[Tagging] natural=bay on areas

Andrew Harvey andrew.harvey4 at gmail.com
Mon Mar 27 12:17:29 UTC 2017

> It is a bay of the Tasman Sea/Pacific Ocean.  Ecologically it is a fully
maritime waterbody.

What do you mean by "maritime waterbody"?

If you're in Botany Bay or the other bays there such as
https://www.openstreetmap.org/relation/1333569, you're not at sea or
in the sea, or in the ocean.

If you swim at a coastal beach you're swimming in the sea and the
ocean. At the beaches of Botany Bay, no one would say you're in the
sea or ocean. Nor would they say you're on the coast of Australia.

Botany Bay is unlike many conventional bays which are on the coastline
and part of the sea. You're right that these types of bays are part of
the sea and ocean, and other times they are part of a river, but
botany bay is really a river nor sea, if anything Botany Bay sounds
much more like an Esturary. https://en.wikipedia.org/wiki/Estuary

On 27 March 2017 at 22:46, Christoph Hormann <osm at imagico.de> wrote:
> On Monday 27 March 2017, Andrew Harvey wrote:
>> What water body is Botany Bay
>> https://en.wikipedia.org/wiki/Botany_Bay part of?
>> I don't think it's right too tag the inside of the bay as coastline.
>> "A coastline or a seashore is the area where land meets the sea or
>> ocean" the inside of the bay isn't the sea, hence the water/land
>> boundary isn't the coastline.
> I have had this discussion countless times in other cases and Botany Bay
> is not even a borderline case.
> It is a bay of the Tasman Sea/Pacific Ocean.  Ecologically it is a fully
> maritime waterbody.
> The only alternative would be to consider it the lowest part of the
> Georges River which would be an extreme stretch considering the size of
> the bay and its connection to the sea compared to the discharge of the
> river.
> More elaborate discussion of the matter can be found on the wiki:
> http://wiki.openstreetmap.org/wiki/Proposed_Features/Coastline-River_transit_placement
> As said a bay is not a separate waterbody in OSM so if you consider
> something a bay you need to decide what it is a bay of.  Tagging
> natural=water + water=bay is always factually wrong (and is also only
> used about 80 times globally).
> --
> Christoph Hormann
> http://www.imagico.de/
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