Places for dogs to swim

I’m wondering if anyone knows of any streams, creeks or lake areas I can take my dog to swim? I recently discovered he’s obsessed with running and playing in water but I don’t know where I can legally take him. I found out he loved water when I took him walking at the trail in Mt Juliet at Charlie Daniel’s and he took off full zoomies in the creek. I don’t know if I’m allowed to let him swim there but I didn’t see any signs posted saying no swimming. I live in lebanon but wouldn’t mind driving out further for him to have fun.