[Tagging] Waterway direction

[Anthony]

On Tue, Aug 31, 2010 at 4:35 AM, Nathan Edgars II <neroute2 at gmail.com> wrote:
> Perhaps you can explain how I or anyone else will determine the
> direction of this waterway: http://www.openstreetmap.org/?way=73765043

http://www.daftlogic.com/sandbox-google-maps-find-altitude.htm ?

> I don't know of any other feature where the direction of the way means
> something *without* another tag being added.

natural=cliff, barrier=retaining wall