Swimming in this beautiful and very swimmable and safe lake is limited to a kiddie area - useless if you're looking for exercise.  Count on a ranger yelling if you go elsewhere despite the absence of "no-swimming" signs.  (Lots of signs about not feeding the wildlife).  Tennessee state parks, for example, allow swimming in huge lakes swamped with jet-skis and speed boats.  Lake Norris, Harrison Bay…  What's wrong with "swim at your own risk?"   No cellular signal which can be a plus.  Old fashioned pay phone available for the generation that knows how to operate those.