[Talk-us] [Talk-ca] USGS Orthos in Canada

Richard Weait richard at weait.com
Thu Aug 9 22:39:34 BST 2012

We should be asking about this on talk-us.  cc'd there.

On Thu, Aug 9, 2012 at 8:17 AM, Stewart C. Russell <scruss at gmail.com> wrote:
> While editing near Leamington ON in Potlatch, I clicked by accident on
> the Background -> "OSM US USGS Large Scale Aerial Imagery". It came up
> with really sharp and recent orthoimagery. It's of similar quality to
> the SWOOP images I buy at $50/km^2 for work, and covers some areas that
> Bing doesn't. Images look to be from 2010 or so, guessing from the
> visible wind power projects in SW Ontario.
> Trying out several areas near the US border I found:
> * that coverage is seemingly random; some isolated areas have it,
> contiguous areas near the border might not
> * it's coming from a very slow server which only works if you're zoomed
> in very close
> * it's not seemingly available from a public WMS, as any of the USGS
> servers I tried blank at the Canadian border.
> Surprisingly, it seems that not all USGS imagery is public domain
> (https://wiki.openstreetmap.org/wiki/USGS_High_Resolution_Orthoimagery#Data_License).
> So, can we use it?
> cheers,
>  Stewart
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