 Crews performed life-saving measures on a 15-year-old boy who was later pronounced dead at a hospital, the sheriff's office said. A third person, another teen boy, survived and was medically evaluated at the scene before being released. The deaths come more than a month after a 52-year-old woman drowned at the confluence of the American River. Placer County officials warned that rapids around the confluence can be, quote, "'deceiving and dangerous,' unquote, with rapids around the confluence having the potential to lead swimmers into rocks and sweep them downstream."