[OSM-talk] Beaches
Tom Chance
tom at acrewoods.net
Thu Sep 13 10:26:45 BST 2007
Ahoy,
On Thursday 13 September 2007 10:04:06 Frederik Ramm wrote:
> I just looked at a 1:250,000 scale OS map and found that they
> usually draw a thin black coastline, and have the yellow(ish) beach
> area on the sea side of that line; sometimes also to both sides of
> that line. (Good examples: North Uist, Dornoch, Holy Island nr.
> Berwick upon Tweed).
>
> Those of you having mapped beaches - how did you do it? If the
> coastline is the "mean high water mark", then a the portion of the
> beach that is nearly always accessible should be inside the
> coastline, and the portion that is only visible at low tide should be
> outside, right?
In Criccieth recently I just had the coastline set at a rough
walking-down-the-beach and going-on-local-knowledge average tidal mark. The
mapped beach starts from that coastline up to where the beach meets main
land. Probably the wrong way to go but I was unsure as well :)
Kind regards,
Tom
--
| Green Party Speaker on Intellectual Property and Free Software |
| http://tom.acrewoods.net :: http://www.greenparty.org.uk |
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