Some of them can also be designed to be pressurised while canals are all open flow waterways. Then waterway=pressurised applies for pipes or tunnels where water flows with no air.
I doubt a lot about mandatory navigability of canals. What about waterways intended to feed mills or fountains ? François Le ven. 11 janv. 2019 à 22:09, ael <law_ence....@ntlworld.com> a écrit : > On Fri, Jan 11, 2019 at 11:03:29AM -0800, Tod Fitch wrote: > > Most of what I’d call a drain around here would be large underground > pipes designed to carry storm water. Empty most of the time except perhaps > for a trickle of water from various urban/suburban watering overflow. Used > most of the time by raccoons, possums and rats as away to navigate through > or shelter in an area without having to worry about being attacked by > neighborhood dogs, though the larger ones could be attractive for > adventuresome teenage boys to explore. > > Same in UK: I forgot to mention them. The pipes serving domestic houses > and draining water from roads are all "drains", and by extension also > for the entrance grills in roads and the like. That includes sewers as > well. But I guess few of them would be mapped in OSM unless particularly > large or significant. Back to the point: it would be unnatural to tag > them as canals! Some might overlap with culverts? > > ael > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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