[OSM-talk] Beaches at lower zoom levels

[Malcolm Herring]

Steve Bennett wrote:
> Out of curiosity, where do you get this low- and high-tide data from
> anyway? On aerial photos it's pretty hard to see anything except where
> the water happened to be at the time of the photo.
> 

In the UK, OS Street View has the MHW line. You can put this in WMS 
overlay on JOSM & trace it. (Remembering to add a 
"source=OS_Opendata_Streetview" tag