People gather at the top of a high rock outcropping to jump into the Clackamas River in Gladstone, Ore., June 20, 2024. High Rocks Park is a popular spot for cliff jumping and swimming, but it can be dangerous. The air temperature was 88 degrees, while the water temperature on June 20 was 66 degrees - making this ripe for involuntary gasping. That’s why officials implore recreators to use a simple life-saving device – a life jacket.