[Tagging] Non Proposed Features

John F. Eldredge john at jfeldredge.com
Tue Aug 31 03:10:11 BST 2010

I would expect that case (c) would still have the water flowing downhill.  Even if you have a series of pumps, water in the sections between the pumps will still flow downhill, not uphill.  About the only time I would expect any counterflow would be if water were to be added to a given section rapidly enough that its surface level was temporarily higher than in the upstream section, making that a downhill flow also.

-------Original Email-------
Subject :Re: [Tagging] Non Proposed Features
From  :mailto:neroute2 at gmail.com
Date  :Mon Aug 30 20:44:53 America/Chicago 2010

On Mon, Aug 30, 2010 at 5:11 PM, Cartinus <cartinus at xs4all.nl> wrote:
> On Monday 30 August 2010 19:19:21 Nathan Edgars II wrote:
>> How else would you tag water flow?
> Somewhere, probably lost in the depths of time, it was agreed that waterflow
> is modeled by the direction of the waterway way without a oneway tag.
> Oops it's not lost. It's on the waterway=river and waterway=stream wiki pages.

So how do you specify that (a) you mapped a waterway but don't know
the direction of flow, (b) it's a stagnant channel with no real flow,
or (c) it's an artificial drainage canal with flow changing based on
rainfall and opening or closing of gates?

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John F. Eldredge -- john at jfeldredge.com
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria

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