Summertime and the Ohio River 1970s

This photo reminds me of a childhood memory. My b estfriend's mother took us down to the fireworks/riverfest. It might have been the first year WEBN did that. I was either a preteen or early teen. We saw hippy types swimming in the river and jumping off the ice-breakers, We begged to do this but were only allowed to go in right by the serpentine wall and climb right back out. We also saw the same type of people climbing to the top of very high light poles. I think the next year they started greasing them.