Back in the U.S., summer means people heading out to swimming beaches on lakes, rivers, and reservoirs. But all my searches for something similar tend to only turn up public pools and bads, which are very nice, but not the same. I came up with a list of lakes for swimming in the Black Forest, but no detailed information on the location of swimming beaches.
I know Konstanz on the Bodensee has beaches, but that's quite a schlep for a day trip from Stuttgart. I'm hoping the knowledgeable people here on Toytown will have some recommendations for either public or 'unofficial' swimming areas that aren't swimming pools. Good directions and info appreciated if such spots exist.