[Talk-us] US National Hydrography Dataset

[Matthew Perry]

On Jan 28, 2008 12:17 PM, Dave Hansen <dave at sr71.net> wrote:
> On Mon, 2008-01-28 at 12:11 -0800, Matthew Perry wrote:
> > For my corner of the world (southern california, santa barbara) the
> > data is pretty darn good: http://perrygeo.net/tmp/nhd.osm.tar.gz
>
> Yep.  It looks quite good.  One thing you probably want to be careful
> about is overlapping ways.  For instance, way_ids 27714581 and 27719337
> appear over each other.  Is that intentional?
>
> You might also want to look into updating the JOSM validator to stop
> throwing "overlapping ways" errors on things when areas like 27713919
> and 27713929 share a bunch of segments because they have a common
> border.
>

These two closed ways do share a common border but, in this case, they
should just be one lake. The validator will help find these cases so
I'll keep it this way for now. Thanks for the heads up.

-- 
Matthew T. Perry
http://www.perrygeo.net

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