Not sure but i think 9 or 10 pm
Dusk
At dusk
October
You can swim anytime you want
Nightly doesn't, end of season Oct 31
Usually its froze solid by January. You would need to break ice if you wanted to swim then.
We walked down there after 10pm when it was really dark. You could swim if you wanted... nobody there to stop you. Just sayin. ;) We were staying in the campground though
After dusk
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