[Tagging] man_made=pipeline - is onewayness implied?

[Martin Koppenhoefer]

> Am 05/lug/2014 um 23:30 schrieb André Pirard <A.Pirard.Papou at gmail.com>:
> 
> Lakes usually flow, and I would guess more than canals that are not     water ducts.
> They're mostly a river meeting a hole, filling it and overflowing at the other end.


lakes don't flow. They have a layering of different temperature/water zones and by definition do not "flow". They often have an inflow and an outflow (not sure if these are the correct English hydrological terms) so there might be a minor flow present, but the lake as such is non-flowing.

This said, there are also other types of non-flowing bodies of surface water.

cheers,
Martin