reasonable to me.
>
> In fact I also came across the first cut-offs over the weekend, an example
> is [1]. But I found it rather difficult to decide for one state or the
> other. According to [2] (page 2) the border does not necessarily change if
> the river does: "The creation of a new channel after 1850 by sudden avulsion
> will not alter the location of the state border. [...] The rule of gradual
> and imperceptible erosion and accretion will apply." So I let Victoria win
> there, even though I don't have any data from 1850 available....
>
> Best regards,
> Michael
> ----------
> [1]
> http://agri.openstreetmap.org/?zoom=15&lat=-34.66479&lon=142.50166&layers=B00
> [2]
> http://www.dse.vic.gov.au/__data/assets/pdf_file/0004/104377/NSW-VIC_Border_Determination.pdf



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