[Talk-GB] GB Coastline - PGS vs OS

[Malcolm Herring]

On 12/12/2016 09:42, Stuart Reynolds wrote:
> sand is shown all the way out to the end of the pier

A practical solution to tidal beach areas is to map them as two areas 
with a common bound, that being the MHW nominal coastline. The areas 
above MHW can optionally carry the tag "tidal=no", but the areas below 
MHW should carry the tag "tidal=yes" and extend down to MLW(or MLWS or 
LAT). This is important for coastal walkers, who need to know what parts 
of an inviting beach may not be there on their return!