Hi and I have visited Two Rivers State Recreational Park and got some nude time in there at the far end of the hiking trails on islands in the river. It is not legal and the rangers will ticket you, but if you are discrete you will meet other nudists from the area.
I am going give it a try to do some skinny-dipping and may be sunbathing if appropriate, this Saturday June 30, sometime between 10.00 and 3.00. If anybody would like to join me, shoot me an e-mail. I am going to stay away from rangers and be discrete. It is kind of feels more safe to do with somebody else.