These maps have been done with a lot of precision and it took almost one
year to make them! Just remember, it's lake diving and you should be
qualified for such a kind of diving, Average temperature 4 degrees celsius,
visibility from 0 meter to 40 meter (winter is the best season). Ask a
qualified local dive center if you are not sure and they will guide you. If
you need any info you can drop me an email at waterworld at romandie dot com
or visit my website www.divewaterworld.com Enjoy your dives!
Tom Steiner van den Ouweelen