[Tagging] Waterway equivalent of noexit=yes?

Alan Mackie aamackie at gmail.com
Mon Jul 20 19:31:41 UTC 2020

On Mon, 20 Jul 2020 at 11:28, Paul Allen <pla16021 at gmail.com> wrote:

> On Mon, 20 Jul 2020 at 10:59, Volker Schmidt <voschix at gmail.com> wrote:
>> manhole=drain is widely used in OSM for water drainage grids, that are
>> not suitable for people to entr - se the photo on the wikipage
>> <https://wiki.openstreetmap.org/wiki/Tag:manhole%3Ddrain>
> People have used manhole=drain for that purpose and the wikipage
> for manhole=drain documents that use.  However, that photo appears
> to be of a UK storm drain which is not a manhole by my definition
> (too small for entry by a person) or by the wiki's definition for
> Key:manhole which states "Hole with a cover that allows access to
> an underground service location, just large enough for a human to climb
> through."
> In my opinion we should deprecate manhole=drain except where
> it really is large enough for access by a person.  We need a
> better tag.  Well, two tags.  One for storm drains and one
> for sinks that are too small to merit natural=sinkhole with
> any of the current sinkhole=* types.  Oh, and a tag for
> spreads, too.
> --
> Paul

I think we also need one for "entrances" to pipes/tunnels of unknown extent
where the entrance is by horizontal movement of the water rather than by
falling into a hole. The presence/absence of gratings or mesh may be useful
for these too.
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