As further information there is a bathing water directive in the European Union that states that all bathing waters should be mapped. There does not seem to be a id-number. Each bathing water is given a rating (Poor/Good/Excellent). (At least in Sweden, the waters have to be rated as Excellent to qualify for the Blue Flag)
This page is a good start to find out more on EU bathing waters. http://ec.europa.eu/environment/water/water-bathing/report_2012.html -- View this message in context: http://gis.19327.n5.nabble.com/Tagging-Blue-flags-Foundation-for-Environmental-Education-s-Blue-flag-criteria-for-beaches-and-marin-tp5714218p5715351.html Sent from the Tagging mailing list archive at Nabble.com. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging