On Thu, 15 Aug 2019 at 14:50, Warin <61sundow...@gmail.com> wrote:

> On 15/08/19 14:16, Mateusz Konieczny wrote:
>
> Main problem with such definition is that strip of concrete/asphalt along
> shore
> is not a beach.
>
> I thought about dunes when I claimed that "beach is not
> always unvegetated" but now I see that dunes are not considered as part of
> the beach.
>
> I copied definition from Wikipedia as it seemed far better as it managed to
> exclude stuff like
> https://commons.wikimedia.org/wiki/File:Sea_defences_(21467789266).jpg
>
>
> https://commons.wikimedia.org/wiki/File:Mole_in_Funchal,_Ponta_do_Garajau,_statue_of_Cristo_Rei_and_Desertas_Islands._Madeira,_Portugal.jpg
>
>
> https://commons.wikimedia.org/wiki/File:Concrete_defences_by_the_Saxon_Shore_way_-_geograph.org.uk_-_1240179.jpg
>
> Maybe copying previous definition from natural=beach would be preferable.
>
>
> Don't know .. hence my question here .. any 'beach' 'experts'?
>

Lived beside them all my life so I'll have a go!

I'll agree with Mateusz that concrete & boulders aren't a beach - a couple
of those examples I'd probably call man_made=groyne + natural=rock (& yes,
that's because it then renders as rock!), however you can have (isolated)
boulders on a beach.

What is a beach though is a bit tricky, especially for OSM.

It would usually be "the area above the Low Tide mark" but that then
clashes with OSM Coastline, which is taken as the High Tide mark, so that
would then have to mean that the beach is

"The area between the High Tide mark & any adjoining vegetation /
structures / landforms". It's usually largely unvegetated (but may have
isolated trees, clumps of grass etc), & is made up of natural materials
such as sand, pebbles, shells etc"

How's that sound?

Thanks

Graeme
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