[Tagging] Any support for a flow tag?

[Malcolm Herring]

On 01/04/2011 16:47, john at jfeldredge.com wrote:
> One example of a waterway with reversing flow would be the estuary of a river.  While the tide is rising, the flow in the estuary may slow, come to a standstill, or even temporarily reverse directions (called a tidal bore).
>
> -------Original Email-------
> Subject :Re: [Tagging] Any support for a flow tag?
>  From  :mailto:dieterdreist at gmail.com
> Date  :Fri Apr 01 09:38:31 America/Chicago 2011
>
>
>
Estuaries are generally mapped as coastlines, so river flows are not 
applicable. Tidal flows, being dynamic, cannot have a direction.

Within the river domain, the nominal flow is always towards the sea, 
even if temporarily reversed by incoming tides.

A tidal bore is a wave, not a current. It travels upstream, but the 
river continues to flow downstream.